In Tobacco callus; which one shall induce shoot differentiation in combination of auxin and cytokinin
A. Higher concentration of cytokinin and lower concentration of auxin
B. Lower concentration of cytokinin and higher concentration of auxin
C. Only cytokinin and no auxin
D. Only auxin and no cytokinin
Answer: Option A
Solution(By Examveda Team)
In Tobacco callus; a higher concentration of cytokinin and a lower concentration of auxin shall induce shoot differentiation in a combination of auxin and cytokinin.For callus initiation, a high concentration of auxins and a low concentration of cytokinins were used, whereas a high concentration of cytokinins and a low concentration of auxins were used for shoot-bud differentiation.
An intermediate ratio of auxin and cytokinin promotes callus induction, while a high ratio of auxin-to-cytokinin or cytokinin-to-auxin induces root and shoot regeneration, respectively.
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