A) Peronospora parasitica
B) Puccinia graminis
C) Pythium debaryanum
D) Albugo Candida
Correct Answer: D
Solution :
White rust of crucifers is caused by a fungus Albugo Candida which is mycelial and eucarpic. The mycelium is inter cellular, branched, aseptate and multinucleate (coenocytic). Stem rust of wheat is caused by Puccinia graminis tritici. Peronospora parasitica attacks turnip, radish, cabbage, cauliflower and all Brassica species Pythium debaryanum causes the wide spread damping off disease of tobacco, tomato, mustard, chillies and cress seedlings.
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