A REVIEW ON VARIABILITY, HERITABILITY AND GENETIC ADVANCE IN EGG PLANT (Solanum melongena L.) (original) (raw)

2015

Abstract

Eggplant (Solanum melongena L.) belongs to the family Solanaceae. Brinjal grows throughout the tropical and subtropical regions of the world. It is a major vegetable crop grown throughout India for its tender fruits. Being day neutral plant, it is widely grown during summer and winter seasons to fulfil the market demand. It is grown for its immature, unripe fruits which are used in the variety of ways as cooked vegetable in curries. It is grown extensively in all parts of India except at higher altitude. Genetic variability plays an important role in a crop in selecting the best genotypes for making rapid improvement in yield and other desirable characters as well as to select the potential parents for hybridization programmes. The progress in breeding for economic characters that are mostly polygenically controlled and hence environmentally influenced is determined by the magnitude and nature of their genetic variability. Heritability is an index for calculating the relative influence of environment on expression of genotypes. It becomes very difficult to judge the proportion of variability that is really heritable. Most of the researchers found that characters like fruit length, fruit weight and fruit breadth showed comparatively high GCV value. Likewise literature reviewed in this paper showed high heritability and genetic advance for characters like average fruit weight, fruit length, number of fruit per plant and yield per plant. High heritability and genetic advance indicating additive gene action suggested that simple selection could be effective for the improvement of those traits.

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