Abstract:
A field experiment was conducted in the experimental field of Sher-e-Bangla
Agricultural University to find out the effect of transplanting date on yield and seed
quality of T. aman rice varieties. cultivated during aman season (July 2019 to
December 2019). The experiment comprised two factors viz, factor A: Variety – 3, i)
V
1
= BRRI dhan32, ii) BRRI dhan62 and iii) V
3
= BRRI dhan80; factor B: Date of
transplanting – 4, T
1
= 01 July; T
2
= 15 July; T
3
ii
= 30 July and T
4
= 15 August. The
experiment was laid out in Randomized Complete Block Design (RCBD) with three
replications. Data were collected on different aspects of growth, yield attributes, yield
and seed quality of T. aman rice. Results revealed that, BRRI dhan32 gave the highest
grain yield (5.01 t ha
-1
) and maximum seed germination percentage (87.06%). This
may be attributed to the maximum number of effective tillers hill
-1
(14.83), longest
panicle (28.64 cm), the highest number of filled grains panicle
- 1
(114.16), highest
1000-grain weight (23.84 g) and highest vigor index (2067.54) in this variety. Out of
4 dates of transplanting treatment, T
3
(Transplanting on 30 July) produced the highest
grain yield (5.23 t ha
-1
) and maximum seed germination percentage (90.95%). This
treatment also showed the maximum number of effective tillers hill
-1
(14.99), longest
panicle (28.35 cm), the maximum number of filled grains plant
-1
(119.59), highest
weight of 1000-seed (24.23 g) and highest vigor index (2232.91). Regarding the
interaction of variety and date of transplanting, the interaction of V
1
T
3
(BRRI dhan32
when transplanting on 30 July) was the highest yielder (5.82 tha
-1
) among the other
interactions which was attributed to higher 1000-seed weight. Besides this, the
interaction V
1
T
3
also gave maximum seed germination percentage (92.89%) and
highest vigor index (2377.98). Considering the above result, it may be concluded that
BRRI dhan32 transplanting on 30 July was found superior in producing the highest
yield and best quality seed production.
Description:
A Thesis
submitted to the Institute of Seed Technology,
Sher-e-Bangla Agricultural University, Dhaka
in partial fulfilment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
SEED TECHNOLOGY
