우리나라 재래 야생콩 70계통들의 종실 성분들을 분석하여 활용 가능한 야생콩 계통을 선발함으로써 나물콩 품종 육성의 재료로 활용할 수 있는 기초 자료를 얻고자 수행된 결과를 요약하면 다음과 같다. 1. 조단백질 함량 범위는 35.6-47.9~% , 평균은 42.3~% 였으며, 13계통은 45~% 이상인 고단백 계통이었다. 조지방 함량은 2.8-18.0~% , 평균 10.2~% 로 3~% 이하인 2계통을 찾을 수 있었다. 2. 지방산 조성에서 16:0은 11.1-44.6~% , 18:0은 3.0-11.4~% , 18:1은 11.1-30.6~% , 18:2는 12.4-59.5~% , 18:3은 1.1-17.3~% 범위였는데 특히 18:3 조성이율이 극히 낮은 2계통을 발굴하였다. 3. 조단백질은 조지방 및 지방산과 상관이 인정되지 않았고, 조지방은 16:0, 18:0함량과 고도의 부의 상관이, 18:2와 고도의 정의 상관을 그리고 16:0과 18:0, 18:1 간에는 고도의 정의 상관이 인정되었고, 18:2와 18:3과는 고도의 부의 상관이 인정되었다.

본 실험은 콩의 단백질함량을 높이고 단백질 특성을 개선시키며, 고 기능성 보유 콩을 육성하기 위하여 수행되었다. 야생콩의 조단백, 조지방, 아미노산조성 및 isoflavone 함량을 분석 하였으며 결과를 요약하면 아래와 같다. 1. 야생콩 132점의 조단백질함량은 평균 45.4~% 이며, 함량범위는 37.4~~50.2~% 이었으며, 조지방함량은 평균 9.3~% 으로 일반 재배종콩에 비하여 낮은 경향을 나타냈다. 2. 총 아미노산의 평균 함량은 19,214ug/g , 함량범위는 16,098~~22,112ug/g 수준이었으며, 황함유 아미노산인 methionine은 평균 252.7ug/g , cysteine은 102.9ug/g 의 함량을 나타냈다. 3. 전체 아미노산 함량 중 methionine과 cysteine은 각각 1.3~%,0.5~% 의 비중을 차지하였으며, glutamic acid가 16.1~% 로 가장 높았다. 4. 전체 아미노산 함량과 황함유 아미노산과의 상호관련성은 발견되지 않았으며, 충남 부여수집종인 IT182823 과 경기 포천 수집종인 IT184213이 높은 황함유 아미노산 함량을 나타냈다. 5. 총 아이소플라본의 평균 함량은 1,105ug/g 이었으며, aglycone 중 genistein의 평균 함량이 695.2ug/g 으로 가장 높았으며, 다음으로 daidgein, glycitein 순이었다. 6. Isoflavone과 genistein과의 상호관련성에 있어서 시험재료는 isoflavone 함량이 높으면 genistein 함량이 높은 경향이었다.

Rehmannia glutinosa shows a high level of resistance to the non-selective herbicide paraquat. To characterize the antioxidant enzyme system of R. glutinosa, we comparatively examined the responses of antioxidant enzymes to UV, wounding and a general elicitor yeast extract in R. glutinosa and soybean. The levels of enzyme activities of the two plant species were drastically different between those per fresh weight (general activity) and per protein (specific activity) bases. The general activities of superoxide dismutase (SOD), peroxidase (POX), catalase (CAT), and glutathione reductase (GR) were lower, but that of ascorbate peroxidase (APX) was higher in R. glutinosa than in soybean. The specific activities of the enzymes, however, were about two- to seven-fold higher in R. glutinosa than in soybean, except that of CAT, which was about 12-fold higher in soybean. The general and specific enzyme activities of R. glutinosa relative to those of soybean showed a consistent increase in responses to the stresses only in SOD. The specific activities of SOD and APX were higher in R. glutinosa in all stress treatments. The results might suggest a relatively higher contribution of SOD and APX to the stress tolerance.

Changes in the level of metabolites in leaves and pods were examined with respect to the seed chemical composition in black soybean. There was no further increase in pod length after 42 days after flowering (DAF). Pod weight, however, persistently increase until 73 DAF, thereafter the weight was slightly lowered. The seed storage protein, however, increased drastically as the increasing rate of pod weight was lessened at 61 DAF. The accumulation of seed storage proteins was occurred conspicuously as the increasing rate of pod weight was slowed down. The chlorophyll content both in leaves and pods was drastically decreased after 50 DAF. The beginning of drastic reduction in chlorophyll content was occurred concomitantly with the reduction of soluble protein content in leaves. The sugar content in leaves showed similar tendency with chlorophyll and soluble protein content. The starch level in leaves, however, showed different changing pattern during seed development. The starch content in leaves was increased persistently until 66 DAF, thereafter the content was decreased drastically to about 55~% of maximal value at 66 DAF. Total phenolics content in leaves and the anthocyanins content in seeds were stable without noticeable increase until 66 DAF. The contents were increased dramatically after 66 DAF showing the synchronized pattern with the decrease in starch level in leaves. The levels of the selected metabolites in leaf and seed suggested that the accumulation of chemical components of black soybean seed is launched actively at 66 DAF. The profile of storage proteins was nearly completed at 61 DAF because there was no large difference in densitometric intensity among protein subunits after 61 DAF. In soybean, chemical maturation of seed begins around 61 to 66 DAF at which most metabolites in vegetative parts are decreased and remobilized into maturing seeds.

Number of nodes and branches are yield component characters whose expression are highly related with many other traits. In this study, a population derived from the cross of ‘Keunolkong’ and ‘Shinpaldalkong’ was evaluated with SSR markers to identify QTLs

This study was carried out to investigate the best explant source and combination of media and growth regulators for the regeneration of multiple shoots in soybean (Glycine max. L. Merr.) cv. ‘Iksannamulkong’. Multiple shoots could well be directly induce

An experiment was conducted to determine N₂-fixation efficiency using 5 soybean genotypes, viz. 'Chiang Mai (CM) 60', 'SJ1', 'Santa Maria', 'KUSL 20004', 'AGS 292' and 40 rhizobium strains from the Soil Microbiology Group, Soil Science Division

Wild perennial types of genus Glycine, as sources of genetic diversity, have been recently employed in the soybean breeding programs. This study was carried out to introduce some useful characters of wild perennial Glycine species into G. max. Parent mate