Which of the following is used in root formation on stem cuttings?

Kinetin

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{G A}_{3}

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ABA

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IBA/IAA

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Solution

The correct option is D IBA/IAA
Auxin is a plant hormone that is involved in various growth and developmental processes of plant. It stimulates the formation of new root on stem cuttings. Natural auxin, IAA (indoleacetic acid) and synthetic auxins, IBA and NAA are commonly used for root initiation on stem cuttings.
Thus, the correct answer is option D.

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