Effects of germination time on seed morph ratio in a seed-dimorphic species and possible ecological significance

doi:10.1093/aob/mcu210

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	Effects of germination time on seed morph ratio in a seed-dimorphic species and possible ecological significance
	Yang, Fan 4; Baskin, Jerry M.; Baskin, Carol C.; Yang, Xuejun ; Cao, Dechang ; Huang, Zhenying
刊名	ANNALS OF BOTANY
	2015
卷号	115 期号:1 页码:137-145
关键词	Germination timing life history traits maternal environmental effect phenology phenotypic plasticity seed germination seed heteromorphism Suaeda corniculata
ISSN号	0305-7364
DOI	10.1093/aob/mcu210
文献子类	Article
英文摘要	Background and Aims Diaspores of heteromorphic species may germinate at different times due to distinct dormancy-breaking and germination requirements, and this difference can influence life history traits. The primary aim of this study was to determine the effect of germination time of the two seed morphs of Suaeda corniculata subsp. mongolica on life history traits of the offspring. Methods Germinated brown and black seeds were sown on the 20th of each month from April to September in a simulated but near-natural habitat of the species. Phenological and vegetative traits of the maternal plants, and number, size and germination percentage of the offspring were determined. Key Results Germinated seeds sown late in the year produced smaller plants that had a higher proportion of non-dormant brown than dormant black seeds, and these brown seeds were larger than those produced by germinated seeds sown early in the year. The length of the seedling stage for brown seeds was shorter than that for black seeds, and the root/shoot ratio and reproductive allocation of plants from brown seeds were more variable than they were for plants from black seeds. Late-germinating brown seeds produced larger plants than late-germinating black seeds. Conclusions Altering the proportion of the two seed types in response to germination timing can help alleviate the adverse effects of delayed germination. The flexible strategy of a species, such as S. corniculata, that produces different proportions of dimorphic seeds in response to variation in germination timing may favour the maintenance and regeneration of the population in its unpredictable environment.
学科主题	Plant Sciences
电子版国际标准刊号	1095-8290
出版地	OXFORD
WOS关键词	LIFE-HISTORY CHARACTERS ; PHENOTYPIC PLASTICITY ; EVOLUTIONARY ECOLOGY ; NATURAL-SELECTION ; GROWTH ; REPRODUCTION ; SALINITY ; HETEROMORPHISM ; EMERGENCE ; RESPONSES
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000347416100012
资助机构	Key Basic Research and Development Plan of the PR China [2012BAD16B03, 2012BAC01B05] ; National Natural Science Foundation of the PR China [30872074, 31370705]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/25613]
专题	植被与环境变化国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 2.Baskin, Jerry M.; Baskin, Carol C.] Univ Kentucky, Dept Biol, Lexington, KY 40546 USA 3.Baskin, Carol C.] Univ Kentucky, Dept Plant & Soil Sci, Lexington, KY 40546 USA 4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Yang, Fan,Baskin, Jerry M.,Baskin, Carol C.,et al. Effects of germination time on seed morph ratio in a seed-dimorphic species and possible ecological significance[J]. ANNALS OF BOTANY,2015,115(1):137-145.
APA	Yang, Fan,Baskin, Jerry M.,Baskin, Carol C.,Yang, Xuejun,Cao, Dechang,&Huang, Zhenying.(2015).Effects of germination time on seed morph ratio in a seed-dimorphic species and possible ecological significance.ANNALS OF BOTANY,115(1),137-145.
MLA	Yang, Fan,et al."Effects of germination time on seed morph ratio in a seed-dimorphic species and possible ecological significance".ANNALS OF BOTANY 115.1(2015):137-145.