Abstract:
Forty niungbean genotypes was evaluated during February. 2008 to May, 2008 at
Sher-e-Bangla Agricultural University farm to identify genotypes to be utilized in
mungbean breeding for the improvement of economic traits. I-Ugh variance was
observed for days to maturity, branches per plant, pods per plant. seeds per pod.
seed yield per plant, biological yield per plant and harvest index. Seed yield per
plant showed significantly positive correlation with branches per plant. pods per
plant, biological yield per plant and harvest index. Negative association of
biological yield with harvest index showed physiological inefficiency for
appropriate partitioning of total dry matter towards economic yield, consequently
the accessions with low grain yield attained low harvest index. The gcrmplasm
accessions were grouped into six clusters on average linkage basis. First three
principal components (PCs) with eigen values > I contributed 71.47% of the
variability amongst the accessions. The populations with greater PC1 values were
high yielding, late maturing and were characterized by high number of branches
with more pods. The second component was strongly associated with earliness.
more number of seeds and high harvest index. Green seed coat color and shiny
seed luster proved their importance in selection for improving most of the yield
contributing traits.
Description:
A Thcsis
Submitted to the Faculty of Agriculture.
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirenients
for the degree of
MASTER OF SCIENCE
IN
GENETICS AND PLANT BREEDING
SEMESTER: JULY-DECEMBER, 2008
