A diallel analysis of yield and yield components of some tomato genotypes grown in arid conditions [electronic resource].

Includes reference.

Six tomato cultivars (Strain B, Pakmorc VF, Super Marmand, Shohba, Indian and Tnshet Star) were evaluated and crossed in a diallel system in one direction. The twenty-one Fl and parental genotypes were grown during the summer seasons of 2003 and 2004 to evaluate general and specific combining abilities and to estimate heritability and heterosis values for yield traits (average fruit weight, number of fruits per plant, early yield and total yield). The results proved the existence of marked heterosis, either over the mid-parental value or that of the better parent for yield and yield components. Estimation of heritability percentages in broad and narrow sense indicated that additive gene effects appeared to be relatively more important in the inheritance of average fruit weight.

Summary in Arabic.

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