Evaluation of brinjal (Solanum melongena L.) germplasm under organic conditions
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Date
2018-06
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
An experiment on “Evaluation of Brinjal (Solanum melongena L.) Germplasm Under Organic Conditions” was undertaken during kharif season of 2017. Forty-seven genotypes including two checks were evaluated in RBD with three replications in Vegetable Research Centre GBPUA&T, Pantnagar. Analysis of variance revealed highly significant differences among genotypes for all the characters studied. The genotypic and phenotypic coefficients of variation were high for fruit length, fruit diameter, number of fruits per plant, average fruit weight, marketable yield per plant, yield per plant and total yield per hectare. A narrow range of genetic difference between PCV and GCV of these traits indicates that a little influence of environment on phenotypic expression of these traits. Very high heritability along with high genetic advance as percent over mean was recorded for the characters like fruit length, fruit diameter, number of fruit per plant, average fruit weight, marketable yield per plant, incidence of fruit and shoot borer per plant and total yield per plant indicating direct selection for these traits would prove useful. Yield per plant was found positively and significantly correlated with fruit length, number of fruits per plant and marketable yield per plant. This indicated selection for these traits would be effective to improve the yield per plant in brinjal. The higher magnitude of positive direct effect on yield per plant was observed in marketable yield per plant, number of primary branches and fruit diameter indicating their true positive and significant association with yield per plant. Hence, direct selections of these traits are important for improvement of yield per plant. Forty-seven genotypes were classified into seven clusters following cluster analysis. Maximum intra-cluster distance was found in cluster II showing existence of wide genetic divergence. Maximum inter-cluster D2 values were observed between the clusters I and II indicating that the genotypes in these clusters can be used as parents in hybridization programme. Among the characters, number of fruits per plants showed maximum contribution towards the diversity followed by fruit length, marketable yield per plant, incidence of fruit and shoots borer, fruit diameter and average fruit weight. The genotypes Pusa Kaushal, Pusa Purple Cluster and Pusa Anupum as long fruit shape genotypes, Pusa Ankur for round fruit shape genotypes are higher yielder and the infestation of fruit and shoot borer was found minimum for Pusa Purple Cluster and DBL-02. Based on these observations, above genotype can be recommended for cultivation under organic conditions.
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