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题名: Floral development in Nymphaea tetragona (Nymphaeaceae)
作者: Hu, Guang-Wan1, 2; Lei, Li-Gong1; Liu, Ke-Ming3; Long, Chun-Lin1
刊名: BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
关键词: ANITA ; basal angiosperms ; floral organ initiation ; Nymphaea
英文摘要: We describe in detail the floral ontogeny of Nymphaea tetragona from a wild population to provide evidence regarding the phylogenetic position of Nymphaea and to reveal evolutionary trends of flowers in Nymphaeaceae by comparison with that of the other genera. Four sepals are initiated unidirectionally. The basal petals are initiated unidirectionally and alternate with the sepals. The dome-shaped floral apex continues to expand and produces more petal and stamen primordia. The remaining petals and all stamens are initiated in spirals or whorls. Later, the periphery of the floral apex grows more quickly than the centre and results in a depression in the centre of the apex after all stamens have been initiated. Carpels are simultaneously initiated in a cycle at the periphery of the depression. They are ascidiate. After all organs have been initiated, the centre of the depression on the floral apex grows and develops into a globular structure. The connected inferior ovary, stigma caps and the globular floral apex together form an extragynoecial compitum. Within Nymphaeaceae, the floral ontogeny of Nymphaea is most similar to that of Euryale and Victoria. It differs more from Ondinea and Barclaya, and differs most from Nuphar. (C) 2009 The Linnean Society of London, Botanical Journal of the Linnean Society, 2009, 159, 211-221.
出版日期: 2009-02-01
卷号: 159, 期号:2, 页码:211-221
DOI标识: 10.1111/j.1095-8339.2008.00905.x
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 0024-4074
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/2475
Appears in Collections:资源植物与生物技术所级重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Hunan Normal Univ, Dept Bot, Changsha 410081, Hunan, Peoples R China

Recommended Citation:
Hu, GW; Lei, LG; Liu, KM; Long, CL.Floral development in Nymphaea tetragona (Nymphaeaceae),BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2009,159(2):211-221
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