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Black (stem) rust of wheat is caused by
Options
(a) Alternaria solani
(b) Ustilago nuda
(c) Puccinia graminis
(d) Xanthomonas oryzae
Correct Answer:
Puccinia graminis
Explanation:
Black stem rust is caused by Puccinia graminis. The genus Puccinia includes 700 species, which cause rust disease of many economic plants such as wheat, barley, oats, etc. It is called a rust because of the reddish brown color of the spores that are found chiefly upon the surface of the host leaves and stem. P. graminis is heteroecious i.e., requiring two hosts, wheat and barberry for the completion of normal life cycle. According to the nature of the spores, the life cycle of the P.graminis is divided into
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Topics: Diversity In Living World
(339)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Pacinian corpuscles are abundantly found in
- Germplasm conservation at liquid N₂ temperature is
- The principal pathway of water translocation in angiosperms is
- If the dental formula of Rabbit is 20331023What does it show
- Reduction of NADP takes place in
Topics: Diversity In Living World (339)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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