干旱区生态环境知识资源中心(Arid): Is bi-seasonal germination an optimal choice for an ephemeral plant living in a cold desert?

Arid

DOI	10.1007/s40333-019-0001-1
	Is bi-seasonal germination an optimal choice for an ephemeral plant living in a cold desert?
	Yang, Shanlin 1; Shi, Xiang 1; Wang, Shaoming 2; Liu, Jiashu 1; Meng, Fanxiang 2; Pang, Wei 1
通讯作者	Wang, Shaoming
来源期刊	JOURNAL OF ARID LAND
ISSN	1674-6767
EISSN	2194-7783
出版年	2019
卷号	11 期号:2 页码:280-291
英文摘要	Research on germination strategies has been proposed as a tool for understanding the evolutionary patterns of plant species living in extreme climate conditions. Previous research has concentrated on spring-germinated plants, while there has been little investigation on the ecological significance of ephemeral plants that germinate in both autumn and spring. The biological characteristics and life history strategies of autumn- and spring-germinated plants of Hypecoum erectum L. that belongs to Hypecoum in Papaveraceae family in the southern part of the Gurbantunggut Desert, China, were investigated from 2016 to 2017. Results showed that: (1) the interval from seedling emergence to the end of the life cycle in autumn-germinated plants (202-208 d) was significantly longer than that in spring-germinated plants (53-65 d); (2) the height, crown, principal axis and the number of leaves of autumn-germinated plants were much greater than those of spring-germinated plants; (3) allocation of dry mass to reproduction was 30.24% (+/- 2.41%) and 10.12% (+/- 0.68%) in autumn- and spring-germinated plants, respectively. Autumn-germinated seedlings of H. erectum had an advantage in avoiding the competition between annual and perennial herbs that had longer periods of vegetative growth. Spring-germinated seedlings need to ensure the survival of population when only a fewer autumn-germinated seedlings successfully overwinter. In an unpredictable environment, the germination strategy of bet hedging not only utilizes the resources and reduces the competition intensity in offspring, but also ensures the survival of the plant population.
英文关键词	ephemeral plant Gurbantunggut Desert Hypecoum erectum L spring-germinated plants autumn-germinated plants
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000465023800010
WOS关键词	ALLOCATION ; AUTUMN ; SIZE ; TIME
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216783
作者单位	1.Shihezi Univ, Coll Agr, Shihezi 832011, Peoples R China; 2.Shihezi Univ, Coll Life Sci, Shihezi 832011, Peoples R China
推荐引用方式 GB/T 7714	Yang, Shanlin,Shi, Xiang,Wang, Shaoming,et al. Is bi-seasonal germination an optimal choice for an ephemeral plant living in a cold desert?[J],2019,11(2):280-291.
APA	Yang, Shanlin,Shi, Xiang,Wang, Shaoming,Liu, Jiashu,Meng, Fanxiang,&Pang, Wei.(2019).Is bi-seasonal germination an optimal choice for an ephemeral plant living in a cold desert?.JOURNAL OF ARID LAND,11(2),280-291.
MLA	Yang, Shanlin,et al."Is bi-seasonal germination an optimal choice for an ephemeral plant living in a cold desert?".JOURNAL OF ARID LAND 11.2(2019):280-291.