干旱区生态环境知识资源中心(Arid): 钠盐胁迫对河西走廊荒漠绿洲过渡带典型一年生草本植物种子萌发的影响

Arid

	钠盐胁迫对河西走廊荒漠绿洲过渡带典型一年生草本植物种子萌发的影响
其他题名	Effects of sodium salt stress on seed germination of typical annuals in a desert-oasis ecotone of Hexi Corridor,China
	王国华; 郭文婷; 缑倩倩
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2020
卷号	31 期号:6 页码:1941-1947
中文摘要	研究不同浓度盐分( NaCl和NaHCO_3, 0、40、80、120、160和200 mmol·L~(-1) )对6种河西走廊荒漠绿洲边缘人工林典型一年生草本植物(禾本科:狗尾草、虎尾草和小画眉草;藜科:雾冰藜、刺沙蓬和蒙古虫实)种子在当年秋季和次年春季的萌发和复萌的影响。结果表明: NaCl和NaHCO_3对6种植物种子的萌发有显著影响,NaHCO_3对种子萌发的抑制作用大于NaCl。NaHCO_3浓度达到160 mmol·L~(-1)时,6种植物基本不萌发或萌发率较低; NaCl浓度达到200 mmol·L~(-1)时,6种植物仍能够保持相对较高的萌发率。种子当年秋季萌发率( 2.8%~ 20.0%)远低于次年春季萌发率( 21.7% ~ 81.6%), 秋季复萌率( 3.3% ~ 20.0%)低于春季复萌率( 5.0%~41.1%), 当年生种子秋季多保持休眠,次年春季休眠减弱。6种一年生草本植物种子的耐盐性为:虎尾草>狗尾草>刺沙蓬>雾冰藜>蒙古虫实>小画眉草。
英文摘要	We assessed the effects of different concentrations of salts ( 0,40,80,120,160 and 200 mmol·L~(-1) ) on the seed germination and re-germination of six typical annuals ( Gramineae: Setaria viridis,Chloris virgata and Eragrostis minor; Chenopodiaceae: Bassia dasyphylla,Salsola ruthenica and Corispermum mongolicum) in autumn of current year and next spring,with NaCl and NaHCO_3 as neutral sodium salt and alkaline sodium salt. The results showed that NaCl and NaHCO_3 significantly affected seed germination of the six species. The inhibition effect of NaHCO_3 on seed germination was stronger than NaCl. When the concentration of NaHCO_3 reached to 160 mmol·L~(-1),germination rates of the six species were low. However,when the concentration of NaCl reached to 200 mmol·L~(-1),the germination rates of the six species were still high. The germination ( 2.8%-20.0%) and re-germination rates ( 3.3%-20.0%) in current autumn were much lower than those in next spring,with values of 21.7%-81.6% and 5.0%-41.1%,respectively. In autumn,most of the current year's seeds kept dormancy,but the dormancy weakened in next spring. The salt tolerance of seeds of the six annual species was in the order of C. virgata > S. viridis > S. ruthenica > B. dasyphylla > C. mongolicum > E. minor.
中文关键词	钠盐胁迫 ; 一年生植物 ; 禾本科 ; 藜科 ; 萌发 ; 复萌
英文关键词	sodium-salt stress annual plant Gramineae Chenopodiaceae germination re-germination
类型	Article
语种	中文
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6740365
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336572
作者单位	王国华, 山西师范大学地理科学学院;;中国科学院西北生态环境资源研究院临泽内陆河流域研究站, ;;, 临汾;;兰州, 山西;; 041000;;730000, 中国.; 郭文婷, 山西师范大学地理科学学院, 临汾, 山西 041000, 中国.; 缑倩倩, 山西师范大学地理科学学院, 临汾, 山西 041000, 中国.
推荐引用方式 GB/T 7714	王国华,郭文婷,缑倩倩. 钠盐胁迫对河西走廊荒漠绿洲过渡带典型一年生草本植物种子萌发的影响[J],2020,31(6):1941-1947.
APA	王国华,郭文婷,&缑倩倩.(2020).钠盐胁迫对河西走廊荒漠绿洲过渡带典型一年生草本植物种子萌发的影响.应用生态学报,31(6),1941-1947.
MLA	王国华,et al."钠盐胁迫对河西走廊荒漠绿洲过渡带典型一年生草本植物种子萌发的影响".应用生态学报 31.6(2020):1941-1947.