Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Horticultural Science and Technology
Journal Basic Information
Journal DOI :
Korean Society of Horticultural Science
Editor in Chief :
Volume & Issues
Volume 29, Issue 6 - Dec 2011
Volume 29, Issue 5 - Oct 2011
Volume 29, Issue 4 - Aug 2011
Volume 29, Issue 3 - Jun 2011
Volume 29, Issue 2 - Apr 2011
Volume 29, Issue 1 - Feb 2011
Selecting the target year
Flower Color Modification by Manipulating Flavonoid Biosynthetic Pathway
Lim, Sun-Hyung ; Kim, Jae-Kwang ; Kim, Dong-Hern ; Sohn, Seong-Han ; Lee, Jong-Yeol ; Kim, Young-Mi ; Ha, Sun-Hwa ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 511~522
Flower color is one of the main target traits in the flower breeding. Recently, technological advances in genetic engineering have been successfully reported the flower colors, such as blue roses and blue carnations that are impossible to develop by traditional breeding. Accumulated knowledge-based approaches for flavonoid biosynthesis enabled to introduce novel and unique colors into flowers. These flower color modifications have been made through the regulation of flavonoid metabolic pathway - control of endogenous gene expression and introduction of foreign genes to produce novel and specific flavonoids - and the introduction of transcription factors that are known to regulate sets of genes being involving in the flavonoid biosynthetic pathway. More empirical regulation of the flavonoids metabolism requires the understanding for regulatory mechanism of intrinsic flavonoids depending on the flower crops and the very sophisticated control of flavonoid metabolic flow. In this review, we summarized successful examples of flower color modification. It might be useful to deduce the strategy for the creation of exquisite colors in flower plants.
Changes of Fruit Characteristics by Fruit Load Control in 'Niitaka' and 'Whangkeumbae' Pear Trees on Y-trellis Training System
Kwon, Yong-Hee ; Park, Yo-Sup ; Park, Ji-Eun ; Park, Hee-Seung ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 523~530
This study was carried out to understand the characteristic relations fruit changes caused by adjusting the amount of the fruit load in 'Niitaka' and 'Whangkeumbae'. The average fruit weight of 'Niitaka' was 672.0 g and the amount of fruit in the range of 601-750 g was the highest, accounting for 33.8% of the production and as for 'Whangkeumbae', the average fruit weight was 477.5 g and fruit in the range of 401-600 g accounted for 72.5% of total production. The weight of the 'Niitaka' was evenly distributed in each range from below 300 g to over 1 kg and the percent of the regular shaped fruit in 'Whangkeumbae' was high as the distribution range of the fruit weight was narrow. The brix degree and the soluble solid content (SSC)/acidity ratio of 'Niitaka' had a significantly positive correlation with the fruit weight, the length, and the diameter of the fruit. The brix degree also had a positive correlation with weight and diameter of the fruit for 'Whangkeumbae'. As for the difference in fruit quality according to fruit weight for each variety, the brix degree was low in 'Niitaka' that were below 451 g and the fruit firmness was low in fruits weighing under 400 g. There was no difference according to fruit weight in 'Whangkeumbae'. The fruit size was impacted by the fleshy part and the ratio of fleshy part was higher as the fruit size became larger. The weight of the fruit, brix degree, and the SSC/acidity ratio were low while the firmness was high in light thinning treatment for 'Niitaka' and in the case of 'Whangkeumbae', the fruit weight and brix degree were both low in light thinning treatment. The brix degree was higher in bigger sized fruit in all thinning intensity for 'Niitaka', the case in light thinning treatment especially where the quality was poor due to low brix degree in fruits that weighed less than 450 g, on the other hand, there was no difference in the quality due to the fruit weight among the thinning intensity for 'Whangkeumbae'. Therefore, it is possible to produce smaller sized fruits in 'Niitaka' by controlling the thinning intensity, as it is inevitable to result in lower quality fruits, however, it is projected that we can produce small to mid-sized fruits in 'Whangkeumbae' by controlling the thinning intensity without causing the decline in fruit quality.
Influence of Defoliation by Marssonina Blotch on Vegetative Growth and Fruit Quality in 'Fuji'/M.9 Apple Tree
SaGong, Dong-Hoon ; Kweon, Hun-Joong ; Song, Yang-Yik ; Park, Moo-Yong ; Nam, Jong-Chul ; Kang, Seok-Beom ; Lee, Sang-Gyu ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 531~538
This study was carried out to investigate the influence of defoliation by Marssonina blotch (Diplocarpon mali Harada et Sawamura) on vegetative growth and fruit quality in 'Fuji'/M.9 apple tree. Soluble solid contents decreased when the defoliation percentage by Marssonina blotch was over 10% before the end of September, and fruit weight decreased when percentage of defoliation was over 30%. Fruit red color and starch contents tend to decrease as percentage of defoliation near the fruit increased. Return bloom, fruit weight, and shoot growth the following year tend to decrease as percentage of defoliation increased. Photosynthetic rate of healthy leaves in bourse shoot during the end of September was maintained about
, effects in increasing fruit growth and soluble solid contents after the end of September. Photosynthetic rates for the damaged leaf, damaged area was over 50% on the leaf surface, while 30% of the photosynthetic rates of healthy leaf are without damage applied with Marssonina blotch at the end of September. The results show that the decrease of fruit quality in defoliation treatments may be caused by the decrease of starch contents in fruit, and that was caused by the photosynthetic rates of leaves near fruit was decreased by Marssonina blotch in the wake of August.
Control of Unseasonable Flowering in Chrysanthemum 'Baekma' by 2-chloroethylphosphonic Acid and Night Temperature
Lee, Chang-Hee ; Cho, Myeong-Whan ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 539~548
This study was conducted to control unseasonable flowering in a standard chrysanthemum 'Baekma' bred in Korea by 2-chloroethylphosphonic acid (ethephon) and night temperature (NT) through suppression of the transition from a vegetative to a reproductive stage under long day length caused by high NT in summer season. Ethephon was applied either once or twice at a concentration of 0, 200, 400, or
. The NT within controlled mini-plastic houses was maintained at 13, 17, or
. The NT at
showed the greatest inhibiting effect of unseasonable flowering among all NTs regardless of various combinations of ethephon concentration and frequency. Moreover, the inhibition tendency of unseasonable flowering was distinctly decreased in a NT-dependant manner. Higher NTs reduced cut flower length and number of leaves, but increased the number of young leaves attached to top part of the flower. Higher ethephon concentrations and lower NTs increased cut flower length and the fresh weight of total, stem, and leaves due to the extension of vegetative growth period. Thus, if it is difficult to control the NT below
in greenhouses in the summer season, we recommended to spray more than
ethephon once after planting to suppress unseasonable flowering and to ensure sufficient length of cut flowers.
Predicting Harvest Date of 'Niitaka' Pear by Using Full Bloom Date and Growing Season Weather
Han, Jeom-Hwa ; Son, In-Chang ; Choi, In-Myeong ; Kim, Seung-Heui ; Cho, Jung-Gun ; Yun, Seok-Kyu ; Kim, Ho-Cheol ; Kim, Tae-Choon ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 549~554
The effect of full bloom date and growing season weather on harvesting date of 'Niitaka' pear (Pyrus pyrifolia) in Naju province and the model of multiple linear regression for predicting the fruit growing days was studied. Earlier year in full bloom date, the harvesting date tended earlier but fruit growing days tended longer. Mean and coefficient of variation of fruit growing degree days (GDD) accumulated daily mean and maximum temperature at the base of
from full bloom date to harvesting date was 3,565, 2.9% and 4,463, 2.5%, respectively. Fruit growing days was not correlated with the fruit GDD accumulated daily mean and maximum temperature at the base of
in each month but highly correlated with GDD accumulated daily meteorological factors at days after full bloom date. Especially, it was highly negatively correlated with GDD accumulated daily mean and maximum temperature at the base of
day after full bloom to
day. The determination coefficient (
) of multiple linear regression model by full bloom date, GDD accumulated daily mean and maximum temperature from
day after full bloom to
day for predicting fruit growing days was 0.7212. As a result, the fruit growing days of 'Niitaka' pear in Naju province can predict with 72% accuracy by the model of multiple linear regression.
Effect of GA
Treatment on Bud Formation, Fruit Set, and Enlargement in Ardisia pusilla
Kil, Mi-Jung ; Huh, Yeun-Joo ; Kwon, Young-Soon ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 555~560
The objective of this study was carried out to investigate the proper plant growth regulator for increasing the number of flower, fruit set, and to enlarge the size of the berries in Ardisia pusilla. Flower bud formation was used rooted cutting, and fruit set, enlargement, and coloration of fruit were used with two years-old.
concentrations were treated with 0, 100, 200, or
. Flower bud formation was effective in
and it was 1.8 times greater than control. Plant growth regulators were applied by foliar spray at full bloom stage to increase the fruit set. As a result,
was the most effective for increasing fruit set. Also, auxins of 4-CPA (Tomatotone, Donbu hitech Co., Korea) and dichloprop triethanol amine (Antifall, Bayer Crop Science Co., Ltd., Korea) were effective. When
concentrations of 0.5 and
were used, fruit set (%) reached to 70% and 77%, respectively. Effectiveness of
was 1.8 times greater than control. Also, auxins, dichloprop triethanol amine increased to about 7-12% during fruit setting, but cytokinin and anti-gibberellin were ineffective. To investigate the fruit enlargement and coloration,
was treated with 0.3, 0.6, and
. Fruit enlargement was achieved to about 15% by
was treated 3 times at the interval of 1 month per treatment when fruit size was about 2-3mm (after full-blooming two months). But anthocyanin contents for coloration of fruit skin were not significant according to
concentration. The results showed that
enhanced bud formation, fruit set and enlargement of fruit size in Ardisia pusilla.
Cold Tolerance of Native and Introduced Evergreen Rhododendron Species According to Morphological and Physiological Changes
Lee, Byung-Chul ; Kim, Seong-Min ; Cheng, Hyo-Cheng ; Shim, Ie-Sung ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 561~567
Cold tolerance of the native Rhododendron species which are on the verge of extinction in Korean nature were compared with the introduced species and its mechanism were studied physiologically with the investigation of the leaf angle, leaf curling, and photosynthetic activity. The degree of cold tolerance measured with the leaf burning after winter season was higher in the native species, Rhododendron brachycarpum and Rhododendron brachycarpum var. roseum than all the introduced species. 'Nova Zembla', an introduced species, showed high sensitivity to the low temperature. Changes in leaf angle by the low temperature were bigger in 2 native species and 'Parker's Pink' than the other introduced species and small comparatively in 'Nova Zembla' and 'Cunningham's White' cultivar. Leaf curling also occurred strongly in 2 native species by the low temperature. While, it was comparatively little and mild in the other introduced species. Therefore these results suggested that the leaf movement such as leaf angle change and curling adapted to the low temperature is positively related to the cold tolerance of 2 native species. By the way, such relationship is not explainable in the cold-sensitive 'Parker's Pink' cultivar showing comparatively stronger leaf movement. Photosynthetic activity measured before the winter season was high in the cold-tolerant R. brachycarpum and its recovery after winter season was faster in the 2 native species and the introduced 'Cynosure' cultivar than the other introduced species. They were the lowest in the most cold-sensitive 'Nova Zembla'. This phenomena occurred similarly even in the stomatal conductivity, suggesting that the movement of water from the roots to the leaves is better and then the leaf burning after winter season become small in the cold-tolerant species. The recovery of photosynthetic activity and stomatal conductivity was comparatively slower in the cold-sensitive 'Parker's Pink'. From the above results, leaf behavior adapted to the low temperature during the winter season and water movement to the leaves are related collectively to the cold tolerance represented as the leaf burning in the Rhododendron species is suggested.
Design of Measuring Trays in the Irrigation System Using Drainage Electrodes for Tomato Perlite Bed Culture
Kim, Sung-Eun ; Kim, Young-Shik ; Sim, Sang-Youn ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 568~574
Measuring tray as a component in irrigation control system using drainage electrodes was designed and applied for tomato perlite bed culture, and the effectiveness of the irrigation control system was investigated in terms of cultural development and cultivation costs. Five different types of measuring trays equipped with drainage electrodes were tested and the traditional tray was used as the control equipped with time clock. After the first experiment, "Tube-2" was removed because of instability of water content in the substrate. After second experiment, "Tube-1" was removed because of instability of water content in the substrate and low plant yields. In third experiment, "Up-Board" exhibited the best stability in water contents and yields as well as efficiencies in water and fertilizer utilization. The "Up-Board" was the most economical and the easiest system among the tested trays. Therefore, the "Up-Board" system was concluded as the excellent design to apply for the control method using drainage electrodes for tomato perlite bed culture.
Qualitative Changes in Grafted Cactus Cultivars during Simulated Transportation
Yoon, Jung-Han ; Song, Jong-Eun ; Byoun, Hye-Jin ; Park, Ju-Hyun ; Kim, Young-Ho ; Son, Ki-Cheol ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 575~582
This experiment was conducted to study the qualitative changes of grafted cactus after harvest and to examine the decomposition characteristics of pathogenic fungi which occurs or grows during the simulated shipping period. Plant materials with four varieties of Gymnocalycium mihanovichii var. friedrichii including, 'Hukwang', 'Huhong', 'Hwangwol', 'Yeunhwa' and two varieties of Chamaecereus silvestrii f. variegate such as 'Goldcrown' and 'Yellowcrown' were used. During the simulated shipping period, the fresh-weight, bulb diameter, carbon dioxide emission rate, and decomposition rate were observed. The regeneration rate and decomposition rate were observed for the grafted cactuses that were placed in a greenhouse environment with a temperature of
and humidity of
after 40 days of simulated shipping. There were reductions in the fresh-weight and bulb diameter in every variety as time passed while the carbon dioxide emission rate showed no meaningful difference by each variety. Furthermore, the decomposition rate in the scion was higher than in the stock. According to the analysis of pathogenic fungi by decomposition characteristics, Alternaria sp., Cladosporium sp., Colletotrichum sp., Fusarium sp., Penicillium sp. in G. mihanovichii var. friedrichii were found and Alternaria sp., Bipolaris sp., Cladospoirum sp. in C. silvestrii f. variegate were identified. Therefore, to maintain and improve the quality of grafted cactus, it is necessary to analyze the factors of decomposition from the time of harvest until the point of export and develop a process technology to minimize the decomposition rate.
Effect of 1-methylcyclopropene on Postharvest Quality in 'Formosa' Plums (Prunus salicina L.) Harvested at Various Stages of Maturity
Lee, Ji-Hyun ; Bae, Rona ; Lee, Seung-Koo ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 583~591
'Formosa' plums were picked at three maturity stages according to skin redness, treated with
for 24 h and then stored for 21 days at
. Ethylene production, respiration rate, firmness, color, TSS, TA, and ethanol concentration were determined. Total phenolic content, total flavonoid content, and antioxidant capacity were determined periodically by separating the flesh from the peel. Ethylene production and respiration rate were strongly inhibited in all stages of the 1-MCP-treated fruit, while ethylene production dramatically increased in all stages of non-treated fruit until 11 days after harvest, after which it decreased until the end of the experiment. The respiration rate of the stored fruit increased for 11 days in stages 1 and 2 and for 7 days in stage 3 and decreased after. 1-MCP-treated fruit in all stages showed delay in fruit quality changes such as firmness, TA, skin color, and ethanol concentration, but non-treated fruit did not. Total phenolic contents, total flavonoid contents and antioxidant capacity of 'Formosa' plums were not affected by 1-MCP treatment or maturity stage. However, those values were higher in the peel than in the flesh.
Improvement of Postharvest Fruit Quality in 'Formosa' Plums (Prunus salicina) after Treatment with 1-methylcyclopropene during Storage
Bae, Rona ; Lee, Ji-Hyun ; Lee, Seung-Koo ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 592~599
Plum is a climacteric fruit and softening is a serious problem for storage and transportation. Thus
of 1-methylcyclopropene (1-MCP) was applied to plums to prolong their shelf life and maintain quality. Japanese plums (Prunus salicina cv. Formosa) were stored at
for 14 days and 46 days respectively, with or without 1-MCP treatment. Fruits were treated with
for 24 h. Ethylene production and respiration rate were strongly inhibited in 1-MCP-treated fruits at
. It was also observed that there was less ethanol and acetaldehyde evaporation in 1-MCP-treated fruits stored at
compared to those in control fruits not treated with 1-MCP. Fruit qualities, such as firmness, titratable acidity (TA), skin color, and decay, changed more slowly in 1-MCP-treated fruits stored at
than in untreated fruits. There were no differences in the ethylene production or respiration rate between the groups of fruits stored at
throughout the experiment. Chilling injury was also inhibited by the application of 1-MCP during storage at
. When the fruits stored at
with or without 1-MCP were transferred to
after 25 days, the differences in ethylene production and respiration rate, firmness, TA, TSS, and acetaldehyde and ethanol evaporation between the initial (after being stored at
for 25 days) and the final measurements (after being stored at
for 25 days and then transferred to
for three days) were lower in 1-MCP treated fruits than in non-treated fruits. The postharvest application of 1-MCP in Formosa plums showed positive effects at both
storage conditions with regard to quality, such as low ethylene production and low respiration rates, firmness, TA, ethanol, and acetaldehyde evaporation, chilling injury, and decay.
Classification of Allium monanthum and A. grai by ISSR Markers
Lee, Sais-Beul ; Kim, Chang-Kil ; Oh, Jung-Yeol ; Kim, Kyung-Min ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 600~609
One hundred twenty two accessions of 6 species in genus Allium were collected throughout 5 regions of Korea. Their genetic relationship was investigated by using inter simple sequence repeat (ISSR) markers. The morphological analysis was measured for 6 quantitative and quantified for 1 qualitative trait. ISSR analysis obtained a total of 370 polymorphic bands by using seventeen primers. The cluster analysis of genus Allium based on morphological data could identify three groups. The accessions of Allium belonged to the Allium monanthum clustered into five groups at genetic distance ranging from 0.94 on the base of ISSR analysis. Correlation analysis between morphological and ISSR analysis showed low coefficient(r = 0.036). These markers are thought to be used in research of molecular markers for classification and cross breeding of Allium monanthum and A. grai.
Resistance of Cultivars of Chinese Cabbage to Plasmodiophora brassicae Isolates of Several Races Collected in Korea
Jo, Su-Jung ; Shim, Sun-Ah ; Jang, Kyoung-Soo ; Choi, Yong-Ho ; Kim, Jin-Cheol ; Choi, Gyung-Ja ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 610~616
Clubroot disease caused by Plasmodiophora brassicae, induces damage to cruciferous vegetables worldwide. For control of the disease, many CR (clubroot resistant)
hybrid cultivars of Chinese cabbage have been bred and released in Korea. In this study, we determined the race of 10 field isolates of P. brassicae collected from ten regions in Korea using Williams' differential varieties and investigated the degree of resistance of 25 commercial CR cultivars of Chinese cabbage to the isolates. The clubroot pathogens were assigned into two (HS and YC), two (HN1 and HN2), two (DJ and SS) and four (GS, GN, JS, and PC) isolates for race 2, race 4, race 5, race 9, respectively. All CR cultivars showed similar response, resistant or susceptible, to each isolate and the P. brassicae isolates were divided into two groups. Among them, the DJ, GS, GN, HS, and JS isolates could not infect the CR cultivars. In contrast, the SS, HN1, HN2, PC, and YC isolates caused severe clubroot disease on the CR cultivars like susceptible cultivars. Even though they belong to the same race, the CR cultivars showed a different response to the pathogens. The results suggest that the breakdown of CR in Chinese cabbage has already occurred in cultivation areas of Korea and resistance source introduced in CR cultivars may be very limited. In addition, it is likely that resistance genes of Williams' differential varieties to P. brassicae are different from the gene of CR cultivars of Chinese cabbage used in the study.
Frequency and Growth Characteristics of Polyploids Occurred Spontaneously in Some Mandarin Hybrids
Song, Kwan-Jeong ; Kim, Sat-Byul ; Park, Jae-Hyun ; Oh, Eun-Ui ; Lee, Kyung-Uk ; Kim, Dong-Wook ; Kang, Jong-Hoon ; Kim, Jeong-Soon ; Oh, Jeong-Hwan ; Gmitter, Fred G. ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 617~622
The study was conducted to determine the efficiency in producing spontaneous polyploids in some mandarin hybrids with different seed embryony. Seed formation by open pollination, frequency of spontaneous polyploids, and plant growth characteristics were evaluated in four mandarin hybrids with polyembryony such as 'Amakusa', 'Haruka', 'Hayaka', and 'Seminole' and two with monoembryony such as 'Benibae' and 'Harehime'. The mean number of the developed seeds per fruit was 10.0 and frequency of small seeds was 25.1%. Polyploids were selected from plants germinated in vitro by a flow cytometry and confirmed by chromosome analysis. One triploid was produced from 'Harehime', one tetraploid, 'Amakusa', and one tetrapoid, 'Benibae'. There were little differences in leaf shape, thickness, petiole length, and internode length between diploids and polyploids such as tri- or tetraploid. However, polyploids had larger stomata and lower density of stomata in abaxial epidermis than diploids. SPAS indicating chlorophyll content and photosynthetic rate were significantly affected by ploidy level. The results indicated that spontaneous polyploids might be produced by open pollination in some mandarin hybrids and monoembryony had higher frequency in polyploid occurrence than polyembryony.
Isolation of Myrosinase and Glutathione S-transferase Genes and Transformation of These Genes to Develop Phenylethylisothiocyanate Enriching Chinese Cabbage
Park, Ji-Hyun ; Lee, Su-Jin ; Kim, Bo-Ryung ; Woo, Eun-Teak ; Lee, Ji-Sun ; Han, Eun-Hyang ; Lee, Youn-Hyung ; Park, Young-Doo ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 623~632
To increase the anti-carcinogens phenylethylisothiocyanate (PEITC), myrosinase (MYR), and glutathione S-transferase (GST), genes related to PEITC pathway were isolated and the gene expressions were regulated by Agrobacterium transformation. Isolated cDNAs, MYR, and GST genes were 1,647 bp and 624 bp, respectively, and the protein expression was confirmed through pET system. Thereafter, we constructed a sense-oriented over-expressing myrosinase (pBMY) and RNAi down-regulated GST (pJJGST) binary vectors for the Chinese cabbage transformation. After the transformation, thirteen over-expressing transgenic Chinese cabbage plants (IMS) with pBMY and five down-regulated ones (IGA) with pJJGST were selected by PCR analysis. Selected
transgenic plants were generated to
plants by self-pollination. Based on the Southern blot analysis on these
transgenic plants, 1-4 copies of T-DNA were transferred to Chinese cabbage genome. Thereafter, RNA expression level of myrosinase gene or GST gene was analyzed through real-time RT PCR of IMS, IGA, and non-transgenic inbred lines. In case of IMS lines, myrosinase gene was increased 1.03-4.25 fold and, in IGA lines, GST gene was decreased by 26.42-42.22 fold compared to non-transgenic ones, respectively. Analysis of PEITC concentrations using GC-MS it showed that some IMS lines and some IGA lines increased concentrations of PEITC up to 4.86 fold and up to 3.89 fold respectively compared to wild type. Finally in this study IMS 1, 3, 5, 12, and 15 and IGA 1, 2, and 4 were selected as developed transgenic lines with increasing quantities of anti-carcinogen PEITC.
The Brassica rapa Tissue-specific EST Database
Yu, Hee-Ju ; Park, Sin-Gi ; Oh, Mi-Jin ; Hwang, Hyun-Ju ; Kim, Nam-Shin ; Chung, Hee ; Sohn, Seong-Han ; Park, Beom-Seok ; Mun, Jeong-Hwan ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 633~640
Brassica rapa is an A genome model species for Brassica crop genetics, genomics, and breeding. With the completion of sequencing the B. rapa genome, functional analysis of the genome is forthcoming issue. The expressed sequence tags are fundamental resources supporting annotation and functional analysis of the genome including identification of tissue-specific genes and promoters. As of July 2011, 147,217 ESTs from 39 cDNA libraries of B. rapa are reported in the public database. However, little information can be retrieved from the sequences due to lack of organized databases. To leverage the sequence information and to maximize the use of publicly-available EST collections, the Brassica rapa tissue-specific EST database (BrTED) is developed. BrTED includes sequence information of 23,962 unigenes assembled by StackPack program. The unigene set is used as a query unit for various analyses such as BLAST against TAIR gene model, functional annotation using MIPS and UniProt, gene ontology analysis, and prediction of tissue-specific unigene sets based on statistics test. The database is composed of two main units, EST sequence processing and information retrieving unit and tissue-specific expression profile analysis unit. Information and data in both units are tightly inter-connected to each other using a web based browsing system. RT-PCR evaluation of 29 selected unigene sets successfully amplified amplicons from the target tissues of B. rapa. BrTED provided here allows the user to identify and analyze the expression of genes of interest and aid efforts to interpret the B. rapa genome through functional genomics. In addition, it can be used as a public resource in providing reference information to study the genus Brassica and other closely related crop crucifer plants.
A New Gerbera Cultivar, 'Red Auction' with Red Color and Semi-double for Cut Flower
Chung, Yong-Mo ; Hwang, Ju-Chean ; Chin, Young-Don ; Kim, Su-Kyeong ; Ro, Chi-Woong ; Yi, Young-Byung ; Kwon, Oh-Chang ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 641~644
A new standard red color gerbera (Gerbera hybrida Hort.) 'Red Auction' was developed from a cross of '01-120-195' and 'Misty red' followed by seedling and line selections at the Flower Research Institute, Gyeongsangnam-do Agricultural Research & Extension Services (ARES) in 2008. Characteristics trials were conducted three times from 2006 to 2008. 'Red Auction' has semi-double type in good harmony with red color (RHS 45-A) ray floret and a good stable flower shape and strong peduncle. Its vase life was 11.3 days. The average yield of 'Red Auction' was 48.8 flowers per plant a year in greenhouse yield trials carried out from 2006 to 2008. This cultivar registered for commercialization in 2010.
Early Matured Pear Cultivar 'Supergold' with High Quality and Greenish-white Skin for Overseas Trade
Kang, Sam-Seok ; Kim, Yoon-Kyeong ; Cho, Kwang-Sik ; Jeong, Sang-Bouk ; Hwang, Hea-Seong ; Kim, Myung-Su ; Shin, Il-Sheob ; Shin, Yong-Uk ; Won, Kyeong-Ho ; Choi, Jang-Jeon ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 645~650
Pear cultivar 'Supergold' (Pyrus pyrifolia var. culta Nakai) was originated from the cross between 'Chuwhangbae' and 'Manpungbae' with the aims of improving the fruit quality of 'Chuwhangbae' cultivar at Pear Research Station of National Institute of Horticultural & Herbal Science, Rural Development Administration in 1994. 'Supergold' was preliminarily selected in 2002 and named in 2008. The tree shows a vigorous growth habit and semi-spread characters like as 'Manpungbae'. Furthermore, it has sufficient flowers and carries abundant pollen grains, so it can also be used as a pollinator. 'Supergold' is highly resistant to black leaf spot (Alternaria kikuchiana) in the field condition. The optimum harvest time is around Sep. 11th, which is ahead of 'Whangkeumbae' about 5 days in the harvest period. The fruit shape is oblate and fruit skin color is greenish-white at harvesting time. The average weight of fruit is 570 g, and the soluble solids content is
. The flesh is very soft and juicy, and renders good eating quality. Shelf life is about 6 months under the cold storage condition. To determine the self-incompatibility (SI) genotype of 'Supergold' pear cultivar, it was crossed with other cultivars of which SI genotypes have already known. The result of cross-pollinations of 'Supergold' with other cultivars showed relatively high rates of fruit set from 64.5% to 91.0%, except for the cross with pollens of 'Nijisseiki' that represented only 28.8% of fruiting rate. Although sometimes the stigma of 'Supergold' crossed with 'Hayatama', 'Chojuro', and 'Nijisseiki' showed malformed pollen tube tips, 'Supergold' is generally supposed to have cross-compatibility with all other pollen donor cultivars. It is considered that the S-allele of 'Supergold' is
, which is based on the result of PCR-RFLP.
A New Cymbidium Cultivar 'Orange Bowl' with Orange Colored Flower and Medium Sized Plant
Kim, Mi-Seon ; Rhee, Hye-Kyung ; Park, Sang-Gun ; Jung, Hyang-Young ; Choi, Sung-Yul ; Lim, Jin-Hee ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 651~654
Cymbidium 'Orange Bowl' (Lucky Rainbow 'Randevous'
'Eastern Star') was developed from a cross between hybrids at the National Institute of Horticultural & Herbal Science, Rural Development Administration in 2006. A cross was made between the pink colored flower C. Lucky Rainbow 'Randevous' as maternal line and pure yellow colored flower, C. 'Eastern Star' as paternal line in 1995. The seed germination, cultivation, selection, and characteristic trials were conducted from 1996 to 2006. The line was named as Wongyo F1-18 and phenotype was characterized in 2006 as a new 'Orange Bowl'. The 'Orange Bowl' has having light yellow basal color (RHS, YO21D) and orange line (RHS, OR30B) on both of sepal and petal with red lip (RHS, OR30B). 'Orange Bowl' has about 10.9 flowers per flower stalk and flower size of 7.4 cm. General appearance of the petals and sepals is slightly incurved shape. The plant size is intermediate having erect peduncle. Blooming is started from the late of January (mid winter) under optimal culture condition. Leaf attitude and twisting is half- erect and very weak respectively. This hybrid has attractive floral arrangement, long flower stalk (71.8 cm) and vigorous growth. We expect that 'Orange bowl' has a great potential for exporting to Chinese market.
'Hongan', a New Mid-Season Apple Cultivar
Kwon, Soon-Il ; Kim, Jung-In ; Kim, Mok-Jong ; Paek, Pong-Nyeol ; Shin, Yong-Uk ; Hwang, Jung-Hwan ; Kang, Sang-Jo ; Kim, Dae-Il ; Choi, Cheol ; Kang, In-Kyu ;
Korean Journal of Horticultural Science and Technology, volume 29, issue 6, 2011, Pages 655~658
A new cultivar 'Hongan' was originated from an artificial cross between 'Fuji' and 'Jonathan' carried out at National Institute of Horticultural & Herbal Science in 1993. The cultivar was preliminarily selected among the elite siblings for its high fruit quality in 2002. After regional adaptability test at five districts for subsequent four years as 'Wonkyo Ga-32', it was finally selected in 2006. 'Hongan' is characterized by the following. Optimum harvest time is late September. Shape of the mature fruit at 309 g on mean weight is globosity with a light red skin on a greenish yellow ground and yellowish white flesh. The fruit contains favorable total soluble solids at
and an acidity at 0.28%. Safe storage period for the fruit is 3 weeks at room temperature. It is resistant to Bitter rot. 'Hongan' also reveals a physiological cross compatibility with leading cultivars such as 'Gamhong' and 'Tsugaru' in addition to its maternal parent 'Fuji'. Tree topology is semi-spreading with vigorous growth habit.