Title: Pathogenic Variability in Alternaria triticina Causing Leaf Blight of Wheat
Abstract: Five monoconidial isolates of Alternaria triticina were isolated from infected leaves collected from Faizabad (Uttar Pradesh), Hisar (Haryana), Kalyani (West Bengal), Dharwad (Karnataka), Durgapura (Rajasthan) and designated as At1, At2, At3, At4 and A5 respectively. All the isolates showed differences in growth and colony characters on PDA at 25 ± 1°C. The considerable variation was observed among ten wheat cultivars to these five isolates. Disease reaction varied from 4 to 9 with isolate At1, 3 to 8 with At5 and At4, 3 to 7 with At3 and 2 to 8 with At2. Four wheat cultivars viz., ISWYT-1, HD 2206/HORK ‘S’, PF 70354-YACO ‘S’ and BJY ‘S’ x TOBCHA were found moderately resistant to isolate At1. The cultivars, Sonalika, HD 2329 and Bansi were highly susceptible, while VL 651, HD 2285 and Agra local were moderately susceptible in reaction to isolate At. On the basis of overall average disease rating on all the ten cultivars, the isolate Atwas found most virulent followed by At5, At4, At3 and At2.
Publication Year: 2003
Publication Date: 2003-01-01
Language: en
Type: article
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Cited By Count: 3
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