Reproductive biology of the biofuel plant Jatropha curcas in its center of origin

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Abstract

In this work, we studied the main characteristics of flowering, reproductive system and diversity of pollinators for the biofuel plant Jatropha curcas (L.) in a site of tropical southeastern Mexico, within its center of origin. The plants were monoecious with inflorescences of unisexual flowers. The male flowers produced from 3062-5016 pollen grains (266-647 per anther). The plants produced fruits with both geitonogamy and xenogamy, although insect pollination significantly increased the number and quality of fruits. A high diversity of flower visiting insects (36 species) was found, of which nine were classified as efficient pollinators. The native stingless bees Scaptotrigona mexicana (Guérin-Meneville) and Trigona (Tetragonisca) angustula (Latreille) were the most frequent visitors and their presence coincided with the hours when the stigma was receptive. It is noteworthy that the female flowers open before the male flowers, favoring xenogamy, which may explain the high genetic variability reported in J. curcas for this region of the world.

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Rincón-Rabanales, M., Vargas-López, L. I., Adriano-Anaya, L., Vázquez-Ovando, A., Salvador-Figueroa, M., & Ovando-Medina, I. (2016). Reproductive biology of the biofuel plant Jatropha curcas in its center of origin. PeerJ, 2016(3). https://doi.org/10.7717/peerj.1819

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