Genetic Variability and Path Analysis in Groundnut (Arachis hypogaea L.)
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Date
2012
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Publisher
MPUAT, Udaipur
Abstract
The present investigation entitled “Genetic variability and Path analysis in groundnut
(Arachis hypogaea L.)” was conducted with 27 genotypes including 2 checks during Kharif-
2011 at the Instructional farm, College of Technology and Agriculture Engineering,
Maharana Pratap University of Agriculture and Technology, Udaipur. The genotypes were
planted in a randomized block design with three replications.
The observations were recorded for 15 characters viz., days to 50% flowering, days to
maturity, plant height, number of branches per plant, number of pegs per plant, number of
matured pods per plant, dry pod yield per plant, kernel yield per plant, 100-kernel weight,
sound mature kernel, shelling Out Turn, biological yield per plant, harvest index, seed oil
content and seed protein content on five randomly selected plants from each genotype under
all replications for all the above characters except days to flowering and days to maturity
where entire population of the entry was considered and average value was subjected to
analysis of variance, estimation of variability parameters, correlation and path coefficient
analysis.
Analysis of variance revealed significant differences among the genotypes for all
characters suggesting sufficient amount of variability in the experimental material under
study. Dry pod yield per plant, kernel yield per plant, number of mature pods per plant, 100-
kernel weight, number of pegs per plant, number of branches per plant and harvest index
showed high GCV, high heritability and high genetic gain. Therefore, selection can be
practiced for their improvement.
Association study indicated that dry pod yield per plant was positively and
significantly correlated at both genotypic and phenotypic level with number of pegs per plant,
number of mature pods per plant, kernel yield per plant, biological yield per plant and harvest
index.
Path analysis for dry pod yield per plant and kernel yield per plant revealed that
number of pegs per plant, number of mature pods per plant, kernel yield per plant and
biological yield per plant were the major components for dry pod yield per plant likewise,
number of pegs per plant, number of mature pods per plant, and dry pod yield per plant were
major components for kernel yield per plant.
Dry pod yield per plant, kernel yield per plant, number of mature pods per plant, 100-
kernel weight, number of pegs per plant and number of branches per plant had high GCV,
high heritability and high genetic gain; therefore, selection should be practiced for their
improvement. The genotypes UG-103 and UG-104 expressed higher number of pods per
plant while genotypes UG-95 and UG-90 showed higher 100- kernel weight in the present
material. Hence these lines can be utilized in hybridization programmes to screen out a
genotype having higher number of pods per plant as well as 100- kernel weight by selection
in segregating population.
Description
Genetic Variability and Path Analysis in Groundnut
(Arachis hypogaea L.)
Keywords
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Citation
Choudhary and Sharma, 2012