大豆의 遺傳的 變異와 選拔에 關한 硏究 = Genetic Changes and Selection Method of Soybean

다국어 초록 (Multilingual Abstract)

In order to establish gene source bank of soybean, collection of 825 lines currently grown by farmers was made from the southern part of Korean peninsula. From this population, the range of phenotypic variation of several important agronomic characters and the amount of genetic variation within the population with the aid of suitable genetic parameters, such as genetic coefficient of variation, heritability, and genetic advance for improvement of the traits were investigated. An attempt was also made to get available information on the relative importance of yield components fur developing high yielding variety. The results were summarized as follows :
1.Yield was ranged from 190.0 kg to 2,349 kg per hectare with the standard deviation of 494.04. Majority of lines of the collection were ranged between 795 kg and 1,245 kg and 30 lines yielding over 1,620 kg were found.
2.The collection was consisted of two different groups in seed size, 13.5 gr and 29.0 gr in average of 100 seed weight, respectively. Of the collection, five lines were over 40 gr in 100 seed weight. Plant height was ranged from 45.5 cm to 129.0 cm with the average of 74.79 cm and number of pods per plant from 26.0 to 140.5 with the average of 52.83 was observed.
3.Protein content was ranged from 37.0% to 49.5% and the average was 42.03%. The major part of the collection was distributed from 40.7% to 44.2% in protein content. The average of oil content was 11.46%, and 70 percent of the collection was distributed between 16.5% and 19.0%. These results suggest that high protein lines among the collection flay play an significant role for improvement of protein content, whereas high oil content line was not found from this collection.
4.Seed weight, plant height, and number of pods per plant were shown relatively high heritability value and genetic advance. However, maturity showed high heritability estimate but less genetic advance due to the narrow range of phenotypic variation.
5.The genotypic and phenotypic correlation coefficients showed that the yield of soybean was positively associated with seed weight, number of pods per plant, plant height, and maturity. The high possitive correlations between seed yield and yield components may be due to the high positive direct effect of the yield components upon yield . In general, the genotypic correlation coefficients were found to be higher than the phenotypic correlation coefficients.
Consequently, it could be concluded that seed weight, number of pods per plant, plant height, and maturity were useful as an indicator for selection of high yielding variety.

목차 (Table of Contents)

• 緖言
• 1.硏究史
• 2.材料 및 方法
• 3.結果 및 考察
• 4.摘要
• 引用文獻