Peroxidase Isozyme Pattern in Pearl Millet Lines Resistant and Susceptible to Downy Mildew |
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| Authors: | S. S. Chahal R. Kumar J. S. Sidhu J. L. Minocha |
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| Affiliation: | Dr. S. S. Chahal;, Department of Plant Pathology, Punjab Agricultural University, Ludhiana-141004 (India) Drs. R. Kumar;, J. S. Sidhu and J. L. Minocha, Department of Genetics, Punjab Agricultural University, Ludhiana-141004 (India) |
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| Abstract: | Peroxidase isozyme patterns of five downy mildew (DM) resistant inbred lines (PIB-57-1, PIB-1248, PIB-1356, PIB-1364 and PIB-1440), five susceptible lines (PIB-1335-1-1, PIB-1314-2-2, PIB-2231-1, 7042 and PIB-1530-1-1) and DM free plants from the susceptible lines of pearl millet were studied. The results suggested a possible involvement of an isoperoxidase (C9) in imparting the resistance. The involvement of two other isozymes (C5 and C6) was also indicated in the1 resistance mechanism. The specific differentiation m particular isozyme pattern can be a useful criterion for characterization of resistance to downy mildew. |
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| Keywords: | Pennisetum typhoides Downy mildew Sclerospora graminicola peroxidase isozymes |
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