고추 草長의 遺傳에 關한 硏究 Ⅱ. 組合能力과 遺傳分析

Studies on the inheritance of plant height in red pepper Ⅱ. Combining ability and genetic analysis

A diallel cross from eight red pepper varieties was used to investigate combining ability and gene action for main stem length, branch length, plant height and main stem diameter. The results were as follows. Significantly additive and dominance effects were observed for all plant height characters. A comparison of their relative magnitudes indicated additive genetic variances were much more important than non-additive genetic variances. It was observed that average degree of dominance for main stem length, branch length, and plant height were partial dominance, and main stem diameter was complete dominance. The directions of dominance were positive for all plant height characters. The minimum number of dominant alleles controlling the overall parental differences were estimated as one for main stem length, branch length and main stem diameter, and two for plant height. Heritabilities in narrow and broad sense were fairly high for all plant height characters.