Black rust of wheat is caused by ___________.

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

Puccinia

Albugo

Both 1 & 2

None of the above

answer is A.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

Puccinia graminis is a fungus that affects plant stems. It is an obligate parasite of wheat. It causes dark reddish-brown pustules on both sides of stems, leaves, and spikes. Albugo causes white rust.
The stem rust is also known as the lack of rust. The stem rust is caused through the fungus called Puccinia graminis f. sp. tritici. It infects wheat and other cereals across all U.S. growing regions. The black rust can be visually identified as a thin, black film that is due to the oxidation in a low oxygen environment. The black rust has an appearance of almost a black stain. Most likely the areas exhibiting the black rust had something covering them, that prevented the oxygen from reaching the surface.
Hence, option 1 is the correct answer.

Watch 3-min video & get full concept clarity