Abstract:
An experiment was conducted to study the genetic variability analysis based on different
yield contributing and quality traits of Mungbean genotypes in Sher-e-Bangla Agricultural
University, Dhaka-1207 and Bangladesh Council of Scientific and Industrial Research,
Bangladesh during Rabi season (2019). In case of morphological traits, analysis of variance
revealed significant differences among all the genotypes for all the characters. Number of pod
per plant showed highest range of variation (53.67-16). That means wide range of variation
present for this character .High heritability coupled with high genetic advance in percent of
means were observed number of cluster per plant, number of pod per plant, pod length,
number of seed per pod, thousand seed weight. The significant positive correlation with grain
weight per plant was found in number of cluster per plant, number of pod per cluster, pod
length, thousand seed weight at genotypic level and phenotypic level, number of pod per
plant at phenotypic level. Path co-efficient analysis showed that number of per pod per plant,
pod length, number of seed per pod, thousand seed weight had significant positive direct
effects on yield. It had also significant positive correlation with yield. The maximum inter
cluster distance was observed between the cluster I and V indicating genotypes from these
two clusters if involved in hybridization may produce a wide spectrum of population. In case
of eleven qualitative traits, the analysis of variances showed significant mean squares for
different characters that indicated the presence of sufficient variation among the genotypes
for all the characters. High heritability coupled with high genetic advance in percent of means
were found for all traits. The significant positive correlation with protein percentage was
found in fiber at genotypic and phenotypic level. Path co-efficient analysis showed that
potassium %, and phosphorous % had direct positive effect on protein % and fiber had
significant positive correlation with matter protein %. The highest inter genotypic distance
was observed between G1 and G7. Considering group distance and other agro-morphological
and qualitative performance, genotypes G4 and G6 found to be potential for future
hybridization program in the response of increase yield and hybridization between G1 and
G15 respond to increase nutrient content.
Description:
A thesis
Submitted to the Faculty of Agriculture
Sher-e-Bangla Agricultural University, Dhaka
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE
IN
GENETICS AND PLANT BREEDING