A field experiment was conducted to estimate the genetic variability and genetic divergence in Cowpea. Thirty-One genotypes were sown in a randomized block design with two replications, during kharif 2018 at Research farm, Department of Agricultural Botany, V.N.M.K.V. Parbhani. The objective of the experiment was to identify divergent to be used as donor parents in hybridization programmes. The observations were recorded on 12 characters viz., Plant height (cm), number of primary branches per plant, days to 50% flowering, number of pods per plant, number of seeds per pod, mean pod weight (g), pod length (cm), pod width (cm), days to first pod harvest, 100 seed weight (g), pod yield per plant (gm), pod yield per hectare (Kg). Analysis of variance and mean performance for pod yield and its components revealed significant differences among all the genotypes for all the characters there by indicating presence of variability in genotypes studied. From correlation studies, it was observed that pod yield per plant had exhibited highly significant positive association with number of pods per plants, number of primary branches per plants, plant height and number of seeds per pod. Whereas maximum significant and negative correlation was shown by days to first pod harvest. In the present studies, the characters plant height (cm), number of primary branches per plant, days to 50% flowering, number of seeds per pod, number of pods per plant and pod length showed positive and significant correlation with pod yield per plant. Pod yield per hectare recorded high positive significant correlation with number of primary branches per plant (0.6115rg, 0.4548rp) at 1% level of significance. It also showed positive significant correlation with number of pods per plant (0.2321rg, 0.2595rp) and number of seeds per pod (0.3760rg, 0.2984rp) at both 5% and 1% levels of significance. These results are supported by Patel et al. (2016). The magnitude of genotypic correlation was higher than phenotypic correlation for all the traits that indicated inherent association between various characters.
The combining ability analysis of 8×8 half diallel set of crosses in brinjal was undertaken for fruit yield and its attributing characters. Eight parents, twenty eight hybrids and two standard checks were evaluated during late kharif/rabi 2018-19 for the present study in randomized block design for two replications. The analysis of variance revealed presence of considerable variability among genotypes for all the characters under study. Combining ability analysis revealed important of both additive and non additive variances in expression of various traits. Among the parental genotypes, parent SBJH-631 and Sep-034 were good general combiners for fruit length, fruit cluster per plant, number of fruits per plant, fruit yield, number of leaves per plant, shoot borer infestation and fruit borer infestation. Followed by Utkal Keshari and IBH-2 for days to 50% flowering, fruit weight, fruit diameter, fruit cluster per plant, number of fruits per cluster and fruit borer infestation. In respect to estimates of specific combining ability effects, cross IBH-2 x SBJH-631 was good for number of branches per plant, number of fruits per plant, number of fruits per cluster and fruit yield and SBJH-631 x Sep-034 was shown best specific combining ability for number of leaves per plant, number of flowers per plant, number of fruits per plant, total yield and fruit borer infestation characters. The additive gene components were observed to be predominant for all characters except number of branches per plant, number of leaves per plant and shoot borer infestation.
Brinjal or eggplant is an important vegetable crop of Indian origin having wide variability with respect to different qualitative characters. In India, it is one of the most common, popular vegetable crops grown throughout the country. Being a centre of origin, eggplant has a huge genetic variability in the country, which offers much scope for improvement through heterosis breeding. The efforts could enhance its quality and productivity without scarifying the consumer's choice. The combining ability is also one of the important genetic tools, which provide a guideline for an assessment of the relative breeding potential of the parents or identifying the best combiners, which may be hybridized either to exploit heterosis or to accumulate fixable genes. The knowledge regarding the nature of gene action is essential for choosing suitable breeding methodologies for brinjal improvement. The present research work is conducted to exploit the nature of gene action for various fruit yield attributing traits. The hybrids has shown significant differences for all the characters except for plant height. The effects of hybrids were partitioned into lines, testers and their interactions. The lines were significant for most of the characters except for the number of primary branches and plant height. Among testers, the differences were nonsignificant for days to first picking, number of fruits per cluster and plant height, whereas other characters were found significant. The highest sca effect was observed in JB-9 x DMU-1 (7.45) fruit weight, JB-9 x CO-11 (0.99) fruit girth, DBR -8 x DMU -1(3.49) fruit length, JB-9 x JKGEH-6012 (2.58) number of fruits per plant, DBR-8 x B.deoria (0.45) number of primary branches per plant and JB-9 x JKGEH-6012 (2.51) for fruit yield per plant. Gene action analysis revealed the preponderance of both additive and non-additive genes for yield and its contributing characters.
SUMMARYThe present investigation on path analysis studies for quantitative traits in sesame (Sesamum indicum L.) was undertaken at experimental farm of AICRP on Safflower, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani, Maharashtra. The experimental material consisted of Thirty four sesame germplasm lines including one check evaluated during Kharif , 2016 in Randomized Block Design with three replications. The observations were recorded on 12 characters viz., days to 50 per cent flowering, plant height, number of primary branches per plant, number of capsules per plant, capsule length, capsule breadth, number of seeds per capsule, 1000 seed weight, days to maturity, oil content, seed yield per plant and per ha. The path co-efficient analysis revealed that, days to 50% flowering (G-2.9535) exerted the highest positive direct effect on seed yield per hectare followed by number of seeds per capsule (G-0.4577), seed yield per plant (G-0.3793), number of primary branches per plant (G-0.3587) and number of capsules per plant (G-0.0175).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.