| 盐地枸杞不同营养器官中盐离子分布规律 |
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| 引用本文： | 蔺海明,王龙强,贾恢先,肖雯.盐地枸杞不同营养器官中盐离子分布规律[J].果树学报,2006,23(5):732-735. |
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| 作者姓名： | 蔺海明 王龙强 贾恢先 肖雯 |
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| 作者单位： | 1. 甘肃农业大学农学院,兰州,730070
2. 甘肃农业大学理学院,兰州,730070 |
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| 摘 要： | 为了探明盐地枸杞适应盐渍生境的生理机制,以盐碱地种植的枸杞为试材,研究了不同营养器官中3种盐离子的分布特征以及树龄对盐离子含量的影响。结果表明:Na+、K+、Cl-3种离子在枸杞各营养器官中的含量不同,且差异显著,其中Na+和Cl-在成叶中的含量最高,幼叶、茎次之,细根中的含量最低,而K+在各器官中的含量为幼叶>茎>成叶>细根,地上部分的Na+、K+和Cl-含量分别是地下部分的5．303倍、4．645倍和4．180倍;树龄不同,枸杞各营养器官所含盐离子含量也不同,与1年生枸杞相比,4年生枸杞成、幼叶中的Na+含量分别下降了18．77％和52．01％, Cl-含量也分别下降了23．56％和18．07％,K+含量分别增加了46．48％和59．35％,细根中的Na+、K+和Cl-含量分别下降了62．82％、106．02％和84．78％。表明在盐渍逆境中生存的枸杞有其自己特殊的耐盐机制,且经过多年的种植对盐逆境的适应性也逐渐提高。
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| 关 键 词： | 枸杞 盐地 营养器官 盐离子 树龄 |
| 文章编号： | 1009-9980（2006）05-732-04 |
| 收稿时间： | 2006-01-23 |
| 修稿时间： | 2006-05-08 |
Distribution of salty ions in different vegetative organs of Lycium barbarum cultivated in salinized land |
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| LIN Hai-min,WANG Long-qiang,JIA Hui-xian,XIAO Wen.Distribution of salty ions in different vegetative organs of Lycium barbarum cultivated in salinized land[J].Journal of Fruit Science,2006,23(5):732-735. |
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| Authors: | LIN Hai-min WANG Long-qiang JIA Hui-xian XIAO Wen |
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| Institution: | 1 Agronomy College, Gansu Agricultural University, Lanzhou , Gansu 730070 China; 2 Science College, Gansu Agricultural University, Lanzhou, Gansu 730070 China |
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| Abstract: | In order to research deeply the physiological mechanism of Lycium barbarum L. adapting to salinized land, distribution of three kinds of salty ions in its different vegetative organs and the effect of tree age on salt content were studied. The results indicated that the contents of Na+、K+ and Cl- in different vegetative organs were different. The contents of Na+ and Cl-were the highest in old leaves, then young leaves and stems, and the lowest was in thin roots. The content of K+ was also different among organs, i.e. young leaves>stems>old leaves>thin roots. As a whole, the contents of Na+、K+ and Cl- in overground parts were 5.303, 4.645 and 4.180 times those in underground parts respectively. The contents of salty ions in vegetative organs were also different with tree ages. Compared with one-year old tree, the contents of Na+ in old and young leaves of 4-year old tree were 18.77% and 52.01% less, Cl- 23.56% and 18.07% less, K+ 46.48% and 59.35% more, respectively; On the other hand, the contents of Na%K+ and Cl- in roots were 62.82% , 106.02% and 84.78% less respectively. From the above analysis, it could be concluded that L. barbarum L. grown in salinized land has its specific physiological mechanism adapting to salinized environment and the adaption would advanced after it was grown successively. |
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| Keywords: | Lycium barbarum L Salinized land Vegetative organs Salty ions Tree age |
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