Abstract:
The investigation was carried out under field conditions to characterize
eighteen advanced aus rice lines (F
) during the period of transplanting aus
season (2015-2016) at the experimental field of Sher-e-Bangla Agricultural
University, Dhaka-1207. The eighteen genotypes of rice were characterized for
10 quantitative and 31 qualitative traits. All the genotypes were characterized
and categorized as per the descriptors developed by Biodiversity International,
IRRI and WARDA-2007 for DUS test of inbred rice. Among the qualitative
characteristics, no variation was observed in case of anthocyanin coloration of
leaf sheath, penultimate leaf ligule shape, microscopic observation of pollen
with I
2
5
-KI solution, anthocyanin coloration of lemma and palea, anthocyanin
coloration of nodes, anthocyanin coloration of internodes, color of stigma,
awns in the spikelet and decorticated grain aroma. Among all the quantitative
characters, characters like panicle length, thousand grain weight, number of
effective tillers per plant, culm length, time of maturity and grain length
provided better agronomic performance which resulted in ultimate higher yield
per plant. The average days to maturity was 111 days and the average culm
length of the tested genotypes was 79.57 cm and most of the genotypes resulted
in early maturity and lodging resistance. The most of the genotypes showed
average panicle length 24.33 cm and average thousand grain weight 22.67gm
resulted in higher yield per plant. These G1, G3, G6, G8, G9, G10, G12, G16
and G18 were the most promising lines in respect of yield and quality which
could be released as variety in future.
Description:
A Thesis
submitted to the Institute of Seed Technology,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE
IN
SEED TECHNOLOGY
SEMESTER: JANUARY-JUNE, 2016
