GENETIC ANALYSIS IN MUSKMELON (Cucumis melo L.) USING NORTH CAROLINA MATING DESIGN
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 47
Abstract
Before starting any breeding programme, it is there is need to know the inheritance of important economic characters. By studying the genetics of economic traits and the precise estimation of components of genetic variation, the convenient breeding strategy can be formulated for their improvement. The sixteen BIPs of two crosses, IC-274014 × Punjab Sunheri (Cross-I) and IC-274014 × MM-28 (Cross-II) were evaluated. For node at which first pistillate flower opens, the BIPS of Cross-I and Cross-II exhibited significant additive genetic variance while dominance variance was non-significant and average degree of dominance was less than one. In Cross-I, polar diameter of fruit showed significance at both additive genetic variance and dominance variance but additive genetic variance was more than twice of dominance variance. While in Cross-II, additive genetic variance was highly significant and dominance was non-significant and average degree of dominance was less than one. For equatorial diameter, additive genetic variance was significant and dominance variance was highly significant in Cross-II while additive genetic variance was highly significant and dominance variance was non-significant in Cross-I and average degree of dominance was less than one. In the characters where dominance variance is more than additive genetic variance the heterosis breeding can be suitable option for muskmelon improvement. However, in other cases where additive genetic variance is more than dominance variance along with high heritability, it can be fixed in the inbred lines and inbred lines can be utilized for making new hybrids. Therefore, the present investigation was aimed at the mode of inheritance of important horticultural traits in muskmelon by evaluating bi-parental progenies (BIPs) which were developed and statistically analyzed by North Carolina Design-III.
Authors and Affiliations
NIRMAL SINGH
Keywords
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