シロアズキ在来品種における分枝性と収量構成要素および子実収量との関係 [in Japanese] Relationships among Branching Habit, Yield Components, and Grain Yield of Native Varieties of White Azuki Bean (Vigna angularis). [in Japanese]
Access this Article
Search this Article
秋田県内37ケ所から収集したアズキ (Vigna angularis) の在来品種シロアズキを用いて, 分枝性の系統間変異と収量性および収量構成要素との関係を検討し, 次の結果を得た. 1) 個体当たり子実重, 総節数, 総莢数, 総粒数は系統間で有意な差を示し, その差は主茎よりも分枝の系統間差に強く依存した. 分枝数も系統間で有意な差を示した. 2) 個体当たり子実重と主茎・分枝別の収量構成要素との関係をみると, 節当り莢数と一莢粒数は主茎, 分枝ともに個体当り子実重と密接な関係を示したが, 百粒重は関係が小さかった. 3) 主茎・分枝別の収量構成要素と分枝数の関係において, 分枝の多い系統ほど主茎百粒重が小さくなる傾向がみられたが, 他の要素では相関関係がみられなかった. 4) 収量構成要素の値の分枝/主茎比と分枝数との関係では, 分枝の多い系統ほど百粒数での比の値が大きくなる傾向が示された. 5) 以上の結果から, シロアズキの在来系統群においては, 分枝性が収量構成要素に直接働きかけて増収効果をもたらす方向へ系統分化が進んでいるとは考えられないと推論した.
The relationships among branching habit, yield components, and grain yield of 37 strains of white azuki bean (Vigna angularis), collected from various parts of Akita Prefecture, were studied in field experiments in 1990 to investigate the relationship between branching habit and yield. Grain yield/plant, number of nodes/plant, number of pods/plant, and number of grains/plant significantly differed among strains, but differences were more closely associated with morphological characteristics of branch portions rather than those of the main stem. The number of branches was also significantly different among strains. Grain yield/plant was highly positively correlated with the number of pods/node and the number of grains/pod on both the main stem and branch portions, but was only slightly correlated with 100-grain weight. Correlations between the number of branches to the yield components on the main stem and branches were generally not significant, except for 100-grain weight of main stem which was slightly negative. The ratio of branch grain size (100-grain weight) to main stem grain size tended to be higher in strains having greater branch numbers. From these results, it was estimated that differences among strains in yield components were not attributed to differences in branching habit, although yielding ability was highly correlated with the branch yield components.
- Japanese Journal of Crop Science
Japanese Journal of Crop Science 62(4), 491-495, 1993
The Crop Science Society of Japan