Abstract:
The experiment was carried out at the research farm of Bangladesh Rice
Research Institute (BRRJ). Gazipur. The study was conducted during
November. 2005 to May. 2006 (E3oro season) to obtain information on
variability and genetic diversity for yield and yield contributing characters.
Significant variation among the genotypes were observed for all the characters.
High heritability along with high genetic advance in percent of mean was
observed for pamcle per plant, fertile grain per panicle. So these characters
would be best for selection. Diversity was estimated by cluster distance.
Significant variations were observed among the genotypes for all the studied
parameters. Multivariate techniques were used to classify the forty genotypes
of boro rice and is five clusters were formed. (luster Ill had maximum 21
genotypes and cluster I and IV had only one genotype respectively. The highest
intra-cluster distance was observed in cluster III followed by cluster II. The
highest inter-cluster distance was observed between the cluster IV and V and
the lowest was between the cluster II and Ill. The characters such as yield per
plant, days to 50% flowering, days to maturity were the important components
of genetic divergence among the forty boro rice genotypes. Analyzing diversity
pattern and other agronornic performance, the inter genotypic crosses between
031 and 65. 631 and 034: 01 and 026: G I and 65, G I and G34 may be used
for future hybridization program.
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
IN
GENETICS & PLANT BREEDING
SEMESTER: JULY-DECEMBER, 2006
