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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 31, Issue 6 - Dec 2013
Volume 31, Issue 5 - Sep 2013
Volume 31, Issue 4 - Aug 2013
Volume 31, Issue 3 - Jun 2013
Volume 31, Issue 2 - Apr 2013
Volume 31, Issue 1 - Feb 2013
Selecting the target year
Comparison of Color Quality, Winter Color, and Spring Green-up among Major Turfgrasses Grown under Three Different Soil Systems
Kim, Kyoung-Nam ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 259~268
DOI : 10.7235/hort.2013.11131
This study was carried out to evaluate the visual turfgrass's color quality, winter color, and spring green-up under three different soil systems and to make a practical use for sports turf design and construction. Several turfgrasses were evaluated in multi-layer, USGA and mono-layer systems. Turfgrass entries in the study comprised of 3 cultivars from Korean lawngrass (Zoysia japonica Steud.) of typical warm-season grass (WSG) and 3 blends and 3 mixtures from Kentucky bluegrass (KB, Poa pratensis L.), perennial ryegrass (PR, Lolium perenne L.), and tall fescue (TF, Festuca arundinacea Schreb.) of cool-season grass (CSG). Significant differences were observed in the turfgrass's color quality, winter color, and spring green-up in the study. Seasonal variation of visual turf color greatly occurred according to soil systems and turfgrasses. Multi-layer and USGA systems were highly associated with better visual color ratings, as compared with mono-layer system. Regardless of soil system, visual turf color in all entries was better from spring to fall than in winter. Great color differences were observed during a period of early December to early spring. CSG produced a better color quality over WSG in any soil system. Overall color ratings for CSG were KB > PR > Mixtures > TF. As for a winter color, its ranking was USGA > multi-layer > mono-layer system. No difference was found in winter among cultivars of Korean lawngrass, being completely brown, but great differences among CSG. Rated best for winter color was PR, followed by CSG mixtures, KB and finally TF in order. It was generally conceded that fast green-up in spring was greatly related with multi-layer over mono-layer system and also CSG over WSG. Among CSG, TF had a fastest green-up. PR was also fast in green-up, but poor in color uniformity. KB, however, was the slowest due to shallow rooting system, when compared with other CSGs. These results demonstrate color differences were greatly variable according to soil systems and also among turfgrass species. A precise decision should be made in selecting turfgrass species and soil system. Multi-layer and USGA systems were considered as the suitable one for turfgrass color quality, winter color and spring green-up. It is a great necessity to combine proper soil system, right turfgrass species, and appropriate mixing rates by a concept-oriented approach, when establishing garden, parks, soccer field, and golf courses and so on.
In Vitro Sugar Accumulation in Juice Sacs of 'Shiranuhi' Mandarin
Moon, Doo-Gyung ; Han, Sung-Gap ; Joa, Jae-Ho ; Kim, Chun-Hwan ; Seong, Ki-Cheol ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 269~274
DOI : 10.7235/hort.2013.12118
To further our understanding of sugar accumulation in 'Shiranuhi' mandarin [(C. unshiu
C. reticulate], we investigated the patterns of sugar uptake in juice sacs exposed to different concentrations of sucrose, fructose and glucose in vitro. Data was also collected on the change in weight and shape of the in vitro juice sacs over time. Soluble solids content, sugar content and acidity content were highest at 20% sucrose, fructose and glucose solution content; while fructose content was highest at 5% sucrose concentration. Furthermore, the juice sac's fresh weight was highest at 5% sucrose and lowest at 20% fructose content. The shape of the juice sacs also differed in different sugar concentration and type. Overall, sucrose, fructose and glucose content in juice sacs increased with the sugar concentration. These results suggest that sugar translocation into juice sacs is actively induced by high sugar concentration in the medium. Thus, it can be concluded that sugar and acid accumulation in juice sacs increased with sugar concentration in vitro culture.
Screening Differential Expressions of Defense-related Responses in Cold-treated 'Kyoho' and 'Campbell Early' Grapevines
Ahn, Soon Young ; Kim, Seon Ae ; Han, Jae Hyun ; Kim, Seung Heui ; Yun, Hae Keun ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 275~281
DOI : 10.7235/hort.2013.13012
Low temperature is one of the major environmental factors that affect productivity including reduced growth and budding of vines, and changes of metabolic processes in grape (Vitis spp.). To screen the specific expression of abiotic stress-related genes against cold treatment in 'Kyoho' and 'Campbell Early' grapevines, expression of various defense-related genes was investigated by RT-PCR and real-time PCR. Among the 67 genes analyzed by RT-PCR and real-time PCR, 17 and 16 types of cDNA were up-regulated, while 5 and 6 types were down-regulated in cold-treated 'Kyoho' and 'Campbell Early' grapevines, respectively. Genes encoding carotene (Cart3564 and Cart4472), chalcone isomerase (CHI), cytochrome P450 (CYP), flavonol synthase (FLS), endo-
-glucanase precursor (Glu), glutathione peroxidase (GPX), glutathione-S-transferase (GST), leucine-rich repeats (LRR), manganese superoxide dismutase (Mn-SOD), phenylalanine ammonia lyase (PAL), polygalacturonase-inhibiting protein (PGIP), proline rich protein 2 (PRP2), small heat shock protein (sHSP), temperature induced lipocalin (TIL), and thaumatin-like protein (TLP) were up-regulated, while those encoding CBF like transcription factor (CBF1), chitinase-like protein (CLP), cold induced protein (CIP), glycerol-3-phosphate acyltransferase (GPAT), and mitogen-activated protein kinase (MAPK) were down-regulated by low temperature treatment in both in 'Kyoho' and 'Campbell Early'.
Characteristics of Everbearing Strawberry Cultivars and the Effect of Precooling Treatment to Maintain Quality of 'Charlotte' Cultivar Grown on Highland in Summer Season
Hwang, Dae Keun ; Eum, Hyang Lan ; Yeoung, Young Rog ; Park, Kuen Woo ; Hong, Sae Jin ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 282~288
DOI : 10.7235/hort.2013.12104
This study was conducted to investigate the quality characteristics of eight everbearing strawberry cultivars and the effect of precooling treatment to maintain the quality during storage and shelf life of 'Charlotte'. Several quality parameters including firmness, soluble solids content (SSC), color, soluble sugars, and organic acids were evaluated. For Successful marketing everbearing strawberries required more than 1 N of firmness and
of SSC, respectively. 'Albion', 'Charlotte', and 'Goha' cultivars were higher in fruit SSC and 'Charlotte' cultivar was higher in fruit firmness among eight cultivars examined in this study. Fruit had more bright red color in 'Charlotte', 'Flamingo', 'GW-4', and 'San Andreas', which may reflect the consumer acceptance. Physicochemical characteristics of 'Charlotte' strawberry after with/without room precooling treatment were evaluated during storage at
and additional 3 days at
for shelf-life. Weight loss increased about 8% in the fruits stored at
for 3 days, while in low temperature storage was about 2% for 7 days showing precooling was more effect on during shelf life periods rather than storage periods. Decay was not found during storage at
regardless of precooling treatment, but fungal growth was found in all the treatments after transferred to room temperature. Precooling treatment did not affect fruit color in shelf life period. For advanced marketing, everbearing strawberry should maintain in low temperature less than
to sustain quality, but the room precooling showed less significant effect to maintain quality on 'Charlotte' cultivar.
Optimization of Curing Treatment and Storage Temperature of Chinese Yam
Lee, Dong-Suk ; Park, Youn-Moon ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 289~298
DOI : 10.7235/hort.2013.12195
Effects of curing treatments and storage temperature on the quality of Chinese yams (Dioscorea polystachya Turcz.) were investigated stepwise in three consecutive years for the optimization of postharvest handling procedures. Tuberous roots were harvested in early to mid November and cured under ambient or
heated air conditions for various periods according to the treatment conditions. Storage temperatures in the range of 0.5 to
were phased in to avoid chilling injury while examining storage potential from 4 to 7 months. As poststorage technology, short-term
hot-air exposure or low shelf temperature treatments were additively imposed. Curing treatments, especially heated air curing for 3-5 days tended to reduce the respiration and weight loss during storage while maintaining flesh firmness. Storage at
brought out typical chilling injury symptoms on the shelf with increases in respiration and lower flesh firmness by tissue breakdown resulting in the rapid loss of marketability. Optimum storage temperature appeared to be the
range which suppresses quality deterioration while avoiding chilling injury. Low shelf temperature seemed to be a necessary part of postharvest handling system to keep marketability through control of poststorage disorders such as rooting and decay. Overall results suggested that optimized postharvest program consisting of heated-air curing, storage at
, and low shelf temperature could extend storage potential of Chinese yam to longer than 7 months.
Characterization of the Gene Encoding Radish (Raphanus sativus L.) PG-inhibiting Protein
Hwang, Byung-Ho ; Kim, Hun ; Lim, Sooyeon ; Han, NaRae ; Kim, Jongkee ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 299~307
DOI : 10.7235/hort.2013.12211
A radish (Raphanus sativus L.) polygalacturonase-inhibiting protein (PGIP) gene was cloned and compared to the PGIP gene (BrPGIP2) from Chinese cabbage (Brassica rapa ssp. pekinensis) in order to gain more information on controlling a disease and improving produce quality. To clone the radish PGIP gene, primers were designed based on conserved sequences of two PGIP genes (BnPGIP1 and BnPGIP2) from rape (B. napus L. ssp. oleifera), Chinese cabbage and Arabidopsis thaliana. PCR cloning was performed with cDNA from the stigma of radish 'Daejinyeoreum' as a template to confirm DNA fragments which were about 600 base pair in size. Sequence analysis revealed 84.1% homology with BrPGIP2 and 70.1% with BnPGIP1. DNA walking was conducted to confirm the open reading frame of 972 bp, and the gene was named RsPGIP1. RsPGIP1 consisting with 323 amino acids (aa) has a high leucine content (54/323) and contains 10 leucine-rich repeat domains, as do most BrPGIPs of Chinese cabbage. The gene expression of RsPGIP1 was induced by abiotic stresses and methyl jasmonate. It showed enrichment in the stigma and the primary root than a leaf. Cloning RsPGIP1 will aid to further apply practices on postharvest quality maintenance and disease control of the root.
Effect of 1-methylcyclopropene Treatment on Extension of Freshness and Storage Potential of Fresh Ginseng
Park, Me-Hea ; Shin, Yu-Su ; Kim, Sun-Ju ; Kim, Ji-Gang ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 308~316
DOI : 10.7235/hort.2013.12212
Fresh ginseng has a limited storage life due to the quality change caused by microbial spoilage as well as physiological deterioration. The present study investigated the effects of 1-methylcyclopropene (1-MCP) treatment, an inhibitor of ethylene action, on the microbial growth and quality maintenance of fresh ginseng during storage. Harvested fresh ginsengs were treated with
1-MCP for 20 hours at
and then stored at room temperature (RT) for 18 days or low temperature (
) for 160 days. After 18 days of storage at RT, the percentage weight loss in 1-MCP treated fresh ginseng (8.3%) is lower than that of control (10.1%). During long-term storage at
, weight losses were increased slightly until 120 days without difference between non-treated and 1-MCP ginsengs. In contrast, after 120 days of storage at
, higher increase in weight loss was observed in non-treated ginsengs than in 1-MCP treated ginsengs. Respiration rate and ethylene production of fresh ginseng were reduced by 1-MCP treatments at RT. The 1-MCP treatment also resulted in lower microbial population compared to those of non-treated ginsengs at RT. However, in ginsengs stored at
for short-term (45 days), no differences were noted in weight loss and microbial population between 1-MCP treated and non-treated ginsengs. Major ginsenosides was not changed by 1-MCP treatment during the 7 days of storage at RT. Results suggest that 1-MCP treatment can be used to maintain the freshness of ginseng at room temperature for short term storage and at low temperature for long term storage. 1-MCP treatment could be applied on fresh ginseng to avoid deleterious effect of exogenous ethylene during storage and shipping.
Antimicrobial Effect of Free Available Chlorine on Postharvest Life of Cut Rose 'Brut'
Lee, Young Boon ; Kim, Wan Soon ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 317~321
DOI : 10.7235/hort.2013.12189
This study was conducted to investigate the antimicrobial effect of freely available chlorine (FAC) on the vase life of cut rose 'Brut' (Rosa hybrida L.). Postharvest treatments to extend the vase life of cut roses were divided into holding solution treatment and pulsing solution treatment. In holding solution treatment, the cut roses were treated with the preservative solutions containing FAC (0, 10, 20, and
) and sucrose (0 and 2%, w/v). In pulsing solution treatment, cut roses were dipped into the FAC solutions of 100, 200, and
for 10 seconds. The longest vase life of cut roses was observed in the holding solution with FAC
as 12 days, followed by pulsing with
as 11 days, which were four or five days longer than the control. In addition, relative fresh weight and water uptake were the highest in the holding solutions with FAC 20 and
. The antimicrobial effect of FAC in vase solution was lasted for eight days after treatment, which was offset by sucrose addition. FAC contents in the FAC holding solution mixed with sucrose were exhausted by 88% two days after treatment, whereas only 15% of FAC was reduced in the holding solution without sucrose. This study indicated that FAC can be applied to extension of the postharvest life of cut roses by antimicrobial activity.
Analysis of Genetic Variability Using RAPD Markers in Paeonia spp. Grown in Korea
Lim, Mi Young ; Jana, Sonali ; Sivanesan, Iyyakkannu ; Park, Hyun Rho ; Hwang, Ji Hyun ; Park, Young Hoon ; Jeong, Byoung Ryong ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 322~327
DOI : 10.7235/hort.2013.12210
The genetic diversity and phylogenetic relationships of eleven herbaceous peonies grown in Korea were analyzed by random amplified polymorphic DNA (RAPD). Twenty-four decamer RAPD primers were used in a comparative analysis of these Korean peony species. Of the 142 total RAPD fragments amplified, 124 (87.3%) were found to be polymorphic. The remaining 18 fragments were found to be monomorphic (12.7%) shared by individuals of all 11 peony species. Cluster analysis based on the presence or absence of bands was performed by Jaccard's similarity coefficient, based on Unweighted Pair Group Method with Arithmetic Averages. Genetic similarity range was 0.39 to 0.90 with a mean of 0.64. This study offered a rapid and reliable method for the estimation of variability among different peony species which could be utilized by the breeders for further improvement of the local peony species. Also, the results propose that the RAPD marker technique is a useful tool for evaluation of genetic diversity and relationship amongst different peony species.
Selection and Characterization of Horticultural Traits of Tomato leaf curl virus (TYLCV)-resistant Tomato Cultivars
Kim, Woo-Il ; Kim, Kwang-Hwan ; Kim, Young-Bong ; Lee, Heung-Su ; Shon, Gil-Man ; Park, Young-Hoon ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 328~336
DOI : 10.7235/hort.2013.12186
This study was conducted to evaluate imported tomato
cultivars as breeding materials for the resistance to Tomato yellow leaf curl virus (TYLCV) by molecular markers and bioassay. From marker genotyping and disease evaluation of 40
cultivars, most of the cultivars declared as TYLCV-resistance carried heterozygous marker genotype for the TYLCV resistance genes Ty-1, Ty-3, or Ty-3a, and showed low disease rates. Whereas, 4 of 5
cultivars declared as intermediate resistance showed marker genotype for susceptibility and disease rates ranged 18.1-33.3%. However, the xx cultivars showed inconsistency in marker genotype and disease rate. Characterization of horticultural traits of the
cultivars with TYLCV-resistance indicated that large-size fruit cultivars were higher in yield and similar in sugar contents and solid-acid ratio compared to a control cultivar preferred in the domestic market, although hardness remained to be a problem. On the other hand, cherry tomato cultivars showed lower yield and brix, but longer internode compared to a control cultivar, indicating that breeding for TYLCV-resistance using these cultivars will require more efforts and time compared to large-sized.
Analysis of Genetic Diversity and Identification of Domestic Bred Phalaenopsis Varieties Using SRAP and SSR Markers
Park, Pue Hee ; Park, Yong-Jin ; Kim, Mi Seon ; Lee, Young Ran ; Park, Pil Man ; Lee, Dong Soo ; Yae, Byeong Woo ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 337~343
DOI : 10.7235/hort.2013.12204
The aims of this study were to compare genetic distances among 14 Phalaenopsis varieties using simple sequence repeat (SSR) and sequence-related amplified polymorphism (SRAP) marker systems and to determine the discrimination using SSR. A total of 111 SSR primers and 30 SRAP combinations were initially screened. Twelve SSR primers and thirty SRAP combinations showed high polymorphism among the 14 Phalaenopsis varieties including domestic breeding varieties, conserved in National Institute of Horticultural & Herbal Science (NIHHS). The amplified DNA fragments were separated by denaturing acrylamide gels and detected by silver staining method. A total of 474 polymorphic bands, including 55 by SSRs and 419 by SRAPs, were identified and used for genetic diversity analysis. Polymorphic bands were scored for calculating a simple matching coefficient of genetic similarity and cluster analysis with multi-variate statistical package (MVSP) 3.1. Fourteen Phalaenopsis varieties were classified into three major groups at similarity coefficient value of 0.683 and 0.66 using SRAP and SSR, respectively. Also we could discriminate these domestic breeding Palaenopsis varieties using only SSR 20 and SSR 22. The results indicate that SSR analysis is effective for discrimination among Phalaenopsis varieties and SRAP is useful for genetic diversity when there is no sequence information. These studied SSR and SRAP markers will be useful tools for genotype identification, germplasm conservation and genetic relationship study in Phalaenopsis.
Construction of a DNA Profile Database for Commercial Cucumber (Cucumis sativus L.) Cultivars Using Microsatellite Marker
Kwon, Yong-Sham ; Choi, Keun-Jin ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 344~351
DOI : 10.7235/hort.2013.13008
Microsatellite is one of the most suitable marker for cultivar identification as it has great discrimination power for cultivars with narrow genetic variation. The polymorphism level between 358 microsatellite primer pairs and 11 commercial cucumber cultivars was investigated. Thirty-one primer pairs showed high polymorphism within cucumber cultivars with different fruit types. These markers were applied for the constructing DNA profile data base of 110 commercial cucumber cultivars through multiplex PCR and fluorescence based automatic detection system. A total of 139 polymorphic amplified fragments were obtained by using 31 microsatellite markers. The average of PIC value was 0.610 ranging from 0.253 to 0.873. One hundred and thirty nine microsatellite loci were used to calculate Jaccard's distance coefficients for UPGMA cluster analysis. A clustering group of varieties, based on the results of microsatellite analysis, were categorized into plant shape and fruit type. Almost the cultivars were discriminated by marker genotypes. This information may be useful to compare through genetic relationship analysis between existing variety and candidate varieties in distinctive tests and protection of plant breeders' intellectual property rights through variety identification.
In Vitro Culture of Immature Embryo Obtained by Crossing between Tetraploid Grape 'Fujiminori' and Triploid 'Summer Black'
Koh, Jae Chul ; Oh, Ju Eun ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 352~358
DOI : 10.7235/hort.2013.11138
For the germination and differentiation of immature embryos obtained by artificial crossing between tetraploid grape 'Fujiminori' (Vitis vinifera
V. labruscana) and triploid 'Summer Black' (V. labruscana
V. vinifera), were incubated in vitro using MS medium supplemented with
or coconut water (CW) at various concentrations. The percentage of embryo formation of 'Fujiminori'
'Summer Black' was 64.3%. Embryo germination percentage was higher than 95% in all the
treatments at the concentrations of 0.01, 0.05, 0.25, and
. However, only 15.8-31.6% of the germinated embryos successfully developed into normal plantlets. At higher concentration of
, the plantlets developed infirm hypocotyls with over elongated and less enlarged structure. Among the treatments of CW at the concentrations of 5, 10, 15, and 20% (v/v), 10% and 15% were more effective and plantlet achievement percentage were 68.4 and 66.7%, respectively. The addition of 10% CW was most effective to obtain plantlets with optimal shoot length, node and root numbers. 15% CW was suitable to obtain plantlets with longer roots. Accordingly, the embryo culture using the MS medium supplemented with 10-15% CW was observed to be more efficient for germinating and growing the immature embryos produced from artificial crossing between tetraploid grape 'Fujiminori' and triploid 'Summer Black'.
The Effects of Plant Growth Regulators on Plant Regeneration and Direct Shoots Formation of Petal Explants of Chrysanthemum Flower Color Mutants Varieties, 'ARTI-purple' and 'ARTI-queen'
Lee, Yu-Mi ; Kang, Eun Jeong ; Sung, Sang Yeop ; Kim, Sang Hoon ; Ha, Bo-Keun ; Kim, Dong Sub ; Kim, Jin-Baek ; Kang, Si-Yong ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 359~365
DOI : 10.7235/hort.2013.12219
Chrysanthemum is one of the most popular ornamental plants worldwide. Recently, lots of new and novel chrysanthemum varieties have been developed using mutagenesis. However, there was no study for comparison of tissue culture condition among the mutant varieties derived from one original variety, until now. This study was conducted to compare the efficient regeneration condition of the two chrysanthemum mutant varieties, 'ARTI-purple' and 'ARTI-queen'. Two different flower parts (disk and ray florets) at the unopened and early blooming stages were used for comparison of regeneration condition on MS medium supplemented with combinations of three growth regulators (BA, NAA, and IAA). The highest regeneration rate was identified on the NAA and BA combination when the disk florets at unopened blooming stage are used. The best optimum combinations of growth regulators were identified as NAA
at 'ARTI-purple', which displayed 47.9% regeneration. However, regeneration of 'ARTI-queen' was the highest as 25.6% at NAA
. There results indicate that there is a difference for the optimum regeneration condition between the mutant varieties derived from one original variety. These results will be useful for construction of efficient regeneration system of diverse chrysanthemum mutants developed by mutation breeding.
A New Screening Method for the Selection of Calla Lily Zantedeschia aethiopica Cultivars Resistant to Calla Lily Soft Rot
Joung, Hyang Young ; Choi, Mok Pil ; Han, Kyung Sook ; Kim, Su ; Goo, Dae Hoe ; Kang, Yun Im ; Choi, Youn Jung ; Park, Sang Kun ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 366~370
DOI : 10.7235/hort.2013.12205
This experiment was carried out to establish the screening methods for the selection of Zantedeschia aethiopica cultivars resistant to calla lily soft rot caused by Pectobacterium carotovorum subsp. carotovorum. A center of leaf and petiole tissues of four Z. aethiopica cultivars were wounded and inoculated with three different inoculum concentrations,
, of EccNHRI-21 isolate. And they were evaluated at 4, 18, and 26 hours after inoculation. The lesion of maceration was developed well in the leaf tissues inoculated with
concentration. And evaluation of resistance in 18 hours after inoculation was correlated with field resistance positively. Using this method, ten Z. aethiopica commercial cultivars and four wild types were screened. 'Crowbrough' and 'White Cutie' were selected as highly resistant genotypes and 'Mont Blanc' and 'Silky White' as resistant genotypes. 'Wedding March' and 'Kiwi Blush' were evaluated as moderate resistant and the others including 'Childsiana' were susceptible. And all of four wild types were evaluated as more than moderate resistant. In spite of control through cultural, biological and chemical methods, the use of resistant cultivars is most efficient to overcome calla lily soft rot. This newly developed screening method was helpful for breeding new varieties resistant to calla lily soft rot.
Resistance Degree of Cucurbits Cultivars to Colletotrichum orbiculare
Shim, Sun-Ah ; Jang, Kyoung Soo ; Choi, Yong Ho ; Kim, Jin-Cheol ; Kim, Heung Tae ; Choi, Gyung Ja ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 371~379
DOI : 10.7235/hort.2013.12163
Anthracnose disease caused by Colletotrichum orbiculare, induces severe damage to cucurbits worldwide. Resistance of 112 commercial cultivars of cucurbits to C. orbiculare was evaluated. Seedlings of each cultivar at 2- to 3-leaf stage were inoculated with C. orbiculare KACC 40809 by spraying spore suspension of the fungus at a concentration of
spores/mL. Among the 36 cultivars of cucumber, 'Asiastrike', 'Tongilbaedadagi', 'Daeseon', 'Cheongrokmatjjang', 'Nokyacheongcheong', and 'Asianogak' were moderately resistant and the others were susceptible. All the tested cultivars of melon (33) and watermelon (4) showed highly susceptible response to C. orbiculare. On the other hand, the squash cultivars (17) represented less susceptibility to the fungus than the other cucurbits. Of the squash cultivars, 'Gammirak' and 'Teotbat' were resistant and 12 cultivars were moderately resistant. Among the rootstocks for cucurbits, ten cultivars including 'JjeuyakaEX', 'Nunbusyeo', 'Union', 'RS111', 'Ganggeuntoza', 'Hwangjaetoza', 'NO.8', 'Shintoza', 'Bulpaetoza', and 'Newtype' showed high resistance to the anthracnose pathogen. From the results, the resistant cultivars could be used as sources of resistance to cucurbits anthracnose (C. orbiculare) in the future breeding programs.
Comparison of Nerve Growth Factor Induction and Anti-aging Activity Using Dried Gastrodia and Fermented Gastrodia Extracts
Choi, Jae-Hong ; Kim, Jeung-Hoan ; Jung, Jae-Youn ; Suh, Sang-Gon ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 380~387
DOI : 10.7235/hort.2013.13013
This study was performed to examine the increasing biological activities of both nerve growth factor induction and anti-aging activity of gastrodia (Gastrodia elata) with fermentation process. Antioxidant activities, taken in the fermenting, were investigated to verify utility value of gastrodia for functional food and cosmetics. Fermented gastrodia extracts showed higher antioxidant activities than dried gastrodia extracts. During the routine check of all the practical use potential as functional food, inhibition effect of angiotensin converting enzyme (ACE) and xanthine oxidase (XOase) was tested among water extracted dried gastrodia (WEDG), water extracted fermented gastrodia (WEFG), 70% ethanol extracted dried gastrodia (EEDG) and 70% ethanol extracted fermented gastrodia (EEFG). DPPH was shown as WEDG =
, WEFG =
, EEDG =
, and EEFG =
. ABTS was shown as WEDG =
, WEFG =
, EEDG =
, and EEFG =
. Therefore, ACE activity was dramatically inhibited by EERG while there was no difference of XOase inhibition between EEFG and EERG. Nerve growth factor (NGF) activity was measured and indicated about 40% increased neurite growth effect. To conclude, biologically active compounds of gastrodia were increased by fermentation process. It seems to be that ferment gastrodia enhance the use ranges from functional food to fuctional cosmetics, and to all processing industry.
A Spray Chrysanthemum, 'Green Candy' with Double Flower Type and Green Petals for Cut Flowers
Lim, Jin Hee ; Shin, Hak Ki ; Park, Sang Kun ; Choi, Seong Yeol ; Lee, Jung-Soo ;
Korean Journal of Horticultural Science and Technology, volume 31, issue 3, 2013, Pages 388~392
DOI : 10.7235/hort.2013.12202
A spray chrysanthemum cultivar 'Green Candy' was released by National Institute of Horticultural & Herbal Science, Rural Development Administration, in 2009. The cross between 'Yoko Ono', a spray chrysanthemum cultivar with light yellowish-green double type, and 'Green Bird', a spray chrysanthemum cultivar with vigorous and green double type, was made in Suwon in 2006. After the evaluation of the characteristics under shade culture in summer and retarding culture in spring and consecutive selection from 2007 to 2009, 'Green Candy' was selected finality. The natural flowering time of 'Green Candy' is October 28th, and it is possible to flower all year-round by shade and light culture. It has double flower type with green petals. The growth of plant is very vigorous and the color of the petals is stable when the variety is cultivated under high temperature conditions in summer season. The diameter of flower is 4.1 cm. The numbers of flower per stem and petals per flower are 12 and 217, respectively. The days for flowering under the short day treatment are about 58 and its vase life is 18.1 days in autumn season. 'Green Candy' was applied as No. 2010-212 on March 5, 2010 for variety protection and the plant variety protection rights have been registered as No. 3633 on August 2, 2011 at the Korea Seed and Variety Service.