6-1-10-Parveen et al


S. Parveen, M.H.Rashid*, M.S.R. Bhuiyan
*Corresponding author; E-mail:sumonsau@gmail.com


The present investigation was carried out at the Experimental Farm, Sher-e-Bangla Agricultural University (SAU), Dhaka during November 2005-March 2006 to assess breeding potential of some rapeseed varieties. All the genotypes were grouped into four clusters based on D2 values, which exhibited no association between geographical and genetic divergence. The intra cluster distance was minimum for cluster IV (0.00) and maximum for cluster III (1.32). The maximum distance at inter-cluster level was between cluster III and IV (541.5) indicating that the genotypes belongings to these groups were genetically most divergent. Genotypes in cluster I showed minimum performance for days to maturity (84.40) and days to first flowering (43.53) and maximum performance for total seed weight (1.81 g plat-1) indicating that genotypes included in this cluster are useful in inducing earliness. Cluster III showed maximum mean value for plant height (89.13 cm), primary branches per plant (7.10), secondary branches per plant (2.32), seeds per siliqua (15.70) and siliqua per plant (92.02) revealing that genotypes in this cluster are beneficial in respect of siliqua number of plant as well as seeds per siliqua and plant height. Cluster IV registered maximum performance for length of siliqua (9.14 cm) and 1000 seed weight (9.54 g). Genotypes belonging to this cluster although showed long maturity period and shattering habit, may be important for having higher length of siliqua and weight of seed.

Keywords: Genetic diversity, germplasm and rapeseed.

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