American Journal of Plant Sciences

Volume 2, Issue 5 (November 2011)

ISSN Print: 2158-2742   ISSN Online: 2158-2750

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Allelic Relationship between Lr9 and the Leaf Rust Resistance Gene in Kharchia Local Mutant of Wheat

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DOI: 10.4236/ajps.2011.25083    3,433 Downloads   6,162 Views   Citations

ABSTRACT

To confirm allelic relationship between Lr9 and the leaf rust resistance gene in KLM4-3B, genetics of resistance was studied using crosses (WL711 + Lr9) × WL711 and (WL711 + LrKLM4-3B) × WL711. The F2 populations in cross (WL711 + Lr9) × WL711 and (WL711 + LrKLM4-3B) × WL711 segregated in ratio of 3:1 for disease reaction at seedling stage against pathotype 77-5 of leaf rust. This suggests that rust resistance in these stocks are under the control of single dominant genes. Further, to study allelic relationship betweenLr 9 and LrKLM4-3B, F2 population of the cross (WL711 + LrKLM4-3B) × (WL711 + Lr9) was studied. A segregation ratio of 15:1 implies that the two genes Lr9 and LrKLM4-3B are non-allelic genes.

Cite this paper

N. Dhillon and H. Dhaliwal, "Allelic Relationship between Lr9 and the Leaf Rust Resistance Gene in Kharchia Local Mutant of Wheat," American Journal of Plant Sciences, Vol. 2 No. 5, 2011, pp. 688-691. doi: 10.4236/ajps.2011.25083.

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