Study of Variability Correlation And Path Analysis in Upland Rice ( Oriza ativa L.)
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Date
1996
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Birsa Agricultural University, Ranchi
Abstract
The variability, correlation and path analysis studies were made in a collection of fifty genotypes with control variety birsa gora 102 of rice (oryza sativa L.) for ten quantitative characters.
Analysis of variance indicated highly significant variations among the genotypes for the characters, days to 50 percent flowering, days to 100 percent flowering. Plant height, length of panicle, number of spikelet per and grain yield per plant.
The range of variation observed in ten characters indicated a wide range of variations within characters. Highest range was observed in character, grain yield per plant and lowest in days to 100 percent flowering.
The coefficient of variation was highest for number of tiller per plant followed by grain yield per panicle and number of spikelet per panicle. Days to 100 percent flowering had the lowest coefficient of variation followed by 1000-grain weight and days to 50 percent flowering.
Phenotypic and genotypic coefficient of variation were high for the characters grain yield per plant, grain yield per panicle, number of spikelet per panicle and number of tiller per plant. The estimates of heritability in broad sense was highest for the character 1000-grain weight followed by day to 100 percent flowering and grain yield per plant. The character number of tiller per plant expressed lowest estimate of heritability.