Abstract:
The experiment was conducted in the Research Farm of Sher-e-Bangla
Agricultural University, Sher-e-Bangla Nagar, Dhaka to observe the morphophysiological
characteristics and yield of six Amanricevarieties named BRRI
dhan33, BRRI dhan56, BRRI dhan57, BRRI dhan62, Hira-2 and BRRI hybrid
dhan4. The experiment was laid out in Randomized Complete Block Design
with three replications. The hybrid rice variety, BRRI hybrid dhan4 showed
superiority in respect of growth parameters like plant height, number of tillers
hill
-1
, number of leaves hill
-1
, leaf area hill
-1
, LAI,TDM hill
-1
over the other
varieties. Again, BRRI hybrid dhan4 also showed the highest yield contributing
characters like effective tillers hill
-1
(15.04), panicle length (15.24 cm), filled
grain panicle
-1
(141.17), 1000-grain weight (25.16 g) grain yield (6.21 t ha
)
followed by Hira-2 (6.03 t ha
-1
), straw yield (7.18 t ha
-1
), biological yield (13.39
t ha
-1
) and harvest index (46.39 %) over the other inbred varieties. The lowest
grain yield produced by BRRI dhan33 (3.82 t ha
-1
). In case of grain yield BRRI
dhan56 (4.36 t ha
-1
) and BRRI dhan62 (4.29 t ha
-1
) showed statistically similar
result. The yield was higher in BRRI hybrid dhan4 including another hybrid
Hira-2 might be due to the production of higher number of effective tiller hill
,
leaf number, TDM, LAI, panicle hill
-1
, filled grain panicle
-1
and 1000-grain
weight.
