Identification of component traits as selection criteria to improve fruit yield in Indian jujube (Zizyphus mauritiana Lamk.)
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Genetic advance, heritability, Zizyphus mauritiana Lamk., path analysis, fruit yield.Issue
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Abstract
The study was conducted on 43 Indian jujube cultivars collected from Haryana, Rajasthan, Punjab and other parts of the country, planted at CCS Haryana Agricultural University, Hisar for estimating genetic parameters, correlation and path coefficient with respect to fruit yield and component traits. Heritability estimates were high for all the traits. GCV and PCV values were close to each other indicating least role of environment in the inheritance of different traits. High genetic gain for fruit yield per tree, fruit weight, pulp: stone ratio and leaf area demonstrated that these traits are under the control of additive gene action and phenotypic selection for their improvement will be effective. Significant positive association of fruit yield per tree was detected with fruit weight and fruit breadth. Path coefficient analysis showed maximum direct effect of stone weight upon fruit yield per tree followed by pulp: stone ratio and pulp percentage. It was concluded that during selection due weightage should be given to traits like fruit weight and pulp percentage for developing high yielding cultivars of Indian jujube for semi-arid regions.
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