Estimation of heterosis for yield and its contributing traits in brinjal

• Published in: Journal of environmental biology 2018-09, Vol.39 (5), p.710-718
• Main Authors: Rani, M., Kumar, S., Kumar, M.
• Format: Article
• Language: English
• Subjects: Agricultural production; Ascorbic acid; Crop yield; Design of experiments; Environmental science; Experimental design; Flowering; Food; Fruits; Genotypes; Heterosis; Hybrids; Morphology; Parents; Phenols; Productivity; Quality; Variance analysis; Weight
• ISSN: 0254-8704; 2394-0379
• DOI: 10.22438/jeb/39/5/MRN-609

Aim : The development of high yielding F1 hybrids with superior fruit quality is important to increase the productivity as well as fulfill the demand of consumer and also increase the farmer's income. In view of this, the present study was undertaken to identify superior F1 hybrids having desirable traits. Methodology : Twenty one cross-combinations (excluding reciprocals) involving seven parents were made in a diallel fashion during 2014-2015. The parents were selected based on their perse performance. The experimental materials comprising twenty one F1 hybrids, seven parents and one standard check were evaluated in randomized complete block design (RCBD) with three replications during the summer season of 2015-2016 at the experimental field of the Division of Vegetable Science and Floriculture, SKUASTJammu, India. Results : Analysis of variance for experimental design indicated that the mean square (MS) due to genotypes, parents, hybrids and parents vs hybrids were significant for all the traits studied except days to first picking of parents and crosses, number offruits per plant and primary branches per plant of parents and days to flowering of crosses, where the mean square was non-significant. For fruit yield per plant and total fruit yield (q ha-1) twenty one and fourteen F1 hybrids exhibited significant positive better parent and standard heterosis, respectively. The cross-combinations IC 354611 · IC 310886 and IC 261797 · IC 310886 exhibited highest heterosis over better parent for fruit yield per plant and total fruit yield, respectively, whereas over standard check, the hybrid IC 261797 · IC 104101 had shown the highest heterosis for both the traits. The F1 hybrid IC 104101 · IC 310886 exhibited highest significant positive standard heterosis for number offruits per plant and hybrid IC 261797 · IC 104101 forfruit weight. Some of the promising hybrids showed desirable heterosis for days to flowering, ascorbic acid and phenol content. Interpretation: Cross-combination IC 261797 · IC 104101 was identified as promising F1 hybrid for total fruit yield with otherimportantfruit traits and this hybrid can be exploited at the commercial level.