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Bulletin of Botanical Research ›› 2023, Vol. 43 ›› Issue (3): 432-438.doi: 10.7525/j.issn.1673-5102.2023.03.013

• Pollination biology • Previous Articles     Next Articles

The Pollination Biology of Begonia Guangxiensis, a Narrowly Distributed Species

Qiongyue LIANG1,2, Changqiu LIU2, Qifeng LU2, Tao DENG2, Bo CAI2()   

  1. 1.Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection(Guangxi Normal University),Ministry of Education,Guangxi Normal University College of Life Sciences,Guilin 541001
    2.Guangxi Institute of Botany,Chinese Academy of Sciences,Guilin 541006
  • Received:2022-11-25 Online:2023-05-20 Published:2023-05-11
  • Contact: Bo CAI E-mail:1142210831@qq.com
  • About author:LIANG Qiongyue(1997—),female,post graduate,mainly engaged in plant pollination biology.
  • Supported by:
    Guangxi Science and Technology Base and Special Talents Program,China(Guike AD20325009);Guangxi Natural Science Foundation Program,China(2020GXNSFBA159052)


To examine the mating system of Begonia guangxiensis and whether the species relies on particular pollinators in its native habitat for pollination and whether it can achieve sexual reproduction in artificial habitats, the experiment of floral longevity observation, floral traits determination, pollination, flower visitor observation and seed germination determination of B. guangxiensis were carried out in this study. The result showed that B. guangxiensis had a long floral longevity, and the corolla sizes varied in different habitats; there was no significant difference in the proportion fruit set and seed germination rate between self-pollination and cross-pollination treatments and natural control between the two habitats; flower visitors included bees(Apis ceranaBombus eximius) and hoverflies(Episyrphus balteatusIschiodon scutellaris), and the visitor composition varied with habitats and years. All the results consistently indicated that the self-compatible B. guangxiensis relied on pollinators for sexual reproduction, but did not rely on a particular type of pollinator, but had a more generalized pollination system, and therefore could reproduce successfully in unnatural habitats.

Key words: Begonia guangxiensis, narrowly distributed species, parthenotype, pollination biology, mating system, floral longevity

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