Estimation of genetic parameters for yield and yield components and some agronomic characters in two crosses of bread wheat (Tritium aestivum l.). [electronic resource].

Includes reference.

Three cuitivars of bread wheat: Sakha 69. Sakha93 and Sakha 94 were crossed in all six generations. P₁, P₂. F₁, F₂, BC₁ and BC₂ were obtained for two crosses;(Sakha 69 x Sakha 93) and (Sakha 93 x Sakha 94) to determine genetic parameters for number of days to heading and maturity, plant height, number of spikes per plant, number of kernels per spike, 100-kernel weight and grain yield per plant. The experiment was conducted at Sakha Agricultural Research Station during the growing seasons 2005/06. 2006/07 and 2007/08. Data revealed the presence of highly significant differences among crosses, among populations within crosses as well as among populations within each cross for all studied characters. The calculated values of A, B and C scaling tests for all studied characters in the two crosses were significant except for plant height in the second cross. The additive effect was more important and greater than the dominance effect for 100- kernels weight and grain yield per plant for the two crosses, while the dominance effect was more important and greater than the additive effect for days to headingand maturity for the two crosses and also for number of Bpikes per plant in the first cross.

Summary in Arabic.

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