Abstract:
The experiment was conducted at the experimental Farm. Sher-e-Bangla Agricultural
University, Sher-e-Bangla Nagar. Dhaka. Bangladesh during July 2011 to December
2011. Six advanced NPT lines of rice AL-36, AL-29, Richer, AL-52, BRRI dhan49 and
BRRI dhan-57 were evaluated. Highly significant variations were found among the
advanced lines for all the characters studied. The tallest plant height was recorded from
advanced line of AL-52. The longest panicle, maximum yield/rn2 and yield/ha were
recorded from advanced NPT line AL-29, maximum number of unproductive tillers per
plant and productive tillers per plant were recorded from I3RRl dhan-49 whereas the
maximum number of empty grain per panicle was recorded from AL-36. All the lines
showed significant positive correlation in case of plant height, panicle length and number
of eflëctive tillers per plant with yield. Plant height showed highly significant and
positive relationship with panicle length and 1000 grain weight. Maximum hulling (%)
and milling outturn (%) were recorded from AL-36. Longest length of rough rice, milled
rice and highest head rice recovery (%) were obtained from Richer. Grain breadth of
rough rice and grain breadth of milled rice were highest in BRRI dhan-57. AL-52
showed the highest value in case of length/breadth ratio of rough rice, grain length of
brown rice, length/breadth ratio of brown rice and length/breadth ratio of milled rice.
Correlation coefficient analysis showed significant positive correlation between hulling
and milling percent. In this study, maximum 5 lines had been grouped into long slender
and one check (BRRI dhan-57) into medium slender. Among the six lines, all showed
clear-cut translucent endosperm appearance. Richer showed the longest length and
highest length/breadth ratio of cooked rice where checks showed lowest. AL-36
responded to maximum volume expansion where minimum volume expansion was
recorded from AL-52 and BRRI dhan-57. Highest alkali spreading value was recorded
from Richer and AL-52 which was in the range of ASV (4-6) that was intermediate alkali
digestion and intermediate gelatinization temperature which was preferable to the
consumers for it's medium cooking time.
Description:
A Thesis
Submitted to the Department of Genetics and Plant Breeding,
Sher-e-Bangla Agricultural University, Sber-e-Bangla Nagar, Dhaka-1207
in partial fulfillment of the requirements for the degree of
MASTER OF SCIENCE
GENETICS AND PLANT BREEDING
