EFFECT OF SEEDLINGS PER HILL ON YIELD AND YIELD COMPONENTS OF HYBRID AND INBRED RICE VARIETIES
Date
2015-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
DEPARTMENT OF AGRONOMY
Abstract
The experiment was conducted at the farm of Sher-e-Bangla Agricultural University,
Sher-e-Bangla Nagar, Dhaka during the period of July to November 2014 to find out
the effect of seedlings hill
-1
on yield and yield components of hybrid and inbred rice
varieties. The experiment comprised of two factors. Factor A: Rice variety (2)
designated as V
1
: Hybrid (Chamak); V
2
: Inbred (BRRI dhan62) and Factor B: Number
of seedlings hill
-1
(5 levels) named as S
1
: 1 seedling hill
-1
, S
2
: 2 seedlings hill
: 3
seedlings hill
-1
, S
4
: 4 seedlings hill
-1
and S
5
: 5 seedlings hill
-1
. The experiment was laid
out in split-plot design with three replications. Experimental results showed that
varieties had the significant effects on plant height, number of tillers hill
, dry weight
hill
-1
, total tillers hill
-1
, panicle length, number of filled and unfilled grains per panicle,
1000 seed weight, grain yield, straw yield and harvest index. The highest grain yield
(4.06 t ha
-1
) was observed from Chamak (hybrid) while the BRRI dhan62 (Inbred)
gave the lowest grain yield (3.04 t ha
-1
-1
). The highest straw yield was observed from V
1
(4.67 t ha
-1
) and the lower straw yield was recorded from V
2
(4.21 t ha
). Number of
seedlings hill
-1
also significantly affected all the parameters under study. The
maximum number of effective tillers hill
-1
was found from S
2
(12.20), whereas the
minimum number of effective tillers hill
-1
from S
5
(10.27). The highest grain yield was
found from S
2
(4.10 t ha
-1
), whereas the lowest grain yield from S
5
-1
(2.93 t ha
). The
highest straw yield was found from S
2
(4.80 t ha
-1
), whereas the lowest straw yield
from S
5
(4.14 t ha
-1
) which was statistically similar to S
4
(4.21 t ha
). In case of
interaction effect of varieties and number of seedlings hill
-1
, the highest grain yield
was recorded from the combination of V
1
S
2
(4.74 t ha
-1
) and the lowest grain yield
was found from V
2
S
5
(2.55 t ha
-1
) which was statistically similar with V
2
(3.79 t
ha
-1
). From the above results it was appeared that Hybrid (Chamak) variety provided
best yield with 2 seedlings per hill
.
-1
-1
S
3
-1
-1
, S
3
Description
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfilment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
AGRONOMY
SEMESTER: JANUARY-JUNE, 2015
Keywords
HYBRID AND INBRED RICE VARIETIES