Abstract:
Fifleen F4 population of Brassica rapa of different cross combinations were evaluated
in randomized complete block design with three replications in the experimental field
of Genetics and Plant Breeding Department, Sher-e-Bangla Agricultural University
farm, Dhaka, Bangladesh. It was conducted during October 2012-March 2013 for
evaluation of variability and comparison among them. Data were collected on the
basis of days to 50% flowering, days to 50% maturity, plant height, number of
primary branches per plant. number of secondary branches per plant, number of
siliquae per plant, number of seeds per siliquac, thousand seed weight and yield per
plant. Highly significant variation was observed among the genotypes for almost all
the characters studied. The cross combination SAL) sarisha 1 x SAU sarisha 3 was
found superior for most of the traits with the highest yield per plant. So it can he used
for developing superior genotypes. From correlation analysis sigiflcant positive
correlation of seed yield per plant were found with plant height, number of primary
branches per plant, number of secondary branches per plant, number of siliquae per
plant, number of seeds per siliquae and thousand seed weight. The results of path
coefficicnt analysis indicated that number of primary branches per plant, number of
siliquae per plant, number of seeds per siliquae and thousand seed weight had the
positive direct effect on seed yield per plant. Uence selection based on this character
would be judicious and effective for future Brassica rapa breeding program.
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
SEMESTER: JANUARY-JUNE, 2014
