Which of the following theories is most accepted theory that explains the abscission

Options :
  1. Tunica corpus theory
  2. Quiescent centre theory
  3. Auxin gradient theory
  4. Chemi osmotic theory
Answer and Explanation :-

Answer: Option 3


According to Addicott and Lynch, 1951 who proposed the widely accepted auxin gradient theory, a decline in the concentration of auxin in the organ induces the formation of abscission layer. No abscission occurs if the concentration of auxin is more on the distal end.

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