Seed dormancy and germination of a critically endangered plant, Elaeagnus mollis, on the Loess Plateau of China

doi:10.1007/s10342-020-01342-z

	Seed dormancy and germination of a critically endangered plant, Elaeagnus mollis, on the Loess Plateau of China
	Gao, Ruiru ; Hou, Jing ; Zhao, Ruihua ; Yang, Xuejun 1; Hou, Xinyu ; Huo, Liping ; Hidayati, Siti N.; Walck, Jeffrey L.
	2021
发表期刊	EUROPEAN JOURNAL OF FOREST RESEARCH
ISSN	1612-4669
卷号	140 期号:2 页码:451-461
摘要	Elaeagnus mollis is an endangered species narrowly distributed on the south-eastern Loess Plateau of China. Natural regeneration of populations is highly restricted by low seed germination. The aim of this study was to explore why germination is low and how to enhance germination of the species. Field and laboratory experiments were carried out to examine the effects of temperature, light, drought and NaCl on seed germination and the effects of the seed coat, GA(3), cold and warm stratification and after-ripening on dormancy release. Our results showed that (1) fruits (0.65 g/fruit) and seeds (0.14 g/seed) were relatively large, the embryo was surrounded by a hard and permeable seed coat and a lignified calyx tube, and more than half of the fresh seeds were not viable; (2) fresh, intact seeds did not germinate, but germination of scarified seeds was highest at 5/15 degrees C in continuous darkness; (3) dormancy was not released by GA(3) and cold stratification (5 degrees C), but significantly released by variable temperature stratification and field burial, indicating that seeds had deep physiological dormancy; and (4) germination was significantly enhanced by median drought (-0.6 MPa) and NaCl (0.34 M), and decay was inhibited beyond -0.4 MPa osmotic potential and 0.225 M NaCl. Our results suggested that, with habitat loss and climate warming, regeneration from seeds in natural populations will continue to be negatively affected, and the range of the populations will further contract.
关键词	Elaeagnus mollis Seed dormancy Germination Cold stratification Climate change
学科领域	Forestry
DOI	10.1007/s10342-020-01342-z
收录类别	SCI
语种	英语
WOS关键词	CLIMATE-CHANGE ; EXTINCTION RISK ; DROUGHT STRESS ; TEMPERATURE ; POPULATIONS ; VIABILITY ; GROWTH ; PERSISTENCE ; ORCHID ; BANKS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000604488800004
出版者	SPRINGER
文献子类	Article
出版地	NEW YORK
EISSN	1612-4677
资助机构	National Natural Science Foundation of China [31770514, 31470476]
作者邮箱	widesea2001@163.com ; xjyang_jx@ibcas.ac.cn
引用统计	被引频次：6[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/2S10CLM1/26452
专题	植被与环境变化国家重点实验室
作者单位	1.Shanxi Normal Univ, Sch Life Sci, Linfen 041000, Shanxi, Peoples R China 2.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing 100049, Peoples R China 3.Hidayati, Siti N.; Walck, Jeffrey L.] Middle Tennessee State Univ, Dept Biol, Murfreesboro, TN 37132 USA
推荐引用方式 GB/T 7714	Gao, Ruiru,Hou, Jing,Zhao, Ruihua,et al. Seed dormancy and germination of a critically endangered plant, Elaeagnus mollis, on the Loess Plateau of China[J]. EUROPEAN JOURNAL OF FOREST RESEARCH,2021,140(2):451-461.
APA	Gao, Ruiru.,Hou, Jing.,Zhao, Ruihua.,Yang, Xuejun.,Hou, Xinyu.,...&Walck, Jeffrey L..(2021).Seed dormancy and germination of a critically endangered plant, Elaeagnus mollis, on the Loess Plateau of China.EUROPEAN JOURNAL OF FOREST RESEARCH,140(2),451-461.
MLA	Gao, Ruiru,et al."Seed dormancy and germination of a critically endangered plant, Elaeagnus mollis, on the Loess Plateau of China".EUROPEAN JOURNAL OF FOREST RESEARCH 140.2(2021):451-461.

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