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CORRELATION, PATH ANALYSIS AND GENETIC DIVERSITY IN AMAN RICE (Oryza saliva L)

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Title CORRELATION, PATH ANALYSIS AND GENETIC DIVERSITY IN AMAN RICE (Oryza saliva L)
 
Creator SARWAR, GOLAM
 
Subject AMAN RICE
 
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 AND PLANT BREEDING
The experiment was conducted with forty two genotypes of rice at the experimental
farm of Sher-e-Bangla Agricultural University, l)haka during the period of JulyDecember.
2013 to estimate the genetic variability, correlation, path and diversity
among the genotypes. The experiment was conducted using Randomized Complete
Block Design with three replications. All the genotypes varied significantly with each
other for all the studied characters indicated the presence of considerably variations
among the genotypes studied. The PCV values were higher than the respective CCV
values for all the characters under study except unfilled grains per panicle indicating
that the characters were less influenced by the environment. Total tillers per plant
effective tillers per plant tilled grains per panicle, unfilled grains per panicle and
yield per plant showed high heritability along with high genetic advance as percentage
of mean were normally more helpful in predicting the genetic gain under selection.
From the correlation and path analysis it was revealed that total tillers per plant
cflèctive tillers per plant and days to maturity showed significantly positive gcnotypic
correlation with yield as well as employed positive direct effect on yield suggesting
that the selection for these traits would helpful for the improvement of yield per plant.
As PCA, D2 and clusters analysis the genotypes were grouped into five diflèrent
clusters. Clusters IV had the maximum fourteen and cluster Ill had the minimum three
genotypes. The highest inter-cluster distance was observed betwecn II and Ill and the
lowest was observed between IV and V. The highest and lowest intra-cluster distance
was observed in Ill and IV respectively. Genotypes included in cluster V were
important for total tillers per plant, eflbctive tillers per plant days to 50% flowering
and thousand grains weight cluster III were important for filled grains per panicle and
unfilled grains per panicle. cluster IV were for plant height and yield per plant
Considering the diversity pattern and other agronomic performances, the genotypes
Special from AL-29. AL-36, PP.413(i). AL-17(iii)B, AL-17(iii). AL-17(ii)A. Special
from-129, Special from 17(iv), AL44(i), AL-li, Special from AL-36(D). PP48. IR25B,
Special from AL-33. 114-2513 (Tall), P-58 (ii) might be considered better parents
for the future efficient hybridization programme.
 
Date 2018-11-17T09:38:46Z
2018-11-17T09:38:46Z
2013-12
 
Type Thesis
 
Identifier http://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/929
 
Language en
 
Format application/pdf
 
Publisher Department of Genetics and Plant Breeding, Sher-e-Bangla Agricultural University, Dhaka-1207