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- Source: QScience Connect, Volume 2012, Issue 1, January 2012,
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- 09 May 2012
- 19 November 2012
- 01 July 2013
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Gene action for pre and post harvest traits in F2 wheat populations
Research article
Abstract
The inheritance mechanism for plant height, days to heading, spike length, grains spike− 1 and biological yield traits in 8 × 8 half diallel F2 wheat populations was studied at Agricultural University, Peshawar, Pakistan, during 2006-07. The experiment was laid out in randomized complete block (RCB) design having four replications. Each experimental unit was assigned a four-row plot of 5 m length with row-row space of 30 cm. Analyses of variance displayed significant genotypic differences for studied traits. Diallel analyses reflected significance of both additive and non-additive components in the inheritance of these traits, however, genetic components revealed the importance of a non-additive component. The average degree of dominance being greater than unity indicated involvement of over-dominance for phenotypic expression of all traits studied. Broad-sense heritability values were much higher than narrow-sense and thus delayed selection till advance generations are suggested.