Question

Whichone of the plant growth regulators would you use if you are asked to:

(a)Induce rooting in a twig

(b)Quickly ripen a fruit

(c)Delay leaf senescence

(d)Induce growth in axillary buds

(e)‘Bolt’ a rosette plant

(f)Induce immediate stomatal closure in leaves.

Answer 1

(a) Inducerooting in a twig –Auxins

(b) Quicklyripen a fruit –Ethylene

(c) Delayleaf senescence –Cytokinins

(d) Inducegrowth in axillary buds –Cytokinins

(e) ‘Bolt’a rosette plant –Gibberellic acid

(f) Induceimmediate stomatal closure in leaves –Abscisic acid