Abstract:
An experiment was conducted at the Experimental Field of Agricultural Botany
Department, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh,
during June, to November, 2019 to evaluate the growth, yield and yield attributing
characteristics of ten Aman rice varieties of Bangladesh namely; BRRI dhan 80,
BRRI dhan 79, BRRI dhan 70, BRRI dhan 56, BRRI dhan 54, BRRI dhan 53,
BRRI dhan 52, BRRI dhan 51, BRRI dhan 41 and BRRI dhan 40. The experiment
was laid out in a Randomized Complete Block Design (RCBD) with three
replicates. Parameters on, growth parameter viz. plant height and number of
tillers hill
-1
(at different days after transplanting); yield contributing characters
such as effective tillers hill
-1
, panicle length, number of grains panicle
, filled
grains panicle
-1
, thousand grain weight, grain yield, straw yield, biological yield
and harvest index were recorded. The plant height and number of tillers hill
at
different days after transplanting varied significantly among the varieties up to
harvest, the tallest plant (123.70 cm) was recorded in BRRI dhan 70 and the
shortest (81.13 cm) was found in BRRI dhan 41. The maximum number of tillers
hill
-1
(45.60) was observed in BRRI dhan 70 and the minimum (20.40) in BRRI
dhan 52. All of the parameters of yield and yield contributing characters differed
significantly at 1% level except grain yield, biological yield and harvest index.
The maximum number of effective tillers hill
ii
-1
(43.76) was recorded in the variety
BRRI dhan 70 while BRRI dhan 40 produced the lowest effective tillers hill
(17.53). The highest (133.81) and the lowest (42.69) number of filled grains
panicle
-1
was observed in the variety BRRI dhan 70 and BRRI dhan 40
respectively. Thousand grain weights were the highest (26.45 g) in BRRI dhan
70 and the lowest (18.88 g) in BRRI dhan 53. Grain did not differ significantly
among the varieties but numerically the highest grain yield (5.01 t ha
) was
found in the variety BRRI dhan 54 and the lowest in BRRI dhan 41 (3.78 t ha
-1
-1
-1
-1
-1
).
Description:
A Thesis
Submitted to the Faculty of Agriculture, Dept. of Agricultural Botany,
Sher-e-Bangla Agricultural University, Dhaka,
In partial fulfilment of the requirements
for the degree of
MASTER OF SCIENCE
IN
AGRICULTURAL BOTANY
SEMESTER: JUNE, 2020
