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Phenotypic characterization, assessment of genetic diversity, screening for protein content and Bruchid Infestation in cowpea (Vigna unguiculata (L.) Walp.)

KrishiKosh

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Title Phenotypic characterization, assessment of genetic diversity, screening for protein content and Bruchid Infestation in cowpea (Vigna unguiculata (L.) Walp.)
 
Creator Basavaraj.Makanur
 
Contributor V.K.Deshpande
 
Subject Seed Science and Technology
 
Description A field and laboratory experiments were conducted at Department of Seed Science
and Technology, University of Agricultural Sciences, Dharwad during kharif 2009 for
phenotypic characterization, assessment of genetic diversity, screening for seed protein
content and genotypic relative response to bruchid infestation.
Thirty five cowpea genotypes were grouped based on the seed and seedling
morphological characters such as seed coat colour, hilum colour, seed shape, seed coat
lusture, hundred seed weight, seed size and hypocotyl pigmentation. Further based on the
plant morphological characters such as pigmentation on stem, growth pattern, 50 per cent
flowering, flower colour, growth habit, pubescence on stem, leaf colour, immature pod
pigmentation, raceme position, pod attachment, plant height, primary branches per plant,
clusters per plant, pods per peduncle, pods per plant, mature pod constriction, days to
maturity, pod length, seeds per pod, pod colour at maturity, seed yield per plant and hectare
of genotypes were classified into different groups. Among 13 characters studied ten
characters contributed to diversity, in which the highest contribution was recorded by the
seed size followed by pod length.
Significant difference was recorded for seed protein content. The highest percentage
of protein content (24.06%) was noticed in IC97787 and lowest (13.88%) was in IC259159-2
genotype. Significant difference was also observed among genotypes to their relative
susceptibility to bruchid to immune. Correlation analysis indicated that seed size, weight and
protein content of cowpea genotypes have no influence on the relative susceptibility to
Callosobruchus maculatus. Comparatively least susceptible genotypes were IC202784,
IC212872, IC4506 and IC198701 while highly susceptible genotypes were IC214757,
IC198361 and Mumbai local and rest of all were moderate to highly susceptible to bruchid
infestation.
 
Date 2016-11-07T19:11:09Z
2016-11-07T19:11:09Z
2010
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/84323
 
Format application/pdf
 
Publisher UAS, Dharwad