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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Korean Journal of Crop Science
Journal Basic Information
Journal DOI :
The Korean Society of Crop Science
Editor in Chief :
Volume & Issues
Volume 54, Issue 4 - Dec 2009
Volume 54, Issue 3 - Sep 2009
Volume 54, Issue 2 - Jun 2009
Volume 54, Issue sup1 - Apr 2009
Volume 54, Issue 1 - Mar 2009
Selecting the target year
Viviparous Germination Characteristics of Rice Varieties Adaptable to Central Region of Korea
Park, Jung-Soo ; Kim, Hee-Dong ;
Korean Journal of Crop Science, volume 54, issue 3, 2009, Pages 241~248
Varietal differences on viviparous germination of newly released rice varieties were investigated to provide selection criteria for the high quality rice production. Laboratory and field tests were conducted on 20 different rice varieties in 2007. Varieties which showed below 10% of viviparous germination at the laboratory test were Odaebyo, Hitomebore, Koshihikari, Hwasungbyo, Hopyongbyo, Ilpumbyo, Chuchungbyo when they were treated 35 days after heading (DAH) at the temperature of 25/
(day/night) for 8 days, and were Hitomebore, Koshihikari, Hwasungbyo, Hopyongbyo under diurnal temperature of 30/
(day/night). At the field test with artificial lodging, there were 12 varieties including Hopyongbyo, Hitomebore that showed lower viviparous germination below 10% when they were treated at 35DAH and measured 8 days after lodging treatment but there was only four varieties (Ilpumbyo, Hwasungbyo, Chuchungbyo, Hopyongbyo) when lodging treatment was made at the 45DAH. Among newly released rice varieties, viviparous germination rate of Hopyongbyo was below 10% and was 11 to 20% at Hithomebore and Samgwangbyo, 21 to 40% at Koshihikari, Odae-No.1, Josaengheukchalbyo, Chonghobyo, 41 and 60% at Suean-No.1, Whongwangbyo, Bosukchalbyo, and 61 to 90% at Gopumbyo when it was examined 8 days after lodging treatment at 45DAH.
Association of Puroindolines Genotypes and Grain Properties, Milling Performances and Physical Properties of Flour in Korean Wheats
Park, Chul-Soo ; Kang, Chon-Sik ; Park, Jong-Chul ; Jung, Youn-Joo ; Cheong, Young-Keun ; Woo, Sun-Hee ;
Korean Journal of Crop Science, volume 54, issue 3, 2009, Pages 249~259
Puroindoline alleles, grain characteristics, milling performances and physical properties of flour of 22 Korean wheat cultivars were evaluated to determine the influence of puroindolines genotypes on grain and flour characteristics and to provide useful information for improving milling and end-use quality in Korean wheat breeding programs. Nine Korean wheat cultivars carried with Pina-D1a/Pinb-D1a, 11 cultivars had Pina-D1a/Pinb-D1b and 2 cultivars were Pina-D1b/Pinb-D1a. Korean wheats carrying with Pina-D1a/Pinb-D1a genotypes showed lower test weight and thousand kernel weight, area and roundness of grain and hardness index in grain characteristics, lower flour yield and higher proportion of break flour in milling performances and lower average particle size of flour, ash and damaged starch content, water retention capacity, yellowness-blueness and higher lightness of flour than wheats with Pina-D1a/Pinb-D1b or Pina-D1b/Pina-D1a genotypes. Pina-D1a/Pinb-D1b genotypes showed lower 1000-kernel weight, grain area, higher average of particle size of flour, higher ash and damaged starch content than Pina-D1b/Pina-D1a genotypes. There was no difference in hardness index of grain, milling performances, flour color between Pina-D1a/Pinb-D1b and Pina-D1b/Pina-D1a genotypes. These results could present the information to improve milling quality and physical properties of flour in Korean wheat breeding programs.
An Optimum Seed Planting Time of Chinese Milk Vetch (Astragalus sinicus L.) for Stable Seedling Establishment and Dry Matter Production in Paddy Field
Kim, Sang-Yeol ; Oh, Seong-Hwan ; Choi, Kyung-Jin ; Kim, Jeong-Il ; Park, Sung-Tae ; Yeo, Un-Sang ; Kang, Hang-Won ;
Korean Journal of Crop Science, volume 54, issue 3, 2009, Pages 260~264
Sufficient seedling establishment of Chinese milk vetch (CMV) is the most important factor in the CMV cultivation. In order to obtain sufficient seedling stand, CMV seed should be planted at right seed planting date. An optimum CMV seed planting time for stable seedling establishment was determined based on the final water drainage time for rice harvest in fall. Five planting times from 10 days before water drainage (DBWD) to 15 days after water drainage (DAWD) at five day interval were evaluated during the period of 2006-2007 and 2007-2008 and the optimum CMV seed planting time was determined based on seedling stand, winter survival rate, and dry matter production. CMV seedling stand before winter was high with
regardless of seed planting times but after overwintering, it was greater in seed planting date between 5 DBWD to 5 DAWD than that of 10 to 15 DAWD treatments. Winter survival rate, dry matter production and seed production yield also showed similar trend to the seedling establishment. On the other hand, when CMV seeds were sowed early at 10 DBWD, seedling stand and winter survival rate were lower than that of 5 DBWD to 5 DAWD. This result indicates that an optimum CMV seed planting time based on the final water drainage could be between 5 DBWD (September 20) to 5 DAWD (September 30).
Enhancement of Biomass Production in Chinese Milk Vetch (Astragalus sinicus L.) by Controlling Alopecurus aequalis with Sethoxydim under Poor CMV Seedling Stand
Kim, Sang-Yeol ; Oh, Seong-Hwan ; Hwang, Woon-Ha ; Choi, Kyung-Jin ; Park, Sung-Tae ; Kim, Jeong-Il ; Yeo, Un-Sang ; Kang, Hang-Won ;
Korean Journal of Crop Science, volume 54, issue 3, 2009, Pages 265~269
Technology development for sufficient dry matter production of Chinese milk vetch (CMV) is most important in CMV-rice cultivation system in order to provide sufficient nutrients to rice plants. However, when the CMV plants are dominated by the weed, especially Alopecurus aequalis, the CMV growth could be reduced due to light and nutrient competition. In addition, A. aequalis is potential host of the rice dwarf virus disease. Therefore, control of A. aequalis is necessary to enhance the biomass production of CMV plants when CMV stands are insufficient. The use of chemical like sethoxydim (20%, ai) showed the highest control rate of 84% at early stage and was reduced as application was delayed. A. aequalis control did not change the CMV seedling stand before and after herbicide treatment and the reseeding stand in fall was rather increased 2.2 to 2.6 times. On the other hand, in untreated control, the CMV stand at May 15 and reseeding stand in fall was significantly reduced as compared with the before herbicide treatment. Control of A. aequalis increased the CMV dry matter production by 164% for 50% CMV coverage rate and 63% for 25% CMV coverage rate. This is equivalent to
/10a which is greater than the recommended nitrogen rate of 9kg/10a. The result indicates that the control of A. aequalis is an efficient way to enhance dry matter production in CMV-rice cultivation system especially when CMV stand is poor.
Variation of Seed Germination Among Cultivated and Weedy Types of Perilla Crop in Korea and Japan
Jung, Ji-Na ; Yu, Chang-Yeon ; Kim, Jong-Hwa ; Lee, Ju-Kyong ;
Korean Journal of Crop Science, volume 54, issue 3, 2009, Pages 270~278
To understand the seed characteristics among cultivated types of Perilla crop and their weedy types in Korea and Japan, we studied the variation of 69 accessions by examining weight of 100 seeds, hardness of seed, germination percent and germination energy. The survey of the weight of 100 seeds and hardness of seed, clarified as follows; cultivated type of var. frutescens showed a range of 0.177 to 0.402 g with weight of 100 seeds, and most accessions of cultivated type of var. frutescens have soft seeds, except for several accessions, which have hard seeds, whereas weedy type of var. frutescens showed a range of 0.045 to 0.172 g with weight of 100 seeds, and has only hard seeds. While cultivated type of var. crispa showed a range of 0.054 to 0.101 g with weight of 100 seeds, and has only hard seeds. The weedy type of var. crispa showed a range of 0.059 to 0.135 g with weight of 100 seeds, and has only hard seeds. According to the result of germination tests, although the most accessions of cultivated and weedy types of var. frutescens and cultivated and weedy types of var. crispa showed below 50% germination rate at the first germination test, but some accessions of cultivated type of var. frutescens showed above 50% germination. While, in the second or third germination tests, most accessions of cultivated types of Perilla crop and their weedy types showed above 50% germination rates, except for several accessions. As a result, in this study, the average of germination percent and germination energy among accessions of cultivated types of Perilla crop and their weedy types showed respectively the highest value at the third germination test, but showed the lowest value at the first germination test. In addition, the germination percent and germination energy showed much higher in the room temperature condition than in
constant-temperature condition. Although our results may be required much clearly survey in the further study, this current results will be help for our understanding the variation of seed characteristics among cultivated types of Perilla crop and their weedy types in Korea and Japan.
Changes in Feed Value of Barley and Pea by Different Seeding Rates and Cutting Dates in Mixed Sowing Cultivation
Oh, Tae-Seok ; Kim, Chang-Ho ; Lee, Hyo-Won ;
Korean Journal of Crop Science, volume 54, issue 3, 2009, Pages 279~286
This study carried out to find out feed value of barley plus pea mixture with different ratio and cutting date to got basic information when introduced the mixture as new cropping system in middle part of Korean peninsular. Dry matter (DM) yield increased as barley seeding rate was higher and showed the highest yield in the plots with barley 85% plus 15% ratio when harvested on May 16. There was no different in crude protein, available protein and digestible protein cutting on April 25 in every mixture, but the content increased with higher pea mixture rate after May 2. The content of acid detergent fiber (ADF) and neutral detergent fiber (NDF) increase coincided with higher barley rate and late cutting dates. But relative feed value (RFV) resulted in opposite trend. Higher pea ratio influenced increased content of total digestible nuterients (TDN), but decreased before May 9 cutting and increased after the next cutting regime. There was no statistical difference in P and Mg between sowing rate, but Ca increased at higher pea ratio and P, Ca, K decreased in all plots as harvests were delayed. The content of estimated net energy (ENE), net energy maintenance (NEM) and net energy gain (NEG) significantly increased with higher pea rate and earlier cutting. But net energy lactation (NEL) was no significant differences between seeding rates and cutting dates. In conclusion, mineral yield such as P, Ca, K and Mg showed the highest yield at barley plus pea ratio of 75 : 25 and energy yield of ENE, NEL, NEM, NEG and TDN was the highest at 85 to 15 mixture plots and DM yield, TDN yield, mineral yield such as P, Ca, K and Mg and energy yield of ENE, NEL, NEM, NEG were the highest on each treatment cutting on May 16.
Extracting Conditions for Promoting Ginsenoside Contents and Taste of Red Ginseng Water Extract
Li, Xiangguo ; Han, Jin-Soo ; Park, Yong-Jun ; Kang, Sun-Joo ; Kim, Jung-Sun ; Nam, Ki-Yeul ; Lee, Ki-Teak ; Choi, Jae-Eul ;
Korean Journal of Crop Science, volume 54, issue 3, 2009, Pages 287~293
In this study, red ginseng extract solutions were analyzed to set up the functional saponin content and quality optimization condition. The highest saponin content among the total red ginseng extracts was 64.6 mg / 100 ml which was extracted at
for 18 hours. In addition, the saponin content decreased according to the increased extraction temperature and time. The highest total content of
and Re was 11.8 mg / 100 ml at
for 12 hours which decreased according to the increased extraction temperature and time. The prosapogenin content of red ginseng extract was increased at
while the content decreased at
, in which the highest prosapogenin content was 34.9 mg / 100 ml at
for 24 hours. The total sugar content and cloudness were increased according to the increased extraction time at
, but pH and hue value were decreased according to the increased extracted time. The highest sweetness content was 4.0% which was found at
for 24 hours extract. Therefore, the most appropriate red ginseng extracting method was lower the temperature for saponin content at first time in combination with raise the temperature for taste at second time.
Effects of Wick Number on Growth and Yield of Seed Potatoes Grown in a Wick-based Hydroponics
Kim, Chan-Woo ; Kang, Bong-Kyoon ; Song, Chagn-Khil ; Park, Sung-Jun ; Kang, Young-Kil ;
Korean Journal of Crop Science, volume 54, issue 3, 2009, Pages 294~298
A glasshous experiment was carried out in 2002 to evaluate growth differences between two wick types, and to determine the optimum number of wicks in a wick-based hydroponics for production of 'Dejima' seed potatoes (Solanum tuberosum L.). The six minitubers (
/tuber) produced through aeroponics were planted in a polystyrene box (51 cm long
31 cm wide
20 cm high) containing growth medium (perlite+peatmoss 1:2, v/v mixtures). Before the boxes were filled with the medium, 6 wicks per box were vertically and 2 to 10 wicks were horizontally installed, respectively, at the bottom of the boxes through holes. Comparing with 6 vertical wick treatment, 6 horizontal wick treatment increased the number of tubers per plant, but decreased average tuber weight. Yield of tubers greater than 5 g (seed potatoes) was not significantly affected by wick type. As the number of the horizontal wicks per box was increased from 2 to 6, the number of seed potatoes increased from 2.8 to 8.0/plant and then leveled off. Average tuber weight increased with increasing the number of the wicks up to 8 and then leveled off. As the number of the wicks per box was increased from 2 to 6, seed potato yield increased from 1.81 to 6.59 kg/
and then slowly increased up to 10 wicks per box, reaching 12.9 kg/
. The results indicate that installing 8 wicks per box (
) horizontally for the wick culture system in production of 'Dejima' seed potatoes is beneficial considering seed potato yield, cost of wicks, and convenient filling with medium.
Inhibition of SKTI Synthesis in Agrobacterium rhizogenes-induced Hairy Root Reduces the Number of Nodule in Soybean
Kim, Sun-Hyung ; Lim, Chae-Woo ; Park, Ji-Young ; Hwang, Cheol-Ho ;
Korean Journal of Crop Science, volume 54, issue 3, 2009, Pages 299~306
In nitrogen-limited conditions, rhizobia lead to formation of nitrogen-fixing nodules on the roots of leguminous plants. The process of nodulation is autoregulated by pre-existing nodules in the same root system. The altered profile of sap proteins by inoculation with B. japonicum may indicate presence of a signal responsible for autoregulation transferred through stem. The 20 kDa protein enhanced by innoculation significantly decreased in intensity from 2.5 to 7 days after inoculation (DAI). However 6 kDa protein did increase during such a transition period. Western blot analysis showed that both 20 kDa and 6 kDa were cross-reacted with the SKTI antiserum. This suggests that SKTI may be involved in soybean nodulation by specific induction and degradation in stem sap during early stage of nodulation. RNAi technique and Agrobacterium rhizogenes-mediated transformation were applied to investigate the function of SKTI in nodulation. We have found that the number of rhizobium-induced nodule was much less in SKTIi-silenced hairy roots than the non-silenced. Indeed the quantitative RT-PCR showed that the expression level of SKTI gene was reduced over 40% in the transgenic hairy roots compared to the non-transgenic. It appears that the observed early induction of SKTI and degradation into small peptide in a specific time manner may be involved in autoregulation of nodulation in soybean and the specific mechanism of such regulation remains to be investigated.
Influence of Antibiotics on Shoot Regeneration and Agrobacteium Suppression Using Cotyledonary Node in Korean Soybean Cultivars
Kim, Kyung-Hee ; Lee, Jae-Eun ; Kwon, Young-Up ; Lee, Byung-Moo ;
Korean Journal of Crop Science, volume 54, issue 3, 2009, Pages 307~313
Mature dry seeds of Korean cultivars, Daepungkong, Muhankong, Myeongjunamulkong, Somyeongkong, Sowonkong, Jinpumkong, and Pungsannamulkong were used. The influence of antibiotics on elimination of Agrobacterium growth and shoot regeneration was estimated with cotyledonary node. Cefotaxime and timentin at the concentration of 250 and 500 mg/l suppressed Agrobacterium, especially cefotaxime was an efficient antibiotic to suppress Agrobacterium in all cultivars. While carbenicillin and timentin at the concentration of 50 and 100 mg/l were not sufficient to control the development of Agrobacterium, respectively. Cefotaxime and timentin represented high shoot formation rates compared with carbenicillin. Carbenicillin at low concentrations did not effectively suppress Agrobacterium and also had no effect on shoot development. Cefotaxime at the concentration of 250 mg/l showed maximum frequency of shoot regeneration in cvs. Somyeongkong and Sowonkong. Furthermore, on medium containing cefotaxime, shoot was more quickly formed than the other antibiotics. The use of cefotaxime was very useful for elimination of Agrobacterium growth with cotyledonary node of Korean soybean cultivars.
Volatile Flavor Components in Soybean Sprouts
Kim, Yong-Ho ; Lee, Kyong-Ae ; Kim, Hee-Seon ;
Korean Journal of Crop Science, volume 54, issue 3, 2009, Pages 314~319
The identification of volatile constituents in foods is important in creating flavor compounds to improve the flavor of foods. This study was conducted to identify the flavor compounds in soybean sprouts cultivated with 4 different types of soybean seeds. A total of 52 flavor compounds were identified and composed mainly of alcohols (16), aldehydes (17), ketones (10), acids (2), furans (2), and miscellaneous compounds (5). Sprouts cultivated with Dawonkong and Orialtae showed 46 flavor compounds whereas Pungsannamulkong and Nokchaekong was 49 and 50. In total flavor compounds contents, Orialtae was the highest (19.3 mg/kg RC) and followed by Pungsannamulkong (15.83 mg/kg RC), Dawonkong (13.2 mg/kg RC), and Nokchaekong (11.3 mg/kg RC) in that order. Two groups including alcohols and aldehydes were detected high amounts in which their ratio were analyzed 32% and 51% in total flavor contents, respectively. It may be responsible for flavor in soybean sprouts. In case each flavor compound content, 2-hydroxybenzaldehyde was detected the major compound and hexanol, 1-octen-3-ol, and hexanal that the main compounds in lipid oxidation of soybean products were identified the main volatile flavor compounds in soybean sprouts.
Effects of Scarification and Water Soaking Treatment on Germination of Hard-Seeded Legumes
Kim, Seok-Hyeon ; Chang, Mi-Ha ; Chung, Jong-Il ; Shim, Sang-In ;
Korean Journal of Crop Science, volume 54, issue 3, 2009, Pages 320~326
The crops showing hard seed character have high seed viability after seed storage for long period. The low germination rate due to hard seed coat, however, cause a problem of low seedling establishment in field condition. Three legumes used in the experiment, lablab bean (Dolichos lablab L.), asparagus bean (Vigna sesquipedalis L. Fruwirth), and soybean (Glycine max L. Merr.), showed low germination rate (26, 17, and 5%, respectively) due to thick and hard seed coat. In this study artificial treatment for breaking dormancy was tested in hard seeds. The effect of proper treatment was various depending on species. The germination rate of lablab bean was highly improved up to 94% by soaking into water for 24 hours. In the case of asparagus bean, the rate was increased up to 90% by soaking for eight hours near boiling water until it cools. The germination rate of small hard seed soybean was increase to 96% by soaking into concentrated sulfuric acid for 10 minutes. Ultrastructural change revealed by scanning electron microscope (SEM) reflects that the structure of micropyle was changed and water uptake was facilitated with all treatments tested in the experiment. Especially, sulfuric acid treatment resulted in the degradation of micropylar tissue. These results demonstrate that the artificial treatment including sulfuric acid and (hot) water soaking treatment for promoting water uptake can be applied to improve seed germination in legume seed with thick and hard seed coat.
Effects of Seeding Rate on Hairy vetch (Vicia villosa) - Rye (Secale cereale) Mixtures for Green Manure Production in Upland Soil
Jeon, Weon-Tai ; Seong, Ki-Yeong ; Lee, Jong-Ki ; Kim, Min-Tae ; Cho, Hyun-Suk ;
Korean Journal of Crop Science, volume 54, issue 3, 2009, Pages 327~331
Korean government has promoted the policy of chemical fertilizer reduction by 40% reduction from 2003 to 2013. Hairy vetch (Vicia villosa Roth) fixes nitrogen from the atmosphere and rye (Secale cerale L.) accumulates soil nitrogen to reduce potential nitrogen loss. The objective of this research was to identify optimum seeding rates of hairy vetch-rye mixtures in the central regions of Korea. The experiment of mixture rate was carried out for maximum production in 2006 and 2007. The best seeding rate mixture for maximum biomass production was 6.75 kg hairy vetch and 5 kg rye per 10a. Pure hairy vetch and rye were used as control. The nitrogen production of mixture treatments were higher than pure rye. The hairy vetch and rye mixture can scavenge potentially leachable nitrogen, while maintaining soil fertility by adding fixed nitrogen to the cropping system.
A Genome-wide Approach for Functional Analysis Using Rice Mutant
Yim, Won-Cheol ; Kim, Dong-Sub ; Moon, Jun-Cheol ; Jang, Cheol-Seong ; Lee, Byung-Moo ;
Korean Journal of Crop Science, volume 54, issue 3, 2009, Pages 332~338
Rapid extension of genomic database leads to the remarkable advance of functional genomics. This study proposes a novel methodology of functional analysis using 5-methyltrytophan (5 MT) mutant together with their 2-DE analysis and public microarray database. A total of 24 proteins was changed in 5 MT mutant and four remarkably different expressed proteins were identified. Among them, three spots were converted to Affymetrix probe. A total of 155 microarray samples from Gene Expression Omnibus (GEO) in NCBI was retrieved and followed by constructing gene co-expression networks over a broad range of biological issues through Self-Organising Tree Algorithm. Three co-expressing gene clusters were retrieved and each functional categorization with differential expression pattern was exhibited from 5 MT resistance mutant rice. It was indicated new co-expression networks in the mutant. This study suggests that on investigating possibility which correspond 2-DE to microarray database with their full potential.