Plant Growth and DevelopmentMedium
Question
Out or excised leaves remain green for long if induced to root or dipped in
Options
A.gibberellins
B.cytokinins
C.auxins
D.ethylene
Solution
According to Richmond -Lang effect, cffect, cytokinin delays senescence of leaves. As cytokinin treated detached leaves remain green after a period of twenty days whereas controlled leaves were completely yellow and drying at tips and margins. It was concluded that cytokinin was able to postpone for a number of days the disappearance of chlorophyll and degradation of proteins that normally occur with the ageing process of leaves.
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