Abstract:
A field experiment was conducted with 29 genotypes of blackgram (Vigna mungo L.)
at the experimental field of Sher-e-Bangla Agricultural University, Dhaka to study the
character association and genetic diversity during August to November 2019. The
genotypes were found significantly different among them for all the characters
studied. Comparatively phenotypic variances were higher than the genotypic
variances for all the characters examined. Plant height, number of branches per plant,
days to first flowering, days to 50% flowering, days to 80% maturity, number of pods
per plant, 100 seed weight and yield per plant showed high broad base heritability.
The significant positive correlation with seed yield per plant was found in number of
branches per plant (G = 0.519**, P = 0.342**), pod length (G = 0.732**, P =
0.367**), number of pods per plant (G = 0.758**, P = 0.709**), number of seeds per
pod (G = 0.691**, P = 0.354**) and 100 seed weight (G = 0.240*, P = 0.223*). Path
co-efficient analysis revealed that plant height, number of branches per plant, days to
50% flowering, days to 80% maturity, pod length, number of pods per plant, number
of seeds per pod and 100 seed weight had the positive direct effect on yield per plant
whereas, days to first flowering had the negative direct effected. The genotypes were
grouped into five clusters. The highest inter-cluster distance was observed between
clusters I and V (60.988) and the maximum intra-cluster distance was found in cluster
IV (0.256). Considering group distance diversity pattern and other agronomic
performance, the lines G16 (BD-6861), G27 (BARI-4) and G28 (BARI-1) could be
considered as suitable genotypes for fruitful hybridization in future.
Description:
A Thesis
submitted to Institute of Seed Technology
Sher-e-Bangla Agricultural University, Dhaka
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
INSTITUTE OF SEED TECHNOLOGY
