ESTIMATION OF HETEROSIS , GENE ACTION AND GENOTYPIC AND PHENOTYPIC CORRELATION IN FABA BEAN (Vicia faba L.)
Mesopotamia Journal of Agriculture,
2012, Volume 40, Issue 1, Pages 85-99
AbstractFour varieties of faba bean viz, (1-French (aguadulce) , 2-Syrian (shami) , 3-Spain and 4-Holland) were used in a Complete Diallel Crosses , during growing season 2008/2009. Genotypes (parents and F1s hybrids) were sowing in the Field Dept. of Hort. & Landscape Design , College of Agric. & Forestry , Mosul University , during growing season 2009/2010 , by using Randomized Complete Block Design (R.C.B.D) with three replications , aimed to evaluate performance of hybrids and their parents for identify promising hybrids and estimate heterosis , gene action , heritability , genetic advance , phenotypic and genotypic correlation for studied characters. Results showed that parents and F1s were significantly different for all studied characters , the parent French was significantly higher in green pods , seed and biological yield. Whereas the hybrid 1x3 was characterized by the highest for green pods yield and biological yield , and the hybrid 1x2 for the seed yield. The hybrids showed significant superiority over parents means for all the studied characters , the hybrid 3x2 was significantly higher than other for heterosis in green pods yield and biological yield , and the hybrid 1x2 for the seed yield. Significant additive variance were found for all studied characters. Narrow sense heritability was higher for: plant height , 100 seed weight , green pods yield and biological yield which indicated additive gene action for these characters. Over dominance were found for all studied characters except: plant height , no. of branches per plant and 100 seed weight. The higher phenotypic and genotypic correlations was found between average pod weight and green pods yield.
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