An Analysis on Relationship Between Leaf Characters and Main Agronomic Characters in Determ inte-type Soybean

The relationship of leaf characters (Sach as leaf length, leaf wideth, leaf size, length of leaf handle and leaf angle) and main agronomic characters (sach as 100 seeds weight, number of seeds per pod and yield) were examined for 4 soybean cultivars (lines). The results are summarized as follows: 1. The correlation of leaf length, index of leaf form, leaf length, leaf width, and leaf width of middle leafit with that of leafit of side were significantly crrelation coefficient was respectively 0.911*, 0.996**, 0.994*, 0.995**, respectively. 2. Only the length of leaf handle on the leaf characters was modertely significantly and positively correlated with a piece of leaf area (r=0.957*). It was no significant relationship between the characters of the others. 3. The correlation of the index of leaf form with the number of pod per two seeds was significantly positive conversely, the leaf characters of the other was no significantly correlated with the number of seeds per pod. 4. The leaf characters of middle-leafit and leafit of side were no significantly correlated with 100-seeds weight. 5. The leaf length was significantly correlated with effective branches (r=0.999**). The index of leaf form was positively correlated with the number of branches per pod and the abrount of seeds, the leaf characters of the other was yet no significantly correlated with yield. Thus, we can not ignore the selection of leaf characters in the breeding of high yield.