Germination strategies of two halophytes in Salt Desert of northwestern China

CORC > 新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所(2010年以前数据)

	Germination strategies of two halophytes in Salt Desert of northwestern China
	Li ; Zhang ; XiMing
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2007
卷号	50 期号:s1 页码:115-121
关键词	SEED-GERMINATION HALOXYLON-AMMODENDRON SALINITY TEMPERATURE TOLERANCE GROWTH CHENOPODIACEAE BANKS SIZE RESPONSES
ISSN号	1006-9313
通讯作者	Li, L, Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China
中文摘要	The effects of temperatures and salinities on germination of two halophytes, Kalidium capsicum and Suaeda physophora in northwestern China, were tested, and their seed size and seed production were compared. It was found that seed of Suaeda physophora germinate under 10 degrees C, even about 0(o)C, and at a wide temperature range of 10-301 degrees C. It showed about 50% germination in the concentration up to 0.7 mol/L NaCl; optimum germination temperature of Kalidium capsicum was between 20 degrees C and 30 degrees C. The concentration of less than 0.3 mol/L NaCl inhibited absolutely its germination. Germination recovery was observed when salinities were reduced and total germination percentage exceeded 90%. Seeds of Kalidium, capsicum showed no loss of viability while Suaeda physophora an annual loss of viability of 75% at room temperature. Mean weight of seeds of Suaeda physophora was about 8.5 times of Kalidium capsicum, whereas the number of seeds of the latter was more than 20 times of the former. Suaeda physophora was observed to be dependent on periodic precipitation in germination and seedling growth. It suggests the evident trace of the species with zonation pattern. On the other hand, the germination of Kalidium capsicum was affected by unpredictable rain and inundation. This species might be a type without zonation patterns in halophytes. It was concluded that both species are halophytes, but they are established successfully by different adaptation strategies in the early stage of life history.
学科主题	植物生理学
收录类别	SCI
公开日期	2011-08-19
内容类型	期刊论文
源URL	[http://ir.xjlas.org/handle/365004/10344]
专题	新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据)
推荐引用方式 GB/T 7714	Li,Zhang,XiMing. Germination strategies of two halophytes in Salt Desert of northwestern China[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2007,50(s1):115-121.
APA	Li,Zhang,&XiMing.(2007).Germination strategies of two halophytes in Salt Desert of northwestern China.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,50(s1),115-121.
MLA	Li,et al."Germination strategies of two halophytes in Salt Desert of northwestern China".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 50.s1(2007):115-121.