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Genetic variability, heritability, genetic advance and trait correlations in selected sorghum (Sorghum bicolor L. Moench) varieties

Research Paper | November 1, 2017

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ML Jimmy, F. Nzuve, O. Flourence, E. Manyasa, J. Muthomi

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Int. J. Agron. Agri. Res.11( 5), 47-56, November 2017


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Study was carried out to estimate the genetic variability, heritability and genetic advance as well as association between yield and yield related traits in selected sorghum varieties. Ten sorghum varieties were evaluated in randomize complete block design with 2 replicates across two environments. Data were recorded on plant height, days to 50% flowering, number of productive tillers, panicle length, panicle width, panicle weight, 100 seed mass and grain yield. Mean squares were significant (P≤0.05) for all traits in the individual and combined analysis of variance, implying high variation in the sorghum population. Panicle length, panicle width, Dry panicle weight and 100 seed mass could be employed as target traits to improving grain yield. All the traits evaluated exhibited high genotypic and phenotypic components of variance than environmental variance, showing that characters in the population was genetically controlled and can be exploited in breeding programs. High heritability and estimated genetic advance as percentage of mean for most of the traits indicates the presence of additive genes and suggested reliable sorghum improvement through selection for the traits. Grain yield was significant and positively associated with days to 50% flowering, number of fertile tillers, panicle width, dry panicle weight and 100 seed mass.


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