Sporogenesis and gametogenesis in Sladenia and their systematic implication

CORC > 昆明植物研究所 > 中国科学院昆明植物研究所 > 中国科学院东亚植物多样性与生物地理学重点实验室

	Sporogenesis and gametogenesis in Sladenia and their systematic implication
	Li, L; Liang, HX; Peng, H; Lei, LG
刊名	BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
	2003-11-01
卷号	143 期号:3 页码:305-314
关键词	Actinidiaceae Anther Wall Development Dilleniaceae Embryology Ericales S.l. Ovule Development Ternstroemiaceae Theaceae S.s.
ISSN号	0024-4074
文献子类	Article
英文摘要	Sporogenesis and gametogenesis in the monotypic genus Sladenia is reported for the first time. The anther wall is of the monocotyledonous type of formation and consists of four-layers, namely a glandular tapetum, one middle layer, an endothecium, and an epidermis. Fibrous thickenings are developed in the epidermis at or near the stage of anther maturity rather than in the endothecium. Successive cytokinesis in microsporogenesis results in tetrahedral or rarely isobilateral tetrads of microspores. Pollen grains are two-celled when shed. The ovule is bitegmic, tenuinucellate, and anatropous. The nucellus degenerates during meiosis of the megaspore mother cell. The micropyle is formed by only the inner integument. Development of the female gametophyte conforms to the Adoxa type. Sladenia has been treated either as a member of Actinidiaceae, Dilleniaceae or Theaceae s.l., or as belonging to an independent family, Sladeniaceae. Recent molecular studies have suggested that it belongs to Ternstroemiaceae within the Ericales s.l. Several noteworthy embryological characters are distinct from those of the other putatively related families and support the recognition of a separate family, Sladeniaceae. Additional embryological evidence confirms this conclusion. (C) 2003 The Linnean Society of London, Botanical Journal of the Linnean Society, 2003.
学科主题	Plant Sciences
WOS关键词	PHYLOGENETIC-RELATIONSHIPS ; ANGIOSPERM PHYLOGENY ; OVULE DEVELOPMENT ; EMBRYOLOGY ; CLASSIFICATION ; THEACEAE ; ANTHER ; CAMELLIA
WOS研究方向	Plant Sciences
语种	英语
WOS记录号	WOS:000186727400008
公开日期	2011-12-20
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn:8080/handle/151853/3134]
专题	昆明植物研究所_中国科学院东亚植物多样性与生物地理学重点实验室
作者单位	Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Li, L,Liang, HX,Peng, H,et al. Sporogenesis and gametogenesis in Sladenia and their systematic implication[J]. BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2003,143(3):305-314.
APA	Li, L,Liang, HX,Peng, H,&Lei, LG.(2003).Sporogenesis and gametogenesis in Sladenia and their systematic implication.BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,143(3),305-314.
MLA	Li, L,et al."Sporogenesis and gametogenesis in Sladenia and their systematic implication".BOTANICAL JOURNAL OF THE LINNEAN SOCIETY 143.3(2003):305-314.