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Evaluation of segregating populations for productivity and rust resistance in soybean (glycine max (L.) Merrill)

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Title Evaluation of segregating populations for productivity and rust resistance in soybean (glycine max (L.) Merrill)
 
Creator M.Shivakumar
 
Contributor G.T.Basavaraja
 
Subject Genetics and Plant Breeding
 
Description An investigation was carriedout to elucidate information on genetic variability,
correlation and path coefficient analysis for productivity traits and reaction to rust in F3
populations of two crosses (JS 335 x EC 241780 and JS 93-05 x EC 241780) of soybean
during kharif 2007 at Main Agricultural Research Station, University of Agricultural
Sciences, Dharwad. The experiment was laid out in randomized complete block design
(RCBD) with two replications. The observations were recorded on twelve traits such as days
to flowering, plant height, number of branches per plant, pods per plant, pod length, pod
weight, number of seeds per pod, number of seeds per plant, 100 seed weight, biomass,
harvest index and seed yield for plant.
Highest PCV and GCV values were observed for pod weight, number of seeds per
plant, biomass and seed yield per plant in cross JS 335 x EC 241780. Days to flowering and
number of seeds per pod recorded low PCV and GCV values in both the crosses. High
heritability coupled with high genetic advance was noticed for the traits viz., plant height,
number of branches per plant, number of pods per plant, pod weight, number of seeds per
plant, biomass and seeds per plant.
Correlation studies revealed significant association of seed yield with number of
branches per plant, pod length, pods per plant, pod weight, number of seeds per pod, number
of seeds per plant, biomass and harvest index in both the crosses. The maximum positive
direct effect on seed yield per plant was exhibited by biomass followed by harvest index in
both the crosses.
Screening studies under artificial condition revealed that one progeny line from cross
JS 335 x EC 241780 and five progeny lines from cross JS 93-05 x EC 241780 exhibited
resistant reaction to soybean rust.
 
Date 2016-10-27T15:16:10Z
2016-10-27T15:16:10Z
2008
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/82566
 
Format application/pdf
 
Publisher UAS, Dharwad