Abstract:
A field experiment was conducted in the experimental field of Sher-e- Bangla Agricultural University,
Dhaka, Bangladesh to study the correlation between pairs of different characters and the direct and
indirect effect of different characters on seed yield plant
-1
in seven selected genotypes of Brassica rapa L.
to select the plants with higher yield potential. Yield plant
-1
was highly significant and positively
correlated with days to 50% flowering (r
g
= 0.987** and r
p
= 0.989**) and 80% maturity (r
= 0.989**
and r
= 0.990**) at both genotypic and phenotypic level while the correlation was significant and positive
with plant height (r
p
g
= 0.802* and r
p
= 0.812*) and thousand seed weight (r
g
= 0.770* and r
= 0.768*)
indicating dependence of these characters on grain yield. Path coefficient analysis for yield plant
revealed that days to 80% maturity (7.9587) exerted the highest direct effect on the yield followed by days
to 50% flowering (5.4155) and plant height (2.4601). The indirect contribution of component characters
viz. days to 80% maturity was high indirect effect via days to 50% flowering (5.3693) followed by number
of secondary branches plant
-1
via days to 80% maturity (4.0874) towards seed yield plant
. Thus, the yield
plant
-1
in selected B. rapa genotypes could be improved by direct selection based on these traits.
