PJB-2010-207
LOCAL STEM RUST VIRULENCE IN PAKISTAN AND FUTURE BREEDING STRATEGY
MIRZA JAVED IQBAL, IFTIKHAR AHMAD, KHALIL AHMAD KHANZADA1, NAVEED AHMAD, ATIQ-UR-REHMAN RATTU, MUHAMMAD FAYYAZ, YASMIN AHMAD, A.A. HAKRO AND ABDUL MUJEEB KAZI2
Abstract
Evolution and spread of stem rust race Ug-99 has created an alarming global situation. Majority of the CIMMYT germplasm protected by gene Sr31 fell susceptible to this catastrophic strain. Like other parts of the world stem rust of wheat was very successfully controlled in Pakistan by the introduction of resistant germplasm during and after green revolution. In 2001 stem rust reappeared and hit many commercial varieties in the province of Sindh. Its sporadic infections were recorded in 2005 summer crop of Kaghan followed by 2005-06
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