| dc.description.abstract | An experiment was conducted at the research field of Crop Physiology and
Ecology during June to December 2018, Hajee Mohammad Danesh Science and
Technology University (HSTU), Dinajpur, Bangladesh to investigate the
comparative study on morphological, phenological and yield attributes of some Aman
rice varieties. BINA dhan7, BRRI dhan56, BRRI dhan62, BRRI dhan71 and BRRI
dhan72 were imposed in 20 plot. Different varieties showed significant variation
due to booting, heading, anthesis stage, leaf dry matter, stem dry matter, leaf area
hill-1
, crop growth rate and net assimilation rate, leaf area index, number of leaves
hill-1
and plant height, number of total tillers hill-1
, productive tillers hill-1
, panicle
length, grains panicle-1
, fertile grains panicle-1
, sterile grains panicle-1
, test weight,
grain yield, straw yield and biological yield. Among the five HYV varieties BRRI
dhan72 showed better over rest of the varieties. The highest time require for
booting (61.75 days), heading (67.12 days), anthesis (71.75 days), leaf dry matter
(13.14 g), stem dry matter (15.45g), leaf area hill-1
, crop growth rate (18.14 gm-2
d
-
1
) and net assimilation rate (8.93 gm-2
d
-1
), leaf area index, number of leaves hill-1
,
number of leaves hill-1
(48.75), number of total tillers hill-1
(22.3), productive
tillers hill-1
(19.3), panicle length (33.17cm), grains panicle-1
(203.25), fertile
grains panicle-1
(192.2), test weight (28.10g), grain yield (6.29 tha-1
), straw yield
(7.42 tha-1
), biological yield (13.71 tha-1
) and minimum sterile grains panicle-1
(10.05) were produced by BRRI dhan72 among five elite Aman varieties.
Whereas the lowest values for above characters were found in BRRI dhan62. | en_US |
