盐地枸杞不同营养器官中盐离子分布规律Distribution of salty ions in different vegetative organs of Lycium bar-barum cultivated in salinized land
蔺海明;王龙强;贾恢先;肖雯;
摘要(Abstract)：
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。
关键词(KeyWords)： 枸杞;盐地;营养器官;盐离子;树龄
基金项目(Foundation): 国家科技攻关西部专项资助项目(2001BA901A33)。
作者(Author): 蔺海明;王龙强;贾恢先;肖雯;
Email:
DOI: 10.13925/j.cnki.gsxb.2006.05.019
参考文献(References)：
- [1] ZHAO K F(赵可夫). Plant salt resistant physiology (植物抗盐生理)[M]. Beijing: China Technology Press, 1993. (in Chinese)
- [2] ZHANG H Y (张海燕). A study on the characters of content inorganic ions in salt-stressed Suaeda salsa[J]. Acta Bot Boreal (西北植物学报), 2002, 22(1): 129-135. (in Chinese)
- [3] YANG Y M, NEWTON R J, MILLER F R. Salt tolerance in sorghum. I . Whole plant response to sodium chloride in S. bicolor and S. halepense[J]. Crop Science, 1990, 30: 775-781.
- [4] AN S Z, LIU X Y(安沙舟,刘晓媛). Lycium barbarum L.[M]. Beijing: Chinese Medicine Press,2001: 105-108. (in Chinese)
- [5] WANG L Q, LIN H M, XIAO W, et al(王龙强,蔺海明,肖雯,等). Physio -biochemistry indexes relative to salt -tolerance of Lycium barbarum L. in salinized land [J]. Journal of Gansu Agricultural Uni-versity(甘肃农业大学学报), 2004, 39(6): 611-614. (in Chinese)
- [6] WOLF O, JESCHKE W D. Modeling of sodium and potassium flows via phloem and xylem in the shoot of salt-stressed barely[J]. Journal of Plant Physiology, 1987, 128:371-386.
- [7] JESCHKE W D, JOHN S P, ATKINS A. Partitioning of K+, Na+, Mg2+ and Ca2+ through xylem and phloem to component organs of nodulated white lupin under mild salinity[J]. Journal of Plant Physiology, 1987, 128:77-93.
- [8] YIN L J, SHI D C, XUE P(殷立娟,石德成,薛萍). The distribution and accumulation of K+ and Na+ in five salt-tolerant forage plants in a Song-Nen plain steppe[J]. Acta Phytoecologica Sinica(植物生态学报), 1994,18 (1): 34-40. (in Chinese)
- [9] GREANWAY H, MUNNS R. Mechanisms of Salt Tolerance in Non-halophytes[J]. Annual Review of plant Physiology, 1980, 31: 149-190.
- [10]YINCH, TIANCY, ZHANGFS, et al(尹传华,田长彦,张福锁,等). Comparison between the characteristics of the content of mineral elements in three species of halophytes in Xinjiang[J]. Arid Zone Research(干旱区研究) ,2002,19(4): 42-44. (in Chinese)