An excised leaf does not turn yellow if it is | vedclass

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(B) The phenomenon where cytokinins delay the senescence (aging) of leaves is known as the $Richmond-Lang$ effect. When an excised leaf is induced to

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Cytokinins

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(B) The phenomenon where cytokinins delay the senescence (aging) of leaves is known as the $Richmond-Lang$ effect. When an excised leaf is induced to form roots,the roots synthesize cytokinins. These cytokinins are transported to the leaf,where they prevent the breakdown of chlorophyll and delay the yellowing process (senescence). Therefore,cytokinins are responsible for retarding leaf aging.

An excised leaf does not turn yellow if it is induced to root. This is attributed to the synthesis of which hormone in the root,or which hormone retards leaf aging?

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