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Genetic analysis of grain yield and its associated traits in diverse salt tolerant rice genotypes under coastal salinity condition

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Title Genetic analysis of grain yield and its associated traits in diverse salt tolerant rice genotypes under coastal salinity condition
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Creator Not Available
 
Subject Advanced breeding lines, correlation, heritability, principal component analysis, salinity
 
Description Not Available
A set of eighty-two salt-tolerant rice genotypes were evaluated under
coastal salinity conditions for estimating genetic variability, correlation,
and PCA in ten quantitative traits. Among the traits, grains per panicle
recorded the highest Phenotypic Coefficient of Variation (PCV) and
Genotypic Coefficient of Variation (GCV) values, while days to maturity
had the lowest PCV and GCV values. Heritability in broad sense was
highest for grain yield followed by panicle length, per cent fertility,
days to 50 per cent flowering and days to maturity. High heritability
coupled with high genetic advance as percent of mean was observed
for grains per panicle, per cent fertility and grain yield. Characters
viz. panicle length, grains per panicle, per cent fertility and test weight
showed positive and significant correlation with grain yield, whereas
days to 50 per cent flowering and maturity days showed a significant
and negative correlation with grain yield. Principal Component
Analysis (PCA) of ten characters presented 3 principal components
with eigen values greater than one, which accounted for 68.44% of
the total variation. PCA revealed that five quantitative characters
viz., per cent fertility, number of tillers, number of productive tillers,
plant height and grain yield significantly influenced the variation in
these cultivars. The present work identified the presence of sufficient
amount of genetic variability for all the traits in the studied genotypes.
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Date 2021-07-22T11:07:18Z
2021-07-22T11:07:18Z
2020-12-26
 
Type Research Paper
 
Identifier Manohara KK, S Morajkar and Y Shanbagh 2020. Genetic analysis of grain yield and its associated traits in diverse salt-tolerant rice genotypes under coastal salinity condition. Journal of Cereal Research 12(3):290-296. http:// doi.org/10.25174/2582-2675/2020/105442
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http://krishi.icar.gov.in/jspui/handle/123456789/49410
 
Language English
 
Relation Not Available;
 
Publisher Society for advancement of wheat and barley research