Abstract

AbstractPeroxidase 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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