HW 3631 (IC0598414; INGR13052), a Wheat (Triticum aestivum) Germplasm with Resistance to Stem and Leaf Rust, it Carries Gene for Leaf Rust Resistance Lr1 9 and Stem Rust Resistance Sr36

摘要

The stem and leaf rusts of wheat respectively caused by Puccinia graminis Pers. f.sp. tritici Eriks. & E. Henn. (Pgt) and P. triticina Eriks. (Pt) are of countrywide importance in India. Both the diseases survive and spread from the source of their primary inocula available all-the-year-around in Nilgiri / Palni hills of South Hill Zone and Himalayas of North Hill Zone (Nagarajan and Joshi, 1985). From epidemiological point of view, the Pgt urediospore dispersal in India is unidirectional from the southern hills only (Nagarajan et al., 2006). On the other hand, primary inoculum of Pt originates both from Nilgiri/Palni hills and Nepal Himalayas, establish initial disease foci respectively in Peninsular/ Central India and adjoining Himalayan tarai areas and spread further to other parts of the country (Nagarajan and Joshi, 1985).