HORTICULTURE

HORTICULTURE SCIENCE

FLORICULTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Auxin is produced in the shoot tips by a plant, The purpose of auxin in the plant is to
A
inhibit lateral branch development
B
start the process of the flower development
C
promote lateral branch development
D
encourge seed development
Explanation: 

Detailed explanation-1: -Apically derived auxin has long been known to inhibit lateral bud growth, but since it appears not to enter the bud, it has been proposed that its inhibitory effect is mediated by a second messenger. Candidates include the plant hormones ethylene, cytokinin and abscisic acid.

Detailed explanation-2: -Apical Dominance The presence of auxins in the lateral areas of the plant (in between the root and shoot tip) prevent lateral growth. If you cut off the shoot tip of a plant, the lack of ‘diffusable’ auxins means that they cannot inhibit growth in these lateral areas. This is known as apical dominance.

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