Yellowvein mosaic of Abelmoschus esculanta (okra) is spreads by
A. Bemisia tabaci
B. Aphids
C. Leaf hopper
D. Nematodes
Answer: Option A
Solution(By Examveda Team)
The yellow vein mosaic of Abelmoschus esculanta (okra) is spread by Bemisia tabaci.Yellow vein mosaic disease (YVMD) is a major biotic constraint on okra (Abelmoschus esculentus) cultivation in Sri Lanka. Diseased plants show characteristic symptoms of mosaic and vein yellowing on leaves and small and yellowish-green fruits.
The virus is transmitted by whitefly (Bemisia tabaci Genn.), which is the most severe pest of many crops in the world. The virus is responsible for 80–90% of yield losses and it affects all the developmental stages of okra plants.
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B. Cyanobacteria
C. Purple nonsulphur bacteria
D. Green sulphur bacteria
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