Abstract:
A field experiment was conducted with four hybrids (Gold, Moyna, Shuborna 3
and BRRI hybriddhan 4) and three inbred rice varieties (BRRIdhan 56, BRRI dhan
57 and BRRIdhan 62) in the Research Farm of Sher-e-Bangla Agricultural
University, Sher-e-Bangla Nagar, Dhaka, with a view to evaluating their
performances. The experiment was laid out in Randomized Complete Block
Design with three replications. Significant variation was found among the selected
inbred and hybrid rice varieties in respect of their different growth and yield
characters. Among the seven rice varieties, inbred BRRIdhan 62 was found
inferior considering above characters. All the hybrid varieties contained higher
amount of chlorophyll in their flag leaf at flowering to maturity compared to the
inbred. BRRI hybriddhan 4 exhibited superiority over the rest hybrid and inbred
varieties in different growth parameters like plant height, tillers hill-1, leaves hill-1,
total dry matter hill-1, leaf area hill-1, leaf area index, crop growth rate and panicle
length. BRRI hybriddhan 4 also showed superiority in case of yield parameters
such as panicles hill-1(14.27), filled grains panicle-1(168.43), 1000- grain weight
(26.07 g), biological yield (13.33 t ha-1) and grain yield (6.13 t ha-1). Rest of the
hybrid varieties viz. Shuborna 3 (5.60 t ha-1), Gold (5.15 t ha-1) and Moyna (4.86 t
ha-1) also provided higher grain yield compared to BRRIdhan 56 (4.63 t ha-1) and
BRRIdhan 57 (4.25 tha-1). Panicles hill-1, filled grains panicle-1 and 1000- grain
weight mainly contributed to the higher grain yield of the hybrid varieties over the
inbred.
Description:
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements
for the degree
of
MASTER OF SCIENCE (MS)
IN
AGRICULTURAL BOTANY
SEMESTER: JANUARY- JUNE, 2015
