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GENETIC DIVERSITY FOR YIELD AND QUALITY TRAITS IN COWPEA [Vigna Unguiculata (L.) WALP.]

KrishiKosh

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Title GENETIC DIVERSITY FOR YIELD AND QUALITY TRAITS IN COWPEA [Vigna Unguiculata (L.) WALP.]
M.Sc.
 
Creator SANDEEP KUMAR SINGH
 
Contributor Shri Dhar
 
Subject Cowpea, genetic variability, correlation, path analysis, yield component, nutritional quality traits.
 
Description T-8802
Genetic variability, heritability, genetic advance, correlation and path coefficient for 13
yield contributing traits and 5 nutritional traits were studied in 36 genotypes of cowpea.
The study indicated existence of considerable amount of genetic variability for all the
characters studied. The mean range was recorded for traits viz., days to 50% flowering
(32.3-55.6), number of pods/plant (12.57-46.47), number of seeds/pod (7.70-19.47),
pod weight (5.87-13.75), pod yield/plant (95.73-290.11g) with the Maximum pod
yield/plant was noted in Vijayanthi while least in CP-13 whereas the highest pod
yield/ha was recorded in genotype CP-5 (141.74 q/ha). The highest protein rich
genotype was recorded as Pusa Sukomal (6.43%) while least in CP-47 (2.35%). The
highest calcium rich genotype was CP-24 (214.67 ppm) while lowest was Vijayanthi
(70.33ppm). The highest iron rich genotype was recorded as Vijayanthi (139.31ppm)
while least in CP 35-1 (26.34 ppm). The richest genotype for zinc content was observed
as Vijayanthi (82.37ppm) while least was CP-14 (17.21ppm). The richest genotype for
antioxidant capacity (μmol trolox equivalent) in fresh pod (dry weight basis) was
observed as Vijayanthi (9.37) while least was Pusa Sukomal (5.01). The highest
phenotypic coefficient of variation (PCV) and Genotypic Coefficient of Variation
(GCV) were recorded for number of pod per cluster (50.95 and 45.33), followed by
plant height (37.19 and 36.87) and pod yield/ plant (35.73 and 34.92). Broad-sense
heritability (h2b) values were observed with a range of 41.30% to 89.70%. Number of
seed per pod (41.30%) was the least heritable trait while number of pod/plant (89.70%)
was the most heritable trait. The strong significant positive correlation of pod
yield/plant manifested with number of pods/plant, number of pods/cluster and pod
weight was only due to its direct contribution towards pod yield/ha, there by indicating
a true association and could be taken as a major component trait for the improvement of
pod yield.
 
Date 2016-08-18T14:46:05Z
2016-08-18T14:46:05Z
2013
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/72912
 
Format application/pdf
 
Publisher IARI, Division of Floriculture and Landscaping