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矮牡丹传粉生物学的初步研究
引用本文:罗毅波,裴颜龙,潘开玉,洪德元.矮牡丹传粉生物学的初步研究[J].植物分类学报,1998,36(2):134-144.
作者姓名:罗毅波  裴颜龙  潘开玉  洪德元
作者单位:中国科学院植物研究所系统与进化植物学开放研究实验室,中国农业科学院作物研究所
摘    要:对山西省南部矮牡丹3个居群连续两年的野外观察和实验研究表明,共有5种蜂和4种甲虫参 与矮牡丹的传粉。电镜观察和人工控制昆虫传粉试验证明,蜂类,特别是地蜂类是矮牡丹的主要传粉 者,而甲虫类只是一种不稳定的传粉者。矮牡丹花无蜜液,但可散发气味,主要以花粉吸引昆虫。矮牡 丹不存在无融合生殖,也没有自动自花结实现象,但同株异花能产生少量种子,具微弱的自交性。在花 少的居群中自然结实率与人工异交结实率近相等。矮牡丹的结实率低,平均只有近1/4的胚珠发育成种子。

关 键 词:芍药科  矮牡丹  开花期  传粉生物学  繁殖系统  蜂类  甲虫类

A STUDY ON POLLINATION BIOLOGY OF PAEONIA SUFFRUTICOSA SUBSP. SPONTANEA(PAEONIACEAE)
LUO Yi Bo,PEI Yan Long,PAN Kai Yu,HONG De Yuan.A STUDY ON POLLINATION BIOLOGY OF PAEONIA SUFFRUTICOSA SUBSP. SPONTANEA(PAEONIACEAE)[J].Acta Phytotaxonomica Sinica,1998,36(2):134-144.
Authors:LUO Yi Bo  PEI Yan Long  PAN Kai Yu  HONG De Yuan
Affiliation:LUO Yi Bo 2 PEI Yan Long 1 PAN Kai Yu 1 HONG De Yuan 1
Abstract:Field observation on pollination in three populations of Paeonia suffruticosa subsp. spontanea in southern Shanxi Province showed that five species of bees in two families and four species of beetles were engaged in pollination. Examination on bodies of these insects under SEM, and seed set produced by controlled insect pollination indicated that the bees, especially the species in the genus Andrena were main pollinators and the beetles except those of small size were only fluctuating vectors.Flowers of this taxon are scented and nonectariferous.Flowers attracted bees and beetles mainly by pollen. A study on seed set in the three populations revealed considerable variation within and among populations. The plants were no apomict and autogamy,but geitonogamy sometimes could produce mature seeds (x=2.86 seeds per carpel). In the population with less flowers (less than 40 flowers), natural seed set (x=3.88) was close to the seed set produced by hand cross pollination (x=3.21), but in the population with more flowers(near 100 flowers) natural seed set (x= 2.48 ) was lower than that by hand cross pollination (x=3.21). The seed set was low for both natural and artificial cross pollination with only about one forth of ovules developing into seeds.
Keywords:Paeoniaceae  Paeonia suffruticosa subsp  spontanea  Flowering  Pollination biology  Breeding system  Bees  Beetles  
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