Relationship between fruiting period and agronomic characters in Korean local soybean collections
1988
Song, H.S. (Korea Advanced Energy Research Inst., Seoul (Korea R.). Radiation Genetic Engineering Laboratory) | Kim, B.Y. | Kwon, S.H. (Kyounghee Univ., Seoul (Korea R.). Coll. of Industry)
The present study was conducted to evaluate agronomic characters of the soybean germplasm which was collected from the sites covering whole areas of southern Korean peninsula. A total of 2,748 Korean native soybeans was grouped for fruiting period and in this group frequency distribution of the important agronomic characters and relationships among the characters were determined. The soybean germplasm was comprised of Seoul. Kyonggi-do 7.5%, Kangwon-do 13.3%, Chungchongbuk-do 6.6%, Chungchongnam-do 12.3%, Chollabuk-do 10.7%, Chollanam-do 12.6%, Kyongsangbuk-do 20.8%, Kyongsangnam-do 15.3% and Cheju-do 0.6% in number of collections. Frequency distribution of the germplasm for fruiting period was 0.14% in Group I (below 55 days), 1.67% in Group II (56-60 days), 10.58% in Group III (61-65days), 23.18% in Group IV (66-70 days), 25.91% in Group V (71-75 days), 19.79% in Group VI (76-80 days), 15.1% in Group VII (81-85 days) and 3.6% in Group VIII (over 85 days). The lines over 70 days in fruiting period were as much as 64.4% of germplasm. The fruiting period varied largely from 45 days to 91 days. Fruiting period was positively correlated to seed weight, days to maturity, days to flowering, plant height and number of branches per plant, respectively. While, it was negatively correlated to number of pods, lodging and virus infectivity, respectively, and in particular negative correlation was shown significantly between yield and fruiting period. Average yield was very high as much a 1,389kg/ha in fruiting period Group I, and decreased with increment of fruiting period, 1,400kg/ha in Group II, 1,384kg/ha in Group III, 1,299kg/ha in Group IV, 1,197kg/ha in Group V, 1,117kg/ha in Group VI, 967kg/ha in Group VII and 832kg/ha in Group VIII
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