Pub Date : 2019-01-01DOI: 10.7740/KJCS.2019.64.3.225
Kyeong-Min Kim, Kyeong-Hoon Kim, Chon-Sick Kang, H. Jeong, Changhyun Choi, Jin Hee Park, J. Son, Jinwoo Yang, YOUNG-JIN Kim, T. Park, M. Kweon
This study was conduct to investigate the effect of mixed seed sowing and flour blending on the uniformity of flour quality of Korean domestic wheat. Two wheat varieties (Keumkang and Baegjoong) were selected for sowing mixed seeds, and their growth characteristics and flour quality were analyzed. Quality of flour blending with the same varieties was also evaluated. The ratios for mixed seed sowing and flour blending were from 0 to 100% with a 10% increase of interval for each treatment. On increasing the portion of Baegjoong in mixed seed sowing, the heading time was a little delayed, however, yield increased. The results of the flour quality showed lower damaged starch content and sodium carbonate SRC (solvent retention capacity) value for Keumkang than for Baegjoong. Protein quantity by protein content and quality by SDSS (Sodium Dodecyle SulfateSedimentation) volume, lactic acid SRC, and mixograph pattern of Keumkang were superior to those of Baegjoong. Compared with mixed seed sowing, overall quality characteristics of flours with different ratios showed predictable and proportional change by flour blending. This demonstrated the successful application of flour blending, compared with mixed seed sowing, for improving the uniformity of flour quality.
{"title":"Analysis of Quality and Processing Suitability of Mixed Seeding and Flour Blending between Wheat Varieties","authors":"Kyeong-Min Kim, Kyeong-Hoon Kim, Chon-Sick Kang, H. Jeong, Changhyun Choi, Jin Hee Park, J. Son, Jinwoo Yang, YOUNG-JIN Kim, T. Park, M. Kweon","doi":"10.7740/KJCS.2019.64.3.225","DOIUrl":"https://doi.org/10.7740/KJCS.2019.64.3.225","url":null,"abstract":"This study was conduct to investigate the effect of mixed seed sowing and flour blending on the uniformity of flour quality of Korean domestic wheat. Two wheat varieties (Keumkang and Baegjoong) were selected for sowing mixed seeds, and their growth characteristics and flour quality were analyzed. Quality of flour blending with the same varieties was also evaluated. The ratios for mixed seed sowing and flour blending were from 0 to 100% with a 10% increase of interval for each treatment. On increasing the portion of Baegjoong in mixed seed sowing, the heading time was a little delayed, however, yield increased. The results of the flour quality showed lower damaged starch content and sodium carbonate SRC (solvent retention capacity) value for Keumkang than for Baegjoong. Protein quantity by protein content and quality by SDSS (Sodium Dodecyle SulfateSedimentation) volume, lactic acid SRC, and mixograph pattern of Keumkang were superior to those of Baegjoong. Compared with mixed seed sowing, overall quality characteristics of flours with different ratios showed predictable and proportional change by flour blending. This demonstrated the successful application of flour blending, compared with mixed seed sowing, for improving the uniformity of flour quality.","PeriodicalId":22717,"journal":{"name":"The Korean Journal of Crop Science","volume":"26 1","pages":"225-233"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79201658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
There is an increasing frequency in the occurrence of abnormal weather phenomena such as sharp increases and decreases in temperature. Under these weather conditions, the heading time of rice changes unexpectedly, which poses problems in agriculture. Therefore, we investigated the effect of temperature on the heading response at different growth stages in rice. During the period from transplanting to heading, the plants were subjected to different temperature treatments, each for a 9-day period, to observe the heading response. For the heading date analysis, “heading date” was defined as the number of days from transplanting to the appearance of the first spikelet. We found that the influence of temperature increased in the order of rooting stage, followed by meiosis, early tillering, spikelet differentiation, and panicle initiation stage in all ecological types and cultivars. In particular, unlike the results reported previously, the effect of temperature on heading during the photo-sensitive period was very small. Meanwhile, the influence of temperature on vegetative growth response at different growth stages was not consistent with heading response. These results can be used as basic data for predicting the variation in heading date owing to temperature variation at each growth stage. In addition, we propose that the concept of day length should be included in determining the influence of temperature on the photo-sensitive period.
{"title":"Temperature-dependent Differences in Heading Response at Different Growth Stages of Rice","authors":"H. Lee, MyoungGoo Choi, Yun-Ho Lee, Woon-Ha Hwang, Jae-Hyeok Jeong, Seo-Yeong Yang, Yeon-Hwa Lim, ChungGen Lee, Kyung-Jin Choi","doi":"10.7740/KJCS.2019.64.3.213","DOIUrl":"https://doi.org/10.7740/KJCS.2019.64.3.213","url":null,"abstract":"There is an increasing frequency in the occurrence of abnormal weather phenomena such as sharp increases and decreases in temperature. Under these weather conditions, the heading time of rice changes unexpectedly, which poses problems in agriculture. Therefore, we investigated the effect of temperature on the heading response at different growth stages in rice. During the period from transplanting to heading, the plants were subjected to different temperature treatments, each for a 9-day period, to observe the heading response. For the heading date analysis, “heading date” was defined as the number of days from transplanting to the appearance of the first spikelet. We found that the influence of temperature increased in the order of rooting stage, followed by meiosis, early tillering, spikelet differentiation, and panicle initiation stage in all ecological types and cultivars. In particular, unlike the results reported previously, the effect of temperature on heading during the photo-sensitive period was very small. Meanwhile, the influence of temperature on vegetative growth response at different growth stages was not consistent with heading response. These results can be used as basic data for predicting the variation in heading date owing to temperature variation at each growth stage. In addition, we propose that the concept of day length should be included in determining the influence of temperature on the photo-sensitive period.","PeriodicalId":22717,"journal":{"name":"The Korean Journal of Crop Science","volume":"157 1","pages":"213-224"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77518022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.7740/KJCS.2019.64.2.109
C. Kang, I. Lee, Suk-Ju Kwon
{"title":"Screening for Fittest Miscellaneous Cereals for Reclaimed Land and Functionality Improvement of Sorghum bicolor Cultivated in Reclaimed Land","authors":"C. Kang, I. Lee, Suk-Ju Kwon","doi":"10.7740/KJCS.2019.64.2.109","DOIUrl":"https://doi.org/10.7740/KJCS.2019.64.2.109","url":null,"abstract":"","PeriodicalId":22717,"journal":{"name":"The Korean Journal of Crop Science","volume":"33 1","pages":"109-126"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84529648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.7740/KJCS.2019.64.4.441
W. Park, Hyeong-un Lee, San Goh, Im-been Lee, S. Nam, M. Chung, Gyeong-Dan Yu, E. Hwang, Seung-yong Lee, Jin Cheon Park, N. Paul, Seon-Kyeong Han
This study was conducted to investigate the crop characteristics of 181 sweetpotato germplasms collected from Korea and overseas. The longest shoot vine length was observed in IT232211 (354.8 cm) and the shortest shoot vine length was observed in IT232185 (32 cm). The maximum numbers of shoot branches and nodes were produced by IT232091 (23.0) and IT232174 (67.8), respectively. Differences in Rapid Visco Analyser profiles were observed for pasting parameters such peak, trough, final, breakdown, and setback viscosities; and pasting temperature. The peak and breakdown viscosities were highest in IT232050 and IT232010, at 338.3 and 207.2 Rapid Visco Unit (RVU), respectively. The trough viscosity was lowest in IT232019 at 103.8 RVU. IT232101 had the highest final viscosity (284.6 RVU), and IT232192 had the highest setback viscosity (81.7 RVU). IT232197 had the highest pasting temperature at 86.8°C, and that of IT232134 was lowest at 72.7°C. To evaluate functional substance content, we analyzed 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity and total polyphenol content. The highest frequency proportion of starch was in the 10%-15% range (50.8% of the plants), followed by the 5%-10% range (38.1% of the germplasms). Sugar content ranged from 13.5 to 33.3% (23.2% on average); the highest frequency proportion of sugar was in the 20%-25% range (56.9% of the germplasms), followed by the 25%-30% range (25.4% of the germplasms). The highest frequency proportion of water was in the 70%-80% range (52.5% of the germplasms), followed by the 60%-70% range (44.2% of the germplasms). Our results provide basic data for the selection of useful resources and for the development of new sweetpotato varieties.
{"title":"Crop characteristics of sweetpotato (Ipomoea batatas L.) germplasms for optimizing the selection of resources.","authors":"W. Park, Hyeong-un Lee, San Goh, Im-been Lee, S. Nam, M. Chung, Gyeong-Dan Yu, E. Hwang, Seung-yong Lee, Jin Cheon Park, N. Paul, Seon-Kyeong Han","doi":"10.7740/KJCS.2019.64.4.441","DOIUrl":"https://doi.org/10.7740/KJCS.2019.64.4.441","url":null,"abstract":"This study was conducted to investigate the crop characteristics of 181 sweetpotato germplasms collected from Korea and overseas. The longest shoot vine length was observed in IT232211 (354.8 cm) and the shortest shoot vine length was observed in IT232185 (32 cm). The maximum numbers of shoot branches and nodes were produced by IT232091 (23.0) and IT232174 (67.8), respectively. Differences in Rapid Visco Analyser profiles were observed for pasting parameters such peak, trough, final, breakdown, and setback viscosities; and pasting temperature. The peak and breakdown viscosities were highest in IT232050 and IT232010, at 338.3 and 207.2 Rapid Visco Unit (RVU), respectively. The trough viscosity was lowest in IT232019 at 103.8 RVU. IT232101 had the highest final viscosity (284.6 RVU), and IT232192 had the highest setback viscosity (81.7 RVU). IT232197 had the highest pasting temperature at 86.8°C, and that of IT232134 was lowest at 72.7°C. To evaluate functional substance content, we analyzed 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity and total polyphenol content. The highest frequency proportion of starch was in the 10%-15% range (50.8% of the plants), followed by the 5%-10% range (38.1% of the germplasms). Sugar content ranged from 13.5 to 33.3% (23.2% on average); the highest frequency proportion of sugar was in the 20%-25% range (56.9% of the germplasms), followed by the 25%-30% range (25.4% of the germplasms). The highest frequency proportion of water was in the 70%-80% range (52.5% of the germplasms), followed by the 60%-70% range (44.2% of the germplasms). Our results provide basic data for the selection of useful resources and for the development of new sweetpotato varieties.","PeriodicalId":22717,"journal":{"name":"The Korean Journal of Crop Science","volume":"40 1","pages":"441-451"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82305803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.7740/KJCS.2019.64.4.406
이재은, 정건호, Sung Kook Kim, 김민태, 신수현, 전원태
The purpose of this research was to analyze the effect of different sowing times on the flowering and maturing of major soybean cultivars by varying day length and temperature in the central plain region. The average of growth period and cumulative temperature in five test cultivars by sowing times were 121 days and 2,972°C on June 1, respectively and gradually decreased to 85 days, 2,042°C, respectively on July 20. Analysis of the flowering response according to the sowing times showed that flowering was greatly influenced by the decrease of photoperiod until the sowing on July 10, and the minimum number of days for flowering were 27 days, 36 days, respectively in early and mid-rate maturing type in the central plain region. Daepung 2 is classified to the same ecotype with Daewonkong, the total number of growing days was not different between two cultivars, but ripening period (R2-R6) was longer by 5 days and yield was higher by 11% in Daepung 2. The maturity rate was also high and safe enough to maintain more than 90% through the entire sowing times. This ecological characteristic can be usefully applied as a section index for breeding environmental stress resistant and high yielding soybean varieties. The yield of 4 domestic cultivars (except TI196944) sowing on July 20 were 85~92% levels compared to sowing on June 20.
{"title":"Effects of Growth Period and Cumulative Temperature on Flowering, Ripening and Yield of Soybean by Sowing Times","authors":"이재은, 정건호, Sung Kook Kim, 김민태, 신수현, 전원태","doi":"10.7740/KJCS.2019.64.4.406","DOIUrl":"https://doi.org/10.7740/KJCS.2019.64.4.406","url":null,"abstract":"The purpose of this research was to analyze the effect of different sowing times on the flowering and maturing of major soybean cultivars by varying day length and temperature in the central plain region. The average of growth period and cumulative temperature in five test cultivars by sowing times were 121 days and 2,972°C on June 1, respectively and gradually decreased to 85 days, 2,042°C, respectively on July 20. Analysis of the flowering response according to the sowing times showed that flowering was greatly influenced by the decrease of photoperiod until the sowing on July 10, and the minimum number of days for flowering were 27 days, 36 days, respectively in early and mid-rate maturing type in the central plain region. Daepung 2 is classified to the same ecotype with Daewonkong, the total number of growing days was not different between two cultivars, but ripening period (R2-R6) was longer by 5 days and yield was higher by 11% in Daepung 2. The maturity rate was also high and safe enough to maintain more than 90% through the entire sowing times. This ecological characteristic can be usefully applied as a section index for breeding environmental stress resistant and high yielding soybean varieties. The yield of 4 domestic cultivars (except TI196944) sowing on July 20 were 85~92% levels compared to sowing on June 20.","PeriodicalId":22717,"journal":{"name":"The Korean Journal of Crop Science","volume":"30 1","pages":"406-413"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88126840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.7740/KJCS.2019.64.1.048
Ji-Young Kim, Phil-Mo Seong, Deog-Bae Lee, N. Chung
{"title":"Growth and Physiological Characteristics in a Halophyte Suaeda glauca under Different NaCl Concentrations","authors":"Ji-Young Kim, Phil-Mo Seong, Deog-Bae Lee, N. Chung","doi":"10.7740/KJCS.2019.64.1.048","DOIUrl":"https://doi.org/10.7740/KJCS.2019.64.1.048","url":null,"abstract":"","PeriodicalId":22717,"journal":{"name":"The Korean Journal of Crop Science","volume":"181 1","pages":"48-54"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73007904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.7740/KJCS.2019.64.2.089
Kim Hongsik, Kang BeomKyu, Seo Jeonghyun, Ha TaeJoung, K. Hyun-tae, Shin SangOuk, Park Changhwan, Kwak DoYeon
The variation of content of 12 soybean seed isoflavone components was determined in the aglycone, glucoside, malonylglucoside and acetylglucoside groups of 44 Korean soybean cultivars grown in 2016 as well as in 2017. The total isoflavone content of the 44 cultivars averaged at 2935.4 μg/g and was in the range of 950.6 to 5226.3 μg/g for two years. Malonylglucoside group averaged at 2437.2 μg/g with the highest proportion of isoflavone composition (83.0%). Significant differences were observed between cultivars, years and their interactions for both the total isoflavone and each composition group contents (P < 0.0001); however, no year-wise differences were observed for daidzein and genistin. The broad-sense heritability (h) within the set of 44 Korean soybean cultivars was as high as 0.93 for the total isoflavone content and was in the range of 0.8– 0.92 for each composition group of isoflavone except for acetylglucoside. The total isoflavone content in cultivar group for soy-sprout was higher (3850.4 μg/g) than that for the other cultivar groups of soy-paste and tofu (3082.8 μg/g), black or green soybean cooked with rice (2345.8 μg/g), and early maturity group (1298.6 μg/g). The total isoflavone content of ‘Sowonkong’, a soybean cultivar for soy-sprout, was the highest (5226.3 μg/g). In the cultivar group for soy-paste and tofu, the average isoflavone contents of ‘Daepung’, ‘Daepung2ho’, ‘Saegeum’, ‘Uram’, and ‘Jinpung’ were higher than 4000 μg/g. With the exception of small seeded cultivars with low isoflavone contents such as ‘Sohwang’ and ‘Socheongja’, the seed size and total isoflavone content were significantly negatively correlated in 2016 and 2017, respectively (r = -0.47 and -0.49). The number of days of growth from flowering to maturity did not affect the variations observed in isoflavone content.
{"title":"Quantitative Variation of Total Seed Isoflavone and its Compositions in Korean Soybean Cultivars (Glycine max (L.) Merr.)","authors":"Kim Hongsik, Kang BeomKyu, Seo Jeonghyun, Ha TaeJoung, K. Hyun-tae, Shin SangOuk, Park Changhwan, Kwak DoYeon","doi":"10.7740/KJCS.2019.64.2.089","DOIUrl":"https://doi.org/10.7740/KJCS.2019.64.2.089","url":null,"abstract":"The variation of content of 12 soybean seed isoflavone components was determined in the aglycone, glucoside, malonylglucoside and acetylglucoside groups of 44 Korean soybean cultivars grown in 2016 as well as in 2017. The total isoflavone content of the 44 cultivars averaged at 2935.4 μg/g and was in the range of 950.6 to 5226.3 μg/g for two years. Malonylglucoside group averaged at 2437.2 μg/g with the highest proportion of isoflavone composition (83.0%). Significant differences were observed between cultivars, years and their interactions for both the total isoflavone and each composition group contents (P < 0.0001); however, no year-wise differences were observed for daidzein and genistin. The broad-sense heritability (h) within the set of 44 Korean soybean cultivars was as high as 0.93 for the total isoflavone content and was in the range of 0.8– 0.92 for each composition group of isoflavone except for acetylglucoside. The total isoflavone content in cultivar group for soy-sprout was higher (3850.4 μg/g) than that for the other cultivar groups of soy-paste and tofu (3082.8 μg/g), black or green soybean cooked with rice (2345.8 μg/g), and early maturity group (1298.6 μg/g). The total isoflavone content of ‘Sowonkong’, a soybean cultivar for soy-sprout, was the highest (5226.3 μg/g). In the cultivar group for soy-paste and tofu, the average isoflavone contents of ‘Daepung’, ‘Daepung2ho’, ‘Saegeum’, ‘Uram’, and ‘Jinpung’ were higher than 4000 μg/g. With the exception of small seeded cultivars with low isoflavone contents such as ‘Sohwang’ and ‘Socheongja’, the seed size and total isoflavone content were significantly negatively correlated in 2016 and 2017, respectively (r = -0.47 and -0.49). The number of days of growth from flowering to maturity did not affect the variations observed in isoflavone content.","PeriodicalId":22717,"journal":{"name":"The Korean Journal of Crop Science","volume":"29 1","pages":"89-101"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75167662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.7740/KJCS.2019.64.4.414
Seo Jeonghyun, Kang BeomKyu, K. Hyun-tae, Kim Hongsik, Choi Mansoo, O. JaeHyeon, Shin SangOuk, Baek InYoul, Kwak DoYeon
Pod shattering during the maturing stage causes a serious yield loss in soybean. It is the main limiting factor of soybean cultivation and mechanization. It is important to develop varieties suitable for mechanical harvesting and to develop energy-efficient agricultural machinery to save labor and costs. ‘Daewonkong,’ developed by the National Institute of Crop Science (NICS) in 1997, is an elite cultivar that occupies more than 80% of the soybean cultivation area in Korea because of its strong tolerance to pod shattering. The objectives of this study were to investigate the variation in pod shattering degree in a RIL population developed from a ‘Daewonkong’ parent and to select promising lines with pod shattering tolerance. ‘Daewonkong’ demonstrated a high level of tolerance to pod shattering compared to the ‘Tawonkong’ and ‘Saeolkong’ varieties, with no shattered pods after 72 hours of drying. Screening of pod shattering showed a clear distinction between the tolerant and susceptible varieties. Also, the distribution of shattering pod ratio in the two populations showed a similar pattern for three years. The promising lines with pod shattering tolerance included 27 lines in the ‘Daewonkong’בTawonkong’ population and 21 lines in the ‘Daewonkong’בSaeolkong’ population. The promising lines are expected to be widely used as breeding parents for creating soybean cultivars with pod shattering tolerance.
{"title":"Variation in Pod Shattering in a RIL Population and Selection for Pod Shattering Tolerance in Soybean [Glycine max (L.) Merr]","authors":"Seo Jeonghyun, Kang BeomKyu, K. Hyun-tae, Kim Hongsik, Choi Mansoo, O. JaeHyeon, Shin SangOuk, Baek InYoul, Kwak DoYeon","doi":"10.7740/KJCS.2019.64.4.414","DOIUrl":"https://doi.org/10.7740/KJCS.2019.64.4.414","url":null,"abstract":"Pod shattering during the maturing stage causes a serious yield loss in soybean. It is the main limiting factor of soybean cultivation and mechanization. It is important to develop varieties suitable for mechanical harvesting and to develop energy-efficient agricultural machinery to save labor and costs. ‘Daewonkong,’ developed by the National Institute of Crop Science (NICS) in 1997, is an elite cultivar that occupies more than 80% of the soybean cultivation area in Korea because of its strong tolerance to pod shattering. The objectives of this study were to investigate the variation in pod shattering degree in a RIL population developed from a ‘Daewonkong’ parent and to select promising lines with pod shattering tolerance. ‘Daewonkong’ demonstrated a high level of tolerance to pod shattering compared to the ‘Tawonkong’ and ‘Saeolkong’ varieties, with no shattered pods after 72 hours of drying. Screening of pod shattering showed a clear distinction between the tolerant and susceptible varieties. Also, the distribution of shattering pod ratio in the two populations showed a similar pattern for three years. The promising lines with pod shattering tolerance included 27 lines in the ‘Daewonkong’בTawonkong’ population and 21 lines in the ‘Daewonkong’בSaeolkong’ population. The promising lines are expected to be widely used as breeding parents for creating soybean cultivars with pod shattering tolerance.","PeriodicalId":22717,"journal":{"name":"The Korean Journal of Crop Science","volume":"64 1","pages":"414-421"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77486255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.7740/kjcs.2019.64.3.204
T. Won, Byoung-rourl Choi, Kwang-Rae Cho, G. Lim, Jeong-Hyun Chi, S. Woo
The optimal application rate of a controlled release fertilizer (CRF) on the growth, yield, and seeding time of rice grown on seedling trays was investigated. The experimental field was located at 37°22'10''N latitude and 127°03'85''E longitude in Hwaseong, Gyeonggi-do, Republic of Korea. The soil in the paddy field was a clay loam. The CRF used in the experiment contained 300 g kg of nitrogen, 60 g kg of phosphate, and 60 g kg of potassium, respectively. The CRF was applied at the rate of 0, 200, 300, 400, 500, and 600 grams on rice seedling tray compared with the field application based on soil testing (control), respectively. The CRF can be applied as single application(which can replace basal fertilizer application and two top dressing application) directly to the seedling tray, and showed the minimum release at the seedling period. Considering the plant growth, nitrogen use efficency and yield of rice, the optimal application rate of developed CRF was 500 g per seedling tray and the yield of rice at this application rate was 4.92~5.04 Mg ha-1. The regression formula between the rice yield and application rates of CRF was as follows ; Y=0.0002χ+0.0963χ+411.6(R : 0.9922) in 2010 and Y=8E-6χ+0.2723χ+344.04(R:0.9864) in 2011, Y : Rice yield (Mg ha), χ : Application rate (grams) of controlled release fertilizer . The optimum application rates of CRF per rice seedling tray by regression formula was 498 grams in 2010 and 513 grams in 2011.
研究了控释肥(CRF)的最佳施用量对水稻盘栽生长、产量和播期的影响。试验田位于韩国京畿道华城北纬37°22′10”，东经127°03′85”。稻田里的土是粘土壤土。实验中使用的CRF分别含有300 g kg氮、60 g kg磷酸盐和60 g kg钾。分别以0、200、300、400、500和600 g的剂量在稻盘上施用CRF，并与土壤试验(对照)的田间施用进行比较。CRF可单次施用(可代替基肥和两次追肥)直接施用于育苗盘，且苗期释放量最小。考虑植株生长、氮素利用效率和水稻产量，发育后的CRF最佳施用量为500 g /盘，该施用量下水稻产量为4.92~5.04 Mg ha-1。水稻产量与CRF施用量的回归公式为:2010年Y=0.0002χ+0.0963χ+411.6(R: 0.9922)， 2011年Y=8E-6χ+0.2723χ+344.04(R:0.9864)， Y:水稻产量(Mg ha)， χ:控释肥施用量(g)。通过回归公式计算，2010年和2011年每盘水稻最适施CRF量分别为498 g和513 g。
{"title":"Application Effect of the Controlled Release Fertilizer Applied on Seedling Tray at Seeding Time in Rice","authors":"T. Won, Byoung-rourl Choi, Kwang-Rae Cho, G. Lim, Jeong-Hyun Chi, S. Woo","doi":"10.7740/kjcs.2019.64.3.204","DOIUrl":"https://doi.org/10.7740/kjcs.2019.64.3.204","url":null,"abstract":"The optimal application rate of a controlled release fertilizer (CRF) on the growth, yield, and seeding time of rice grown on seedling trays was investigated. The experimental field was located at 37°22'10''N latitude and 127°03'85''E longitude in Hwaseong, Gyeonggi-do, Republic of Korea. The soil in the paddy field was a clay loam. The CRF used in the experiment contained 300 g kg of nitrogen, 60 g kg of phosphate, and 60 g kg of potassium, respectively. The CRF was applied at the rate of 0, 200, 300, 400, 500, and 600 grams on rice seedling tray compared with the field application based on soil testing (control), respectively. The CRF can be applied as single application(which can replace basal fertilizer application and two top dressing application) directly to the seedling tray, and showed the minimum release at the seedling period. Considering the plant growth, nitrogen use efficency and yield of rice, the optimal application rate of developed CRF was 500 g per seedling tray and the yield of rice at this application rate was 4.92~5.04 Mg ha-1. The regression formula between the rice yield and application rates of CRF was as follows ; Y=0.0002χ+0.0963χ+411.6(R : 0.9922) in 2010 and Y=8E-6χ+0.2723χ+344.04(R:0.9864) in 2011, Y : Rice yield (Mg ha), χ : Application rate (grams) of controlled release fertilizer . The optimum application rates of CRF per rice seedling tray by regression formula was 498 grams in 2010 and 513 grams in 2011.","PeriodicalId":22717,"journal":{"name":"The Korean Journal of Crop Science","volume":"17 1","pages":"204-212"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74470739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.7740/KJCS.2019.64.2.137
J. Choi, D. Kwak, Myeongeun Choe, S. Song, Chang-Hwan Park, J. Ko
{"title":"Nutritional Compositions of Varieties of Foxtail millet and Proso millet Developed in Korea","authors":"J. Choi, D. Kwak, Myeongeun Choe, S. Song, Chang-Hwan Park, J. Ko","doi":"10.7740/KJCS.2019.64.2.137","DOIUrl":"https://doi.org/10.7740/KJCS.2019.64.2.137","url":null,"abstract":"","PeriodicalId":22717,"journal":{"name":"The Korean Journal of Crop Science","volume":"21 1","pages":"137-143"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75929059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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