Facultative apomixis in an endangered dioecious species, Woonyoungia septentrionalis (Magnoliaceae)

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	Facultative apomixis in an endangered dioecious species, Woonyoungia septentrionalis (Magnoliaceae)
	Zeng, QW ; Zhang, DX ; Gao, ZZ ; Xing, FW
	2003-11-01
发表期刊	ACTA BOTANICA SINICA
ISSN	0577-7496
卷号	45 期号:11 页码:1270-1273
摘要	The breeding system of an endangered dioecious species, Woonyoungia septentrionalis (Dandy) Law, was studied in two natural populations, the Mulun population and the Dahuangni population, in Guangxi Province, China from June 2001 to early September 2002. The female flowers from previously bagged buds were treated respectively with paper bags, net bags and hand pollination by comparing with natural pollination. The results showed that female flowers treated with paper bags, net bags, hand pollination, and natural pollination all set fruits and seeds, but there was great difference in their fruit set, seed set, pre-emergent reproductive success (PERS) and seed germination rate for two populations. In both populations, PERS of hand pollination and natural pollination were higher than those of paper bagged and net bagged treatments. Among them, PERS of hand pollination was the highest, and PERS of net bagged treatment was the lowest. Both sexual reproduction and apomixis occurred simultaneously in W septentrionalis and seeds from both sexual and apomixis could germinate into seedlings. Therefore, the breeding system of W septentrionalis belonged to facultative apomixis. The apomixis in Magnoliaceae was reported for the first time.
关键词	Woonyoungia Septentrionalis Breeding Systems Facultative Apomixis Apospory
学科领域	Biochemistry & Molecular Biology ; Plant Sciences
收录类别	SCI
语种	英语
WOS记录号	WOS:000186602800003
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/13517
专题	离退休
作者单位	1.Chinese Acad Sci, S China Bot Garden, S China Inst Bot, Guangzhou 510520, Peoples R China 2.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China 3.Chinese Acad Sci, Dept Systemat & Evolutionary Bot, S China Inst Bot, Guangzhou 510520, Peoples R China
推荐引用方式 GB/T 7714	Zeng, QW,Zhang, DX,Gao, ZZ,et al. Facultative apomixis in an endangered dioecious species, Woonyoungia septentrionalis (Magnoliaceae)[J]. ACTA BOTANICA SINICA,2003,45(11):1270-1273.
APA	Zeng, QW,Zhang, DX,Gao, ZZ,&Xing, FW.(2003).Facultative apomixis in an endangered dioecious species, Woonyoungia septentrionalis (Magnoliaceae).ACTA BOTANICA SINICA,45(11),1270-1273.
MLA	Zeng, QW,et al."Facultative apomixis in an endangered dioecious species, Woonyoungia septentrionalis (Magnoliaceae)".ACTA BOTANICA SINICA 45.11(2003):1270-1273.

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