Character Association and Genetic Divergence in Blackgram [Vigna mungo (L.) Hepper]
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Date
2018
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Publisher
MPUAT, Udaipur
Abstract
Character Association and Genetic Divergence in Black Gram
[Vigna mungo (L.) Hepper]
Turfan Khan* Dr. R. B. Dubey The present investigation entitled “Character Association and Genetic Genetic
Divergence in Black Gram [Vigna mungo (L.) Hepper]’’ was carried out with 60
genotypes (including four checks namely PU31, PU1, KPU405, KPU524-65)
during Kharif- 2017 at the Botany field, Rajasthan College of Agriculture, Maharana
Pratap University of Agriculture and Technology, Udaipur. The genotypes were
planted in randomized block design with three replications.
The observations were recorded for 14 characters viz., days to 50 per cent
flowering, days to 75 per cent maturity, plant height, number of primary branch per
plant, number of cluster per plant, number pod per cluster, number of pod per plant,
pod length, number of seeds per pod, seed yield per plant, 100 seed weight, biological
yield per plant, harvest index and seed protein content on five randomly selected
plants from each genotype in each rows, while days to 50 per cent flowering and days
to 75 per cent maturity were recorded on plot basis and average values were subjected
to analysis variability parameters, correlation coefficients, path coefficients and
genetic divergence.
Estimates of genotypic parameters revealed that differences between the
estimates of GCV and PCV were found high for most of the characters. Higher
estimates of GCV were observed for seed yield per plant, number of pod per plant,
cluster per plant and harvest index. However, maximum heritability was found for
100-seed weight (92 %) followed by number of pod per plant and pod length. While,
maximum genetic gain was observed for number of pod per plant, followed by seed
yield per plant.
Present experimental findings revealed that characters viz., cluster per plant,
number of pods per plant, seed yield per plant and harvest index per cent showed high
* Research Scholar, Department of Plant Breeding & Genetics, RCA, Udaipur
** Prof., Department of Plant Breeding & Genetics, RCA, Udaipur
GCV, heritability and genetic gain. Hence, selection can be made for improvement of
these characters.
Association estimates revealed that seed yield per plant was positively and
significantly correlated at both genotypic as well as phenotypic level with cluster per
plant, number of pods per cluster, number of pod per plant, 100-seed weight,
biological yield per plant, harvest index.
Path coefficient analysis revealed that maximum positive direct effect on seed
yield per plant was exhibited number of cluster per plant followed by number pod per
cluster.
On the basis of present study the genotype KPU1073, KPU1027, KPU1101
and KPU1080 were found to have considerably higher means values for the traits
seed yield per plant and genotypes KPU52-89 (37.33), KPU1097 (37.66) KPU1001
(37.66) shows earliest to flowering. Hence emphasis should be given to utilize these
genotypes in further breeding programme.
On the basis of divergence studies it was concluded that there was no
relationship between genotypes and geographical origin. All genotypes group into
VIII cluster. Maximum inter- cluster distance was between cluster III and VIII and
genotypes of these clusters with per se performance could be utilized in breeding
programmes. Genetically diverse and high yielding genotypes of blackgram
KPU1080, KPU1027 and KPU1073 could be used for breeding programme so as to
ameliorate the productivity of blackgram.
Description
Character Association and Genetic Divergence in Black Gram
Keywords
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Citation
Khan, T. and Dubey R.B.