| 外源Ca2+和水杨酸对苜蓿幼苗盐害的缓解效应 |
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| 引用本文： | 柳斌,周万海,师尚礼,赵平.外源Ca2+和水杨酸对苜蓿幼苗盐害的缓解效应[J].中国草地学报,2011,33(1). |
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| 作者姓名： | 柳斌 周万海 师尚礼 赵平 |
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| 作者单位： | 甘肃农业大学草业学院/草业生态系统教育部重点实验室/中-美草地畜牧业可持续发展研究中心,甘肃兰州,730070 |
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| 基金项目： | 国家"十一五"科技支撑计划，现代农业产业技术体系建设专项资金 |
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| 摘 要： | 通过盆栽试验,研究了NaCl胁迫下外源Ca2+与水杨酸(SA)对3种苜蓿(甘农3号、金皇后和新疆大叶)幼苗盐害的缓解效应.结果表明,外源Ca2+和SA对苜蓿幼苗的NaCl胁迫都有一定的缓解作用,能够显著(P<0.05)增加供试苜蓿植株的株高,提高植株叶绿素和根、叶K+含量,降低植株根、叶Na+含量和Na+/ K+.Ca2+和SA分别单独处理和二者复配处理对供试3个苜蓿品种的缓解效果不同,其中以Ca2+和SA复配组合处理效果最好.与对照相比,Ca2+和SA复配组合处理后甘农3号、金皇后和新疆大叶苜蓿幼苗的株高分别增加了46.1%、45.7%和45.2%,叶绿素含量依次为对照的3.71、2.84和1.61倍;甘农3号和金皇后苜蓿根部Na+含量分别降低了94.9%和89.4%;金皇后苜蓿叶部Na+含量降低了78.6%.Ca2+和SA复配组合处理对盐害的缓解效应大于单一Ca2+、SA处理;SA的缓解作用大于Ca2+.
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| 关 键 词： | 苜蓿 外源钙和水杨酸 盐胁迫 缓解效应 |
Ameliorating Effects of Exogenous Ca2+ and Salicylic Acid on Alfalfa Seedlings under Salt Stress |
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| LIU Bin,ZHOU Wan-hai,SHI Shang-li,ZHAO Ping.Ameliorating Effects of Exogenous Ca2+ and Salicylic Acid on Alfalfa Seedlings under Salt Stress[J].Chinese Journal of Grassland,2011,33(1). |
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| Authors: | LIU Bin ZHOU Wan-hai SHI Shang-li ZHAO Ping |
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| Institution: | LIU Bin,ZHOU Wan-hai,SHI Shang-li,ZHAO Ping(College of Grassland Science,Gansu Agricultural University/Key Laboratory of Ecosystem,Ministry of Education/Sino-U.S.Research Center for Grazingand Ecosystem Sustainability,Lanzhou,730070,China) |
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| Abstract: | The ameliorating effects of exogenous Ca2+ and salicylic acid(SA) on 3 cultivars seedlings of alfalfa(Medicago sativa L.cv.Gannong 3,Medicago sativa L.cv.Golden Empress and Medicago sativa L.cv.Xinjiang Daye) under salt stress(100 mM NaCl) were determined.The results showed that the exogenous Ca2+ and SA can alleviate the NaCl stress on alfalfa,and could increase plant height significantly(p<0.05),increase the chlorophyll content in plant and K+ content in root and leaf,decrease the content of Na+ and the r... |
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| Keywords: | Alfalfa Exogenous calcium and salicylic acid Salt stress Ameliorating effects |
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