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Floral development and the formation of functionally unisexual flowers in Xanthoceras sorbifolium (Sapindaceae), a morphologically andromonoecious tree endemic to northern China
Zhou, Qingyuan; Cai, Qing; Zheng, Yuanrun; Wu, Zhiyan1; Mao, Jianfeng2
2019
发表期刊TREES-STRUCTURE AND FUNCTION
ISSN0931-1890
卷号33期号:6页码:1571-1582
摘要Key message Xanthoceras sorbifolium is apparently andromonoecious but exhibits a cryptically monoecious breeding system. Sexual differentiation in male and functional female flowers occurs 2 weeks before flowering. Individual trees of Xanthoceras sorbifolium bear male and morphologically bisexual flowers but functionally female flowers, and show labile sex expression. Investigations of the floral development are of significant value for understanding the breeding system and elucidating the systematic relationships. We studied floral development of male and bisexual flowers using scanning electron and light microscopy. The early stages of floral development were essentially the same, and all floral organ primordia were initiated in the two types of flowers of X. sorbifolium. Later, the stamens in bisexual flowers and the gynoecium in male flowers were aborted. We divided floral development into nine stages. Morphological differences between male and bisexual flowers appeared first at stage 8, when the style elongated obviously and the stigma papillae began to expand in the bisexual flowers but not in the male flowers. Ovule development was arrested shortly after formation of megaspore mother cells or during meiosis in the male flowers, whereas anther development was aberrant in the bisexual flowers. Morphologically bisexual flowers of X. sorbifolium do not have male function and are functionally female. Comparison of floral developmental characters did not support the separation of the Chinese monotypic genus Xanthoceras from the family Sapindaceae.
关键词Floral development Andromonoecy Monoecy Systematic relationship Xanthoceras sorbifolium
学科领域Forestry
DOI10.1007/s00468-019-01879-6
收录类别SCI
语种英语
WOS关键词ORGANOGENESIS ; EVOLUTION ; ONTOGENY ; CAESALPINIOIDEAE ; KOELREUTERIA ; PLASTICITY ; EMBRYOLOGY ; CASSIEAE ; FAMILY
WOS研究方向Forestry
WOS记录号WOS:000494830600004
出版者SPRINGER HEIDELBERG
文献子类Article
出版地HEIDELBERG
EISSN1432-2285
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [30972344, 31370611, 31570680] ; Beijing Natural Science FoundationBeijing Natural Science Foundation [6172028]
作者邮箱qyzhou@ibcas.ac.cn
引用统计
被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ibcas.ac.cn/handle/2S10CLM1/19892
专题中科院北方资源植物重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, Key Lab Plant Resources, Beijing, Peoples R China
2.Natl Forestry & Grassland Adm, Shinyleaf Yellowhorn Engn & Technol Res Ctr, Chifeng, Peoples R China
3.Beijing Forestry Univ, Coll Biol Sci & Technol, Beijing, Peoples R China
推荐引用方式
GB/T 7714
Zhou, Qingyuan,Cai, Qing,Zheng, Yuanrun,et al. Floral development and the formation of functionally unisexual flowers in Xanthoceras sorbifolium (Sapindaceae), a morphologically andromonoecious tree endemic to northern China[J]. TREES-STRUCTURE AND FUNCTION,2019,33(6):1571-1582.
APA Zhou, Qingyuan,Cai, Qing,Zheng, Yuanrun,Wu, Zhiyan,&Mao, Jianfeng.(2019).Floral development and the formation of functionally unisexual flowers in Xanthoceras sorbifolium (Sapindaceae), a morphologically andromonoecious tree endemic to northern China.TREES-STRUCTURE AND FUNCTION,33(6),1571-1582.
MLA Zhou, Qingyuan,et al."Floral development and the formation of functionally unisexual flowers in Xanthoceras sorbifolium (Sapindaceae), a morphologically andromonoecious tree endemic to northern China".TREES-STRUCTURE AND FUNCTION 33.6(2019):1571-1582.
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