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| 沙冬青种子萌发期抗逆性研究 | |
| 引用本文： | 马彦军,段慧荣,曹致中,李毅.沙冬青种子萌发期抗逆性研究[J].中国沙漠,2011,30(4):963-967. |
| 作者姓名： | 马彦军 段慧荣 曹致中 李毅 |
| 作者单位： | 1. 甘肃农业大学林学院,甘肃兰州730070;甘肃农业大学草业学院,甘肃兰州730070 2. 甘肃农业大学林学院,甘肃兰州,730070 3. 甘肃农业大学草业学院,甘肃兰州,730070 |
| 基金项目： | 国家科技支撑计划项目子课题(2006BAD04A-01); 国家林业局重点科研项目(2006-35); 甘肃省科技攻关项目(2GS064-A41-003-01)共同资助 |
| 摘 要： | 利用不同浓度的聚乙二醇(PEG)和NaCl溶液处理沙冬青种子,测定种子发芽率、发芽势、发芽指数、活力指数、幼苗叶片电导率、可溶性蛋白含量及丙二醛(MDA)含量。结果表明,随着胁迫强度增加,沙冬青种子萌发能力下降,幼苗叶片电导率上升,MDA含量上升。PEG浓度由5%升至15%时可溶性蛋白质含量上升,超过15%时,可溶性蛋白含量下降; NaCl浓度在0到1.5%范围内,沙冬青幼苗可溶性蛋白含量随NaCl浓度增大而上升。对两种胁迫条件下生长及生理指标的综合分析表明,沙冬青在种子萌发期和幼苗期有较强的抗旱和抗盐能力。 |
| 关 键 词： | 种子 沙冬青 渗透胁迫 抗逆性 |
| 收稿时间： | 2010-11-18 |
| 修稿时间： | 2010-12-22 |
Stress Resistance of Ammopiptanthus mongolicus Seeds during Germination Period |
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| MA Yan-jun,DUAN Hui-rong,CAO Zhi-zhong,LI yi.Stress Resistance of Ammopiptanthus mongolicus Seeds during Germination Period[J].Journal of Desert Research,2011,30(4):963-967. | |
| Authors: | MA Yan-jun DUAN Hui-rong CAO Zhi-zhong LI yi |
| Institution: | MA Yan-jun1,2,DUAN Hui-rong1,CAO Zhi-zhong2,LI yi1(1.College of Forestry,Gansu Agricultural University,Lanzhou 730070,China,2.Pratacultural College,China) |
| Abstract: | Ammopiptanthus mongolicus seeds were treated with PEG and NaCl solution of different concentration,and then the germination rate,germination potential,germination index,vigor index,and electrical conductivity,soluble protein and MDA contents of seedling leaves are measured.The results show that with the increasing of stress intensity,seed germination capability decreases,electrical conductivity of seedling leaves increases,and the MDA contents increase.Soluble protein contents increase when PEG concentratio... |
| Keywords: | seed Ammopiptanthus mongolicus osmotic stress stress resistance |
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