Variability and comparative analysis among advanced generations of Brassica rapa L.

摘要

Variability and comparison analysis among the fifteen F 4 population considering different morphological attributes of Brassica rapa obtained through inter-varietal crosses were evaluated in randomized complete block design with three replications in the experimental farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during October 2012-March 2013 to find out the best genotype as well as trait for improving the yield in future. Highly significant variation was observed among the genotypes for almost all of the characters studied. The cross combination SAU sarisha 1 x SAU sarisha 3 performed the best for highest yield per plant along with most of the traits. So it can be used for developing superior genotypes. The number of secondary branches per plant exhibits the highest value for heritability while the primary branches per plant shows lowest value. Yield per plant, thousand seed weight, siliquae length, days to 50% flowering, days to 50% maturity and plant height showed moderate heritability. Hence selection based on this character will be judicious and effective for future B. rapa breeding program.