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

	Is bi-seasonal germination an optimal choice for an ephemeral plant living in a cold desert?
	Yang Shanlin; Shi Xiang; Wang Shaoming; Liu Jiashu; Meng Fanxiang; Pang Wei
来源期刊	Journal of Arid Land
ISSN	1674-6767
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
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6487041
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336109
作者单位	Yang Shanlin, College of Agriculture, Shihezi University, Shihezi, Xinjiang 832011, China.; Shi Xiang, College of Agriculture, Shihezi University, Shihezi, Xinjiang 832011, China.; Liu Jiashu, College of Agriculture, Shihezi University, Shihezi, Xinjiang 832011, China.; Pang Wei, College of Agriculture, Shihezi University, Shihezi, Xinjiang 832011, China.; Wang Shaoming, College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832011, China.; Meng Fanxiang, College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832011, 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.