火把花的繁殖生物学研究
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1.中国科学院广西植物研究所;2.中国科学院昆明植物研究所

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中国科学院“西部之光”人才培养计划 [2020]59;广西自然科学基金2023GXNSFDA026066


Reproductive Biology of Colquhounia coccinea
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    摘要:

    火把花(Colquhounia coccinea?)表现出典型的鸟媒综合征,因此具有作为引鸟景观植物的开发潜力。以自然、人工生境的火把花居群为研究对象,通过观察和试验对其开花物候、花部综合特征、访花动物及其行为、繁育系统、种子萌发特性进行研究,以明确火把花的繁殖特性及对不同访花动物的吸引潜力。结果显示,火把花的整体花期持续约3个月,单花花期为9.6±0.6 d;花蜜较丰富且稀薄,具有较短的花冠管和己糖为主的花蜜糖组成;访花动物主要是中华蜜蜂和多种食蜜鸟类,尤其是短喙的泛化鸟类,且在非自然生境中仍然能吸引鸟类访花;完全自交亲和但需要传粉者才能完成授粉,不存在花粉限制;不同授粉处理种子的发芽能力无显著差异;中华蜜蜂能有效传粉,鸟类的传粉作用需进一步验证。综上所述,火把花可供观赏的时间很长,具有明显的吸引鸟类访花的能力,容易通过有性繁殖途径快速获得大量幼苗。

    Abstract:

    Colquhounia coccinea shows a floral syndrome typical of bird pollination, and therefore has the potential to be developed as a bird-attracting landscape plant. Taking the C.?coccinea population in natural and artificial habitat as the research object, the flowering phenology, flower traits, flower visitor and flower visiting behavior, breeding system, and seed germination traits are studied through observation and experiment, so as to clarify the reproductive traits of the C.?coccinea and the attraction potential of different flower visitors. The results showed that the flowering season of C.?coccinea lasted for about three months, the single flowering period was 9.6±0.6 d; nectar was relatively abundant and dilute, with short corolla tubes and hexose-dominated nectar sugar composition; flower visitors were mainly Apis cerana and a variety of nectarivorous birds, especially short-billd generalized birds, and C.?coccinea still attracted bird visitors in artificial habitats; it is completely self-compatibile, but pollinators were necessary for pollination, and pollen limitation did not exist; there was no significant difference in seed germination ability among the pollination treatments; Apis cerana can pollinate it effectively, and the pollination effectiveness of birds needs to be further verified. In summary, C.?coccinea shows a long display season and, has an apparent ability to attract birds to visit the flowers. We can produce large numbers of seedlings via sexual reproduction.

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黄妹英,段云博,梁琼月,等.火把花的繁殖生物学研究[J].西北植物学报,2024,44(1):127-133

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  • 收稿日期:2023-08-06
  • 最后修改日期:2023-10-20
  • 录用日期:2023-10-30
  • 在线发布日期: 2023-12-04
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