干旱区生态环境知识资源中心(Arid): 准噶尔无叶豆地理种群种子萌发特性

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	准噶尔无叶豆地理种群种子萌发特性
其他题名	Variation of seed sizes of Eremosparton songoricum geographic populations and germination characteristics
	马文宝 1; 张道远 2; 尹林克2
ISSN	1000-6060
出版年	2007
卷号	30 期号:5 页码:674-679
中文摘要	准噶尔无叶豆种子具有明显的地理种群大小变异的现象.对大、小种子在3种光照(持续光照,12/12小时光照/黑暗,全黑暗)、5个温度梯度(10 ℃,15 ℃,20 ℃,25 ℃,30 ℃)条件下的最适萌发条件进行研究,结果表明:大、小种子萌发的适宜光照条件均为12/12小时光照/黑暗,在持续黑暗与持续光照条件下的萌发率无显著差异;最适温度范围是20～25 ℃,大种子在20 ℃、25 ℃下的萌发率(＞85%),萌发指数均显著高于相同温度条件下小种子的萌发率(＜35%)和萌发指数.大种子存在种皮硬实所导致的物理性被迫休眠,而小种子除物理性休眠外,可能还存在其他形式的深度生理休眠.准噶尔无叶豆自然状态下萌发率极低(≤3%),经综合分析,认为种子硬实和深度生理休眠可能是自然状态下种子萌发的困难主要因素,而土壤的光照、温度及湿度不存在明显的对种子萌发的限制.
英文摘要	Eremosparton songoricum,a plant species that only occurs in Gurrbantuggut desert of China,is listed in the China Red Data Book as Class 3 national protected plants.The variation of seed sizes of E. songoricum in different geographic populations is obvious.In order to investigate the seed germination features in the different geographic populations,we collect the seeds in the wild population of Cainan station and Kalabulegen in Gurrbantuggut desert,Xinjiang Province in 2005.The germination characteristics of big and small E.songoricum seeds under thee lights and five temperatures conditions were studied.The results showed that the optimal light condition is 12/12 h light/dark and no difference was found between the germination of big and small seeds in light and in darkness.The optimal temperature range for germination was 20~25 ℃,yielding maximum germination and germination index.Big seeds have physical dormancy and small seeds not only exist physical dormancy but also may have the other physiological dormancy.The germination of [WTBX]E.songoricum seeds in the nature is very low(≤3%).After analysis, we considered that the hardness of seeds and physiological dormancy are mainly reason for low germination,however,the light,temperature and soil humidity are not the restriction in E.songoricum germination.
中文关键词	准噶尔无叶豆 ; 种子大小变异 ; 光照温度 ; 种子萌发
英文关键词	Eremosparton songoricum variation of seed sizes light temperature seed germination
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:2945409
来源机构	中国科学院新疆生态与地理研究所 ; 新疆农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/220940
作者单位	1.新疆农业大学林学院, 乌鲁木齐, 新疆 830052, 中国; 2.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	马文宝,张道远,尹林克. 准噶尔无叶豆地理种群种子萌发特性[J]. 中国科学院新疆生态与地理研究所, 新疆农业大学,2007,30(5):674-679.
APA	马文宝,张道远,&尹林克.(2007).准噶尔无叶豆地理种群种子萌发特性.,30(5),674-679.
MLA	马文宝,et al."准噶尔无叶豆地理种群种子萌发特性".30.5(2007):674-679.