水稻品種의 二面交雜에 의한 量的形質의 遺傳分析 Ⅲ. 자포니카 水稻品種의 出穗期 및 몇가지 生育形質에 대한 組合能力

Inheritance of quantitative characters in diallel cross of rice Ⅲ. Combining ability of heading date and several growth characters in japonica rice

The general combining ability and specific combining ability of days to flowering and growth characters such as culm length, panicle length, panicle exsertion and length of flag leaf were studied in the F₁ and F₂ generations of 15 crosses from the partial dialled cross of 6 Japonica rice varieties. The effects of GCA and SCA were highly significant for days to flowering, culm length, panicle length, panicle exsertion and length of flag leaf, and the GCA of these characters in the F1 and F2 generations was greater than SCA. Rice varieties, Ishioka mochi 7 and RAC 3 as parents were quite effective for reducing days to flowering, and Seolagbyeo. Cheolweon 34 and Samnambyeo were quite good for reducing culm length. There were highly significant correlations between generations in variance and ranks of parental GCA effects of days to flowering, culm length, panicle length, panicle exsertion and length of flag leaf.