Volume 11, Issue 1 (spring 2007)                   JWSS 2007, 11(1): 201-214 | Back to browse issues page

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J. Ahmadi, S.F.Orang, A.A. Zali, B. Yazdi – Samadi, M. R. Ghannadha, A. R. Taleei. Study of Yield and its Components Inheritance in Wheat under Drought and Irrigated Conditions. JWSS. 2007; 11 (1) :201-214
URL: http://jstnar.iut.ac.ir/article-1-657-en.html
Abstract:   (19438 Views)
Generation mean analysis (GMA) was used to study the type of gene action and inheritance of grain yield and its components. Generation mean analysis with joint scaling test was performed. This research was conducted at research farm of college of Agriculture at the University of Tehran. The parents and their progenies ( F1, F2, BC1 & BC2) in three mating groups ( Sardari × 7007, Sardari × 7107& 7107 × 5593) were produced and planted using a randomized complete block design with four replications for each mating group. Of four replications in each experiment, two replications for drought and two replications for non-drought condition were used. The eight traits which were evaluated included grain yield, plant height, plant weight, tiller number, spike length, grains per spikes and 100 grain weight. Most of the genetic parameters including mean (m), additive (d), dominant (h), additive × additive [i], additive × dominant [j], and dominant × dominant[l] effects were significant. However, all gene effects were not significant in all traits.The dominant gene effect was the most contributor factor to inheritance of the majority of traits. For the majority of the traits, additive gene effect was significant, but its magnitude was less than dominant gene effect. Also the dominant × dominant[l] epistasis was more important than additive× additive [i] epistasis. The degree of dominance in most of traits indicated the predominance of dominant gene effects.
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Type of Study: Research | Subject: Ggeneral
Received: 2008/01/9 | Published: 2007/04/15

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