A simple screening technique for early detection of resistance to castor wilt
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Authors
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M.A. RAOOF and T.G. NAGESHWAR RAO
Directorate of Oilseeds Research, Hyderabad 500 030
Keywords:
Castor, wilt, screeningAbstract
Castor wilt, caused by Fusarium oxysporum f.sp. ricini, is a serious soil- and seedborne disease of castor [Ricinus communis] in Rajasthan, India. An attempt was made to improve current screening techniques for the pathogen by evaluating different techniques of inoculation. Dipping roots in a solution of 125 000 spores/ml produced wilt on plants within 10 days. Germplasm lines were tested using this technique during 1991-95. Of the 160 lines tested, 42 were resistant to wilt.
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