This experiment was carryed out in order to examine the genetic relationships between the leaf and fruit characters by means of biometric genetics. 6 cultivars of the apple including a total of 18 trees were tested for the experiment.
The results obtained can be summarized as follows;
1. Significant differences were observed among the mean values and the coefficients of variation of the varieties for each character of leaf and fruit. In the ranges of the coefficients of variation, leaf area was the largest by 11% and leaf shape index was the lowest by 3.3% in leaf characters. Fruit stem length is the largest by 9.2% and fruit width was the lowest by 2.0% in fruit characters.
2. The broad sense heritabilities of the leaf and fruit characters were relatively high. In leaf characters, petiole weight was the highest by 93% and leaf thickness was the lowest by 55.4%. In fruit characters, fruit weight was the highest by 95.2% and fruit stem length was the lowest by 73.7%.
3. As for genetic coefficient of variations, leaf weight was the highest by 37% in leaf characters. Fruit weight was the highest by 33.9% and fruit shape index was the lowest by 4.4% in fruit characters. Genetic coefficients of variation was inclined to be higher than coefficients of variation.
4. In correlations between leaf characters and fruit characters, significant phenotypic correlation between petiole weight and fruit characters was noted. In correlations between leaf characters, and between fruit characters, high significant phenotypic correlations were observed. In general, genotypic correlations were higher than phenotypic ones and environmental correlations were much changeable.
5. Leaf character which had the largest direct impact on fruit characters was the petiole diameter, and petiole weight, in turn. But blade length, blade width and leaf shape index connected with leaf size were likely to be relatively large.
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