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아시아 및 아프리카 원산 참깨(Sesame indicum L.) 유전자원의 농업형질과 리그난 함량 평가
이수경,성정숙,이기안,유은애,황소정,리웨이란,양태진,Sookyeong Lee,Jungsook Sung,Gi-An Lee,Eunae Yoo,So Jeong Hwang,Weilan Li,Tae-Jin Yang 한국자원식물학회 2023 한국자원식물학회지 Vol.36 No.4
Sesame (Sesamum indicum L.) is an ancient oilseed crop, which is usually cultivated for its seeds. Sesame breeding aims to achieve high seed yield and quality, along with resistance to biotic or abiotic stresses. It is estimated that sesame is originated from Asia or Africa continent. In this study, we characterized 10 agronomic traits and evaluated lignan contents in 165 sesame germplasm originated from Asia or Africa, to select high-yield or high-lignan content accessions. Sesame germplasm showed diverse phenotypes and highly variable lignan contents (sesamin: 0.5-12.6 mg/g, sesamolin: 0.1-3.5 mg/g, lignan: 1.1-16.1 mg/g). Based on originated continent, there are significant difference in agronomic traits, but no in lignan content. Correlation analysis revealed that yield-related agronomic traits were negatively related with lignan contents. Also, PCA analysis showed that most agronomic traits and lignan contents were principal components explaining diversity of whole sesame germplasm. Sesame germplasm was clustered into three groups based on agronomic traits and lignan contents. Finally, we selected high-yield (IT29416, IT167042, K276848, K276849) and high-lignan candidate accessions (IT169254, IT170031, IT169250, IT154876, IT170034), respectively. These accessions are expected to be valuable resources for breeding of high-yield and high-lignan contents functional cultivars.
이정로 ( Jung Ro Lee ),백형진 ( Hyung Jin Baek ),최유미 ( Yu Mi Choi ),이석영 ( Sok Young Lee ),이기안 ( Gi An Lee ),정연주 ( Yeon Ju Jung ),김정곤 ( Chung Kon Kim ),이명철 ( Myung Chul Lee ) 한국국제농업개발학회 2011 韓國國際農業開發學會誌 Vol.23 No.5
China is a one of the largest agricultural countries in the world. China consumes around 12.5 billion kilograms of seeds each year. Suchhuge demand for seeds has made the Chinese seed market more and more attractive for investment. Through analysis on the present situation and existing problems of the seed industry in China and based on the current Chinese seed industry development, some future prospects for investments are indicated. This investigation was carried out to propose the appropriate strategies on the development of the Korea seed industry as it considers its entry into the China seed market as a new growth engine in the agricultural sector. The basic law regulating the Chinese seed industry is the PRC Seed Law that generally refers to the protection of germplasm resources, verification of varieties, seed quality issues, the import and export of seeds, seed administrative management, and various rights and obligations. The regulations were aimed at the protection of the rights concerning new varieties of plants. China has two main industry associations, the National Seed Association and the China Seed Industry IP Union, that are non-profit associations consisting of entities and people engaging in the seed scientific research, production, operation and management. The China National Seed Group Co., Ltd. ("Sino Seeds") is the market leader in China regarding the seed industry. The chinese government, however, encourages investment from multinational companies as well as importation of modern crop planting management technologies and equipment. It supports the entry of investors with proven experiences in breeding and germplasm resources expansion and R&D. There has never been a better time for multinational companies with proven seed industry experience to look at building relationships with the Chinese government and enterprises.
Antioxidant Activities and Total Phenolic Contents of Three Legumes
이경준(Kyung Jun Lee),김가희(Ga-Hee Kim),이기안(Gi-An Lee),이정로(Jung-Ro Lee),조규택(Gyu-Taek Cho),마경호(Kyung-Ho Ma),이수경(Sookyeong Lee) 한국자원식물학회 2021 한국자원식물학회지 Vol.34 No.6
Legumes have been important components of the human diet. They contain not only protein, starch, and dietary fiber, but also various phenolic compounds such as flavonoids and phenolic acids. The importance of phenolic compounds to human health is well known due to their antioxidant activities. In this study, three legumes (adzuki beans, common beans, and black soybeans) frequently cultivated in Korea were evaluated for their total phenolic content (TPC) and antioxidant activities using DPPH (2,2-diphenyl-1-picrylhydrazyl), ABTS (2,2′-azinobis (3-ethylbenzothiazoline 6-sulfonate)), and FRAP (ferric reducing antioxidant potential) assays. In addition, correlations between agricultural traits and antioxidant activities of these three legumes were analyzed. Antioxidant activities assessed by DPPH, ABTS, and FRAP assays and TPC showed wide variations among legumes types and accessions. Among the three legumes, adzuki beans showed higher TPC and antioxidant activity than the other two legumes. In correlation analysis, seed size showed negative correlations with antioxidant activities and TPC. In principal component analysis and hierarchical clustering analysis, each of the three legumes was clearly separate. Results of this study can be used as basic information for developing functional materials for each legume. They can also help us understand the overall antioxidant activity of the three legumes.
한국 재래종 팥 유전자원의 기초 생육특성 및 프로파일링
이정란 ( Jeong Ran Lee ),최유미 ( Yu Mi Choi ),조규택 ( Gyu Taek Cho ),이기안 ( Gi An Lee ) 한국국제농업개발학회 2011 韓國國際農業開發學會誌 Vol.23 No.4
To facilitate the wider use of genetic resources, the agricultural characteristics and the genetic diversity of adzuki bean landraces were evaluated as a pilot study. Days from planting to flowering were ranged from 44 to 83 days with an average of 67.1 days. Days from flowering to maturity were ranged from 27 to 42 days with an average of 34.2 days, and days from planting to maturity were ranged from 83 to 118 days with an average of 101.2 days. Adzuki beans originating from North Korea tend to bloom earlier but mature later than those from South Korea. Agricultural characteristics of landraces were compared with those of the comparative cultivar, Choongju-pat. Days from planting to flowering, days from flowering to maturity, and days from planting to maturity of Choongju-pat were 65, 42 and 107 days, respectively. On the average, landraces seems more or less early maturing. It was also supported by distributing the accessions to the five Japanese ecotypes. One hundred eighty accessions of wild and cultivated adzuki bean were analyzed using 10 SSR markers. One hundred fifty-two alleles were detected with a lowest eight at the CEDG044 and a highest 36 at CEDG015. The average polymorphism information content(PIC) was 0.70. Gene diversity was the highest in the wild population while the lowest in the South Korea population.