고구마의 몇가지 形質에 對한 一般 및 特殊組合 能力에 關한 硏究

General and Specific Combining Ability in a Diallel Cross among Six Sweet Potato (Ipomea batatas Lam) Clones

Among 6 sweet potato (lponwea batatas Lam) clones studied TIS-2129 exhibiited high general combining ability variance component and low specific combining ability variance component for tuberous root weight, average size cf tuberous root, dry matter percentage, dry weight of tuberous root and top weight and clone TIS-2172 had high general combining ability variance component for the number of tuberous root and dry matter percentage. It is suggested that the additive genetic variance is more important than nonadditive. genetic variance in determining tuberous root weight, average size of tuberous root, dry matter percentage, dry weight of tuberous root and top weight. But for the number of tuberous root per plant the main component cf genetic variance is of the nonadditive type.