Economic Botany

, 37:396

Possible role of ultraviolet radiation in evolution ofCannabis chemotypes

  • David W. Pate


The damaging effects of UV-B radiation have apparently affected the amounts of ultraviolet-absorbing secondary compounds in some plants. A similar role for Δ9 tetrahydrocannabinol may explain the high levels of this compound inCannabis from areas of intense ambient UV-B. Further research is needed to determine whether UV-B radiation serves only as a selection pressure or if UV-B-induced stress may also directly stimulate production.

Copyright information

© New York Botanical Garden, Bronx, NY 10458 1983

Authors and Affiliations

  • David W. Pate
    • 1
  1. 1.Dept. of PharmacognosyUniversity of Mississippi, University
  2. 2.Department of BiologyUniversity of Missouri-St. LouisUSA

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