Indian Society of Genetics & Plant Breeding

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GENETIC VARIABILITY, CORRELATIONS AND PATH-COEFFICIENTS IN INDICA RICES

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Genetic variability, simple correlations and path-coefficients were studied on eight
quantitative characters in 80 indica rice varieties, including HYV and indigenous high
quality rices in two environments each at two locations during rainy season. Statistical
analyses were done based on character means on pooled data. A wide range of variation
was recorded for most of the characters. Heritability in broad sense was very high for all
the characters except harvest index. Spikelets per panicle and plant height exhibited high
heritability coupled with high genetic advance. Grain yield per plant showed significant
positive correlation with plant height, panicle length, spikelets per panicle, panicle weight,
and test weight. Path-analysis indicated a greater contribution of panicle weight to grain
yield.
 

Keywords: Genetic variability, path-coefficient, harvest index, heritability, genetic advance.

Info

Year: 1993
Volume: 53
Issue: 4
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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