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Breeding investigations in segregating populations of narrow leaflet genotypes in soybean (Glycine max (L.) Merrill)

KrishiKosh

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Title Breeding investigations in segregating populations of narrow leaflet genotypes in soybean (Glycine max (L.) Merrill)
 
Creator S.Manasa
 
Contributor G.T. Basavaraja
 
Subject Genetics and Plant Breeding
 
Description An investigation was carriedout to elucidate information on the performance of
narrow leaflet genotypes in soybean for yield and its component traits and to classify the F4
populations of two crosses viz., JS 93-05 x JS-335 and JS 93-05 x DSb-1 based on their
leaflet shape during kharif 2007 at Main Agricultural Research Station, University of
Agricultural Sciences, Dharwad. An attempt was also made to assess the stability of these F4
populations across locations.
Among two different experiments conducted experiment-I comprised of eight narrow
leaflet genotypes along with checks viz., JS-335, DSb-1, KHSb-2 and JS 93-05. Among these
genotypes, Acc. No. 18-A recorded higher seed yield and significant superiority with respect
to traits viz., plant height, days to maturity specific leaf weight, number of seeds, number of
four seeded pods and harvest index compared to checks.
In experiment-II all the leaflet types viz., oval, ovate, lanceolate of both the crosses
recorded wide range of variation for all traits indicating the presence of sufficient variation
among the genotypes. High heritability coupled with high genetic advance was observed for
traits viz., number of pods, number of seeds and seed yield. The association analysis revealed
that seed yield had significant positive association with plant height, number of pods, number
of seeds and harvest index in all the leaflet types of both the crosses.
In stability analysis, pooled ANOVA revealed significant differences among
genotypes, environments and G x E interaction for all characters, indicating diverse nature of
genotypes and environments evaluated and genotypes interacted significantly with
environments. On the basis of stability parameters line 1 of cross JS 93-05 x JS-335 was
identified as stable genotype for all the characters studied with higher mean performance
across environments. However, line 4 of cross JS 93-05 x JS-335 was the highest yielder
across environments.
 
Date 2016-10-27T15:12:14Z
2016-10-27T15:12:14Z
2008
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/82561
 
Format application/pdf
 
Publisher UAS, Dharwad