Correct option is D
The correct answer is: (D) Linseed rust
Explanation:
Linseed rust (Melampsora lini) is an autoecious rust, meaning it completes its entire life cycle on a single host, in this case, linseed.
Unlike heteroecious rusts, which require an alternate host to complete their life cycle, autoecious rusts like linseed rust are capable of reproducing solely on their host plant.
Information Booster:
Autoecious rust fungi complete their entire reproductive cycle on a single host, unlike heteroecious rusts, which need a secondary host plant.
Linseed rust is a significant disease in linseed (also known as flax), causing yellowing and premature defoliation of leaves, which can lead to yield loss.
Knowledge Booster :
Stem rust of wheat – Caused by Puccinia graminis, this is a heteroecious rust, requiring an alternate host such as barberry to complete its life cycle.
Bajra rust – Caused by Puccinia sorghi, this is a heteroecious rust, which requires an alternate host (like barberry) for its lifecycle.
Apple rust – Caused by Gymnosporangium, a heteroecious rust that requires an alternate host, juniper, for completing its lifecycle.
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