Abstract:
A field experiment was conducted at the Research Farm of Sher-e-Bangla
Agricultural University, Sher-e-Bangla Nagar, Dhaka, from July to December,
2018 (Aman season) with six traditional (Chinigura, Dulabhog, Chiniatop, Begun
Bichi, Badshabhog and Kalizira) and four modern rice varieties (BRRIdhan34,
BRRI dhan37, BRRI dhan38 and BRRIdhan50) with a view to assessing their
performances. The experiment was laid out in Randomized Complete Block
Design with three replications. Significant variation was found among the selected
traditional and modern rice varieties in respect of their different growth and yield
contributing characters. Among the ten rice varieties, traditional Begun Bichi was
found inferior in case of grain yield. All the modern aromatic varieties contained
higher amount of chlorophyll in their flag leaf at flowering to maturity compared
to the traditional one. BRRI dhan50 exhibited superiority over the rest modern and
traditional aromatic varieties in different growth parameters like leaf area index,
tillers and leaves hill
-1
at reproductive stages. BRRI dhan50 also showed
superiority in case of yield parameters such as effective tillers hill
panicle length (25 cm), filled grains panicle
-1
(108), 1000-grain weight (23.57 g),
biological yield (10.26 tha
-1
) and grain yield (5.99 tha
-1
). Rest of the modern
varieties viz. BRRI dhan38 (3.85 tha
1
1
-1
-1
), BRRI dhan37 and BRRI dhan34 (3.62 tha
) also provided higher grain yield compared to traditional Badshabhog (2.13 tha
), Dulabhog (1.75 tha
-1
), Chinigura (1.69 tha
-1
), Kalizira (1.56 tha
), Chiniatop
(1.49 tha
-1
), and Begun Bichi (1.11 tha
-1
). Effective tillers hill
, filled grains
panicle
-1
and 1000-grain weight mainly contributed to the higher grain yield of the
modern aromatic rice varieties over the traditional varieties.
-1
-1
(23.53),
-
-
Description:
A Thesis
Submitted to the Institute of Agricultural Botany
Sher-e-Bangla Agricultural University, Dhaka
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE
IN
AGRICULTURAL BOTANY
SEMESTER: JULY-DECEMBER, 2017
