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DEVELOPMENT OF HYBRIDS AND THEIR STABILITY IN CHILLI (Capsicum annuum L.)

KrishiKosh

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Title DEVELOPMENT OF HYBRIDS AND THEIR STABILITY IN CHILLI (Capsicum annuum L.)
 
Creator KRANTHI REKHA GOGULA
 
Contributor Dr.L. NARAM NAIDU
 
Subject the magnitude of heterosis ,pooled analysis ,heterotic hybrids
 
Description Two experiments were conducted at HRS, Lam with an objective of studying combining ability of the parents and crosses, to estimate the magnitude of heterosis and to assess the stability of resulting hybrids for yield and yield components. The investigation was undertaken with an aim to develop heterotic hybrids with wider adaptability.
The pooled analysis of variance for combining ability revealed significant differences due to environment, parents and hybrids and various interactions indicating the existence of wide variability in the material studied. The ratio of gca to sca variances revealed that non-additive gene action was predominant over additive gene action in the inheritance of all the characters studied except plant spread, fruit length, fruit diameter, average dry fruit weight, dry fruit recovery and seed weight.
The gca effects of the parents in pooled analysis revealed that the lines LCA 764 and LCA 704 and the testers LCA 703 and LCA 315 were promising general combiners for fruit yield and other yield contributing traits. All these parents were considered to be contributing maximum positive alleles for the increase of fruit yield per plant.
Based on the sca effects in pooled analysis, eight hybrids viz., LCA 625 x LCA 706, LCA 764 x LCA 315, LCA 764 x LCA 763, LCA 704 x LCA 315, LCA 710 x LCA 706, LCA 718 x G4, LCA 712 x LCA 763 and LCA 712 x LCA 703 were identified as promising for fruit yield per plant and other characters.
Among the twenty one characters studied for stability, the GE interactions were significant for ten characters viz., plant height, plant spread, per cent fruit set, no. of fruits per plant, fruit length, average dry fruit weight, dry fruit yield per plant, seed weight, vitamin C and capsaicin value implying differential behaviour of genotypes under three locations for these characters.
Environmental indices revealed that Lam location was found to be the most favourable location for plant height, plant spread, no. of fruits per plant, dry fruit yield per plant and capsaicin content, while V.R.Gudem was the most favourable for per cent fruit set, fruit length and average dry fruit weight. The Darsi location was the most favourable for seed weight and vitamin C.
From the present study on stability, seven hybrids viz., LCA 704 x LCA 315, LCA 704 x LCA 703, LCA 764 x LCA 315, LCA 712 x LCA 703, LCA 704 x LCA 706, LCA 710 x LCA 706 and LCA 625 x LCA 706 possessed higher fruit yield than the standard checks and were identified as stable hybrids for fruit yield per plant and other traits.
Based on the present study, it can be concluded that five hybrids viz., LCA 704 x LCA 315, LCA 764 x LCA 315, LCA 712 x LCA 703, LCA 764 x LCA 763 and LCA 710 x LCA 706 were observed to be stable with desirable sca effects, heterosis and per se performance for fruit yield and other important traits.
 
Date 2016-07-25T13:34:13Z
2016-07-25T13:34:13Z
2015-03
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/69761
 
Language en
 
Format application/pdf
 
Publisher Dr. Y. S. R. HORTICULTURAL UNIVERSITY