Abstract
Pyrenophora tritici-repentis (Ptr) induces tan necrosis and/or chlorosis, including extensive chlorosis in differential wheat cultivars. Reciprocal crosses were made in all combinations between the hexaploid wheats Glenlea (necrotic only), 6B365 (chlorotic only), and Salamouni (non-necrotic, nonchlorotic). F 1 , F 2 , and F 3 progenies were sequentially tested for extensive chlorosis by using isolate D308 (nec - chl + ) and for tan necrosis with isolate 86-124 (nec + chl - ) and/or the Ptr necrosis toxin (...)
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