In tissue culture,roots can be induced by

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(A) In tissue culture,shoot regeneration is promoted by cytokinin,while root regeneration is promoted by auxins such as $NAA$ (Naphthalene Acetic Acid

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Lower concentration of cytokinin and higher concentration of auxins

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(A) In tissue culture,shoot regeneration is promoted by cytokinin,while root regeneration is promoted by auxins such as $NAA$ (Naphthalene Acetic Acid).An excess of auxin relative to cytokinin promotes root development.Conversely,a higher concentration of cytokinin relative to auxin promotes shoot regeneration.Therefore,to induce roots,a higher concentration of auxins and a lower concentration of cytokinin are required.

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