Induction of plant tubers and flower buds under noninducing photoperiod conditions by a natural product, theobroxide
2000
Yoshihara, T. | Ohmori, F. | Nakamori, K. | Amanuma, M. | Tsutsumi, T. | Ichihara, A. | Matsuura, H.
Theobroxide is an epoxy cyclohexene compound isolated from the culture filtrate of the fungus Lasiodiplodia theobromae that induces potato microtuber formation in vitro (Nakamori and others 1994). When sprayed on potato (Solanum tuberosum L.) and morning glory (Pharbitis nil) plants, which require short days to induce tubers and flower buds, respectively, potato plants kept in noninducing conditions (long days) produced tubers. Theobroxide spray treatment also produced flower buds in morning glory plants kept under noninducing conditions (long days). Furthermore, under inducing conditions (short days), the number of flowers of seedlings sprayed with theobroxide was about 1.5 times that of controls.
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