ASSESSMENT
OF BREEDING POTENTIAL OF RAPESEED GERMPLASM USING D2 ANALYSIS
S.
Parveen, M.H.Rashid*, M.S.R. Bhuiyan
*Corresponding
author; E-mail:sumonsau@gmail.com
Abstract
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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Return Volume: Journal of
Experimental Biosciences 6(1): January 2015
