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The mode of inheritance of wheat leaf rust resistance gene Lr45 was studied at seedling stage under greenhouse conditions against leaf rust race 77-5 in two F 2 populations derived from the crosses between Thatcher (Tc)+Lr45 and two susceptible cultivars Agra Local and NI5439. The genetic analysis in F 2:3 progeny validated the F 2 results which...
A study on mode of inheritance and mapping of fertility restorer (Rf) gene(s) using simple sequence repeat (SSR) markers was conducted in a cross of male sterile line 2041A having Triticum timopheevi cytoplasm and a restorer line PWR4099 of common wheat (Triticum aestivum L.). The F1 hybrid was completely fertile indicating that fertility restoration is a dominant trait. Based on the pollen fertility...
One hundred and four released varieties of bread wheat (Triticum aestivum L ssp. aestivum) in India were crossed to two T. aestivum L ssp. aestivum testers, namely, C306 (Ne1Ne1ne2ne2) and HD2329 (ne1ne1Ne2Ne2) to determine the frequency and distribution of genes for hybrid necrosis present in them. Sixty-seven varieties (65.4 %) showed the presence of Ne2 gene and only...
Investigations were carried out to determine the nature and number of genes governing apical lethality (apical death) in a number of intervarietal crosses of wheat. Genetic analysis of data in segregating generations of the cross WR95/HW2041 and its reciprocal cross revealed that WR95 carries a recessive gene that leads to the death of certain individuals when combined with another recessive gene...
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