Helia 2009, vol. 32, br. 50, str. 85-90
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Pathogenic and morphological variability of Plasmopara halstedii, the causal agent of downy mildew in sunflower
(naslov ne postoji na srpskom)
Department of Plant Pathology, University of Agricultural Sciences, Karnataka, India
Sažetak(ne postoji na srpskom) Isolates of P. halstedii collected from different parts of Karnataka, Maharashtra and Andhra Pradesh belong to a single race, i.e., race 100. Based on virulence pattern, they can be grouped into five different groups, A, B, C, D and E. Bangalore isolate was most virulent and Bidar isolate was least virulent. Morphological variations existed among the isolates with regard to the size of sporangiophores and sporangia. Sporangiophores were longer Dharwad isolate and sporangia were larger in Mysore and Latur isolates.
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