Evidence of sex change in Ilex integra

Evidence of sex change in Ilex integra
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冬青性别变化的证据

DOI:
10.1139/b11-085
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发表时间:
2012
期刊:
影响因子:
1.1
通讯作者:
K
K
中科院分区:
生物学4区
文献类型:
--
作者:
Takagi;E.;Togashi;K

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一些植物的性别变化已得到证实。雌雄异株木本植物的性别变化包括雌雄同株状态,这意味着变化的时间在枝或芽中是同步的,但在植物之间不同步,例如在部分雌雄异株的木本植物中。为了确定这种现象在木本植物中是否常见,我们研究了鸟类分散的雌雄异株木本植物 Ilex integraThunb 的两个种群的性别表达。 (Aquifoliaceae),东亚的顶峰森林物种之一,已有 3 年多的历史。没有观察到雌雄同株的树木或雌雄同体的花。观察到性别变化的频率较低,即女性变男性和男性变女性。本研究表明I.integra可能是一种完全雌雄异体的木本植物物种,并且性别变化发生在个体水平上,表明单株树的性别变化时间是同步的。
Sex change has been recognised in some plants. The sex change in dioecious woody plants includes a monoecious state, which means that the timing of the change is synchronous in branches or shoots but not synchronous among plants, such as in partial dioecious woody plants. To determine whether such a phenomenon is common in woody plants, we investigated the sex expression in two populations of the bird-dispersed, dioecious woody plantIlex integraThunb. (Aquifoliaceae), one of the climax forest species in East Asia, over 3 years. No monoecious trees or hermaphrodite flowers were observed. Sex changes were observed at low frequencies, i.e., both female to male and male to female. This study suggests thatI.integramay be a complete dioecious woody plant species and that the sex change occurs at the individual level, indicating that the timing of sex change is synchronous in an individual tree.
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