Navigate

Black stem rust of wheat is caused by

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

NEET2010M
admin:

Related Questions

  1. The length of different internodes in a culm of sugarcane is variable because of
  2. Variation in gene frequencies within populations can occur by chance rather
  3. Golgi complex is present in
  4. In the human female, menstruation can be deferred by a administration of
  5. After 14 years of age among men, which gland disappears?