干旱区生态环境知识资源中心(Arid): 埋藏对10种短命植物种子萌发特性的影响

Arid

	埋藏对10种短命植物种子萌发特性的影响
其他题名	Effect of Burial on Seed Germination Traits of 10 Ephemeral Plant Species
	张玲卫 1; 刘会良 2; 盛建东 1
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2018
卷号	35 期号:3 页码:633-639
中文摘要	选择分布于准噶尔荒漠的10种短命植物,研究在野外埋藏条件下种子萌发特性及其与种子大小和形状的关系,探讨荒漠短命植物的种群更新对策及生态适应机制。结果表明:当年结实的短命植物种子萌发率和萌发速率较低,说明大部分种子存在休眠现象;埋藏9个月后短命植物的种子萌发情况表现出差异,可根据萌发格局将植物种分为3类:埋藏促进型(如旱麦草、庭荠、甘新念珠芥、小车前、柯尔车前、鳞果海罂粟)、埋藏抑制型(如弯果胡卢巴)和埋藏不变型(如角果毛茛、鸟头荠、播娘蒿);当年结实种子和沙埋种子的萌发率、萌发速率与种子大小无显著相关关系,而当年结实种子和沙埋种子萌发速率与种子形状呈正相关关系。总之,埋藏后短命植物种子萌发特性及休眠释放差异显著,是该物种长期适应沙漠环境形成异质的种群更新对策及生态适应机制。
英文摘要	Seed germination of 10 ephemeral plant species under burial treatment and their relationship with seed mass and seed shape were tested. The aims were determined at the aspects of the population regeneration strategies and ecological mechanisms of the ephemeral plant species in the Junggar Desert. The results showed that the seed mass and seed shape were significantly different among the species. The germination percentages and rates of all the fresh matured seeds were very low, indicating that most fresh matured seeds of the ephemeral plant species had dormancy. The germination traits of the 10 ephemeral plant species under a 9-month burial treatment were significantly different. Based on their germination patterns, the plant species were divided into three types: improving type (Eremopyrum triticeum,Alyssum desertorum,Neotorularia korolkovii,Plantago minuta,Plantago cornuti and Glaucium squamigerom) , inhibiting type (Trigonella arcuata) and constant type (Ceratocephalus orthoceras,Euclidium syriacum and Descurainia sophia) . There were no significant correlations between the germination percentage and germination rate and the seed mass for the fresh matured seeds and burial treatment seeds,however, there were the positive correlations between the germination percentage and germination rate and the seed shape for the fresh matured seeds and burial treatment seeds. It could be concluded that the germination traits and dormancy release mechanisms differed among species,and the population regeneration strategies and ecological mechanisms of the species were vital under natural selection in desert. This conclusions are greatly useful for conserving and regenerating ephemeral plants under severe environment in desert.
中文关键词	短命植物 ; 种子性状 ; 萌发速率 ; 更新策略 ; 埋藏 ; 准噶尔盆地 ; 新疆
英文关键词	ephemeral plant seed shape germination rate population regeneration burial Junggar Basin Xinjiang
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6245062
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/2XILL650/237655
作者单位	1.新疆农业大学草业与环境科学学院, 新疆土壤与植物生态过程重点实验室, 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, 中国科学院干旱区生物地理与生物资源重点实验室, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	张玲卫,刘会良,盛建东. 埋藏对10种短命植物种子萌发特性的影响[J]. 中国科学院新疆生态与地理研究所, 新疆农业大学,2018,35(3):633-639.
APA	张玲卫,刘会良,&盛建东.(2018).埋藏对10种短命植物种子萌发特性的影响.干旱区研究,35(3),633-639.
MLA	张玲卫,et al."埋藏对10种短命植物种子萌发特性的影响".干旱区研究 35.3(2018):633-639.