Author(s)

Navjot Kaur Dhillon, Harcharan Singh Dhaliwal

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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.

Lr9, Isogenic Lines, Non-Allelic Genes

Dhillon, N. and Dhaliwal, H. (2011) Allelic Relationship between Lr9 and the Leaf Rust Resistance Gene in Kharchia Local Mutant of Wheat. American Journal of Plant Sciences, 2, 688-691. doi: 10.4236/ajps.2011.25083.