Correlation and Genetical Analyses of the Several Characteristics at the Stage of Individual Selection in the Tea Plant (Part 2):On the Correlations among Yield, Number of Leaves per Plant and Characters of Leaf in the Clonal Varieties for Green Tea
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Nine genotypes of tea clones, as the stage of individual selection, were used in this studies. Number of leaves per plant, leaf length, variability of leaf length, leaf width and variability of leaf width were measured to calculate the correlation coefficients among these characters. Then the relationships were also shown among these five characters and yield in the year after next. Broad sense heritabilities on a single plant basis for number of leaves, leaf length and leaf width were high (0.67-0.79), but variability of leaf length and variability of leaf width had very low values.<BR>Heritabilities on a mean value of clone, how ever, for variability of leaf length and variability of leaf width were relatively high, so it is clear that the clones had significant differences of variabilites or instabilites in these two characters.<BR>Genetic coefficient of variation for number of leaves was large and the other traits's one were small.<BR>Coefficients total, genetic and environmental correlation among these characters were estimated. Large number of leaves significantly associated with large leaf size, and reversely with small these variabilites. Correlations between leaf length and leaf width, between these two variabilities were also positively high.<BR>The relationships among these five characters and yield in the year were shown by single, partial and multiple corrlation coefficients, this indicated that clones grown under the same environmental conditions could be examined for relative yielding capacity by the number of leaves.
- 日本茶業技術協会の論文
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