wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

''2,4 - D widely used to kill dicotyledonous weeds , does not affect mature moocotyledonous plants. ''

why does it afffect oly dicotyledonous weeds and not monocotyledonous weed.?

Open in App
Solution

2, 4-D (2, 4-dichlorophenoxyacetic acid) are synthetic auxins. It selectively kills dicot weeds, and does not affects mature monocot weeds. Monocots responds differently to auxinic herbicides.This fact could be explained on the basis of various reasons. Monocots have different vascular anatomy than dicots.

Monocot weeds are not killed by 2, 4-D because of either limited translocation or rapid degradation of exogenous auxin in monocots.


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Plant Growth Regulators
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon