A synthetic (reputed) kinin, SD 8339, at 1000 parts per million in alcohol solution, applied to flower clusters of a male grapevine about 3 weeks before anthesis, completely converted the flower sex from male to hermaphrodite. Indolebutyric acid, 2,3,5-triiodobenzoic acid, 2-chloroethyltrimethylammonium chloride beta-naphthoxyacetic acid, beta-indoleacetic acid, alpha-naphthaleneacetic acid, and gibberellin A(3) failed to modify the sex.
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Negi et al. (1966) studied this question.
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