水稻 量的形質의 遺傳에 關한 硏究 第2報. 冷水處理에 依한 벼 二面交雜 F₂ 集團의 組合能力 差異

Studies on the Inheritance of Quantitative Characters in Rice Ⅱ. Combining Ability Analysis for Several Agronomic Characters of Rice in F₂ Generation 7 Parents Diallel Cross Grown at Irrigated Cold Water and Natural Condition

The inheritance of some agronomic characters in rice(Oryza sative) was studied in F2 generation of 7 patents diallel cross in 1982. Each of two sets of F₂ populations including parents were grown under irrigated cold water (20℃) and natural water conditions. The average variances for all the characters studied were greater under cold water condition than under natural. The combining ability analysis showed that additive genetic variance was generally predominant for all the characters regardless of water temperatures. Most of characters showed over dominance under cold water condition, while they did partial dominance under natural condition.