Effects of Abscissic acid- Write short notes.
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Answer:
Abscissic acid is a stress hormone in plant which is also known as dormin.
Explanation:
effects of Abscissic acid
1 Dormancy ABA play an important role in maintaining seed dormancy.Dormancy means a pause in growth.there are two types of dormancy a coat imposed dormancy b embryo dormancy
2 Stomatal closure ABA help in closing the stomata of laeves of zorophytic plants to prevent the loss of excess water through transpiration.
3 Shoot and root growth ABA help to regulate shoot and root groth according to the water status of the soil.
4 competitor of giberellin ABA blocks the acivity of alpha amylase which is mediated by giberellin thus blocking seed germination.
5 abscission ABA promotes leaf abscission and lef senescence
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