干旱区生态环境知识资源中心(Arid): Comparison of Thermal and Hydrotime Requirements for Seed Germination of SevenStipaSpecies From Cool and Warm Habitats

Arid

DOI	10.3389/fpls.2020.560714
	Comparison of Thermal and Hydrotime Requirements for Seed Germination of SevenStipaSpecies From Cool and Warm Habitats
	Zhang, Rui; Luo, Kai; Chen, Dali; Baskin, Jerry; Baskin, Carol; Wang, Yanrong; Hu, Xiaowen
通讯作者	Hu, XW
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2020
卷号	11
英文摘要	Temperature and water potential are two important environmental factors influencing germination and subsequent seedling establishment. Seed germination requirements vary with species and with the environment in which the seeds are produced.Stipaspecies dominate large areas of the Eurasian zonal vegetation, but comparisons of germination requirements betweenStipaspecies from different habitats is limited. We investigated the effects of temperature and water potential on seed germination ofS. grandis,S. purpurea, andS. penicillatafrom habitats with low temperatures and relatively abundant rainfall (cool habitats) andS. glareosa,S. breviflora,S. gobiea, andS. bungeanafrom habitats with relatively high temperatures and low amount of rainfall (warm habitats). Seeds of species from cool habitats had a higher base (T-b), optimal (T-o), and maximum (T-c) temperature than those of species from warm habitats, except for the base temperature ofS. purpurea. Response of six testedStipaspecies to water potential differed among species but not between habitats. Median water potential for germination was lowest forS. bungeana,S. penicillata, andS. gobiea. There was a negative correlation between hydrotime constant (theta(H)) and base water potential for 50% of the seeds of all species to germinate (psi(b(50))). Germination time of sevenStipaspecies in response to temperature and water was well predicted by thermal time and hydrotime models. Results of the present study on germination of these seven species ofStipamay provide useful suggestions for grassland restoration in different habitats.
英文关键词	seed germination Stipa temperature water potential habitat
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000579388300001
WOS关键词	HYDROTHERMAL TIME ; TEMPERATURE ; POPULATION ; RESPONSES ; GRASSLAND ; TOLERANCE ; DESERT ; STEPPE ; PLANTS
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326855
作者单位	[Zhang, Rui; Luo, Kai] Hainan Univ, Coll Trop Crops, Haikou, Hainan, Peoples R China; [Zhang, Rui; Luo, Kai; Chen, Dali; Wang, Yanrong; Hu, Xiaowen] Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Lanzhou, Peoples R China; [Baskin, Jerry; Baskin, Carol] Univ Kentucky, Dept Biol, Lexington, KY USA; [Baskin, Carol] Univ Kentucky, Dept Plant & Soil Sci, Lexington, KY USA
推荐引用方式 GB/T 7714	Zhang, Rui,Luo, Kai,Chen, Dali,et al. Comparison of Thermal and Hydrotime Requirements for Seed Germination of SevenStipaSpecies From Cool and Warm Habitats[J]. 兰州大学,2020,11.
APA	Zhang, Rui.,Luo, Kai.,Chen, Dali.,Baskin, Jerry.,Baskin, Carol.,...&Hu, Xiaowen.(2020).Comparison of Thermal and Hydrotime Requirements for Seed Germination of SevenStipaSpecies From Cool and Warm Habitats.FRONTIERS IN PLANT SCIENCE,11.
MLA	Zhang, Rui,et al."Comparison of Thermal and Hydrotime Requirements for Seed Germination of SevenStipaSpecies From Cool and Warm Habitats".FRONTIERS IN PLANT SCIENCE 11(2020).