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当前位置: 首页 > 文章 > NaCI胁迫对古巴牛乳树矿质离子吸收的影响 热带作物学报 2013,34 (9) 1646-1649
Position: Home > Articles > The Effect of NaCl Stress on the Ion Absorbtion of  Manilkara roxburghiana (Wight) Dubard Chinese Journal of Tropical Crops 2013,34 (9) 1646-1649

NaCI胁迫对古巴牛乳树矿质离子吸收的影响

作  者：
刘育梅;宋志瑜;卢昌义
关键词：
古巴牛乳树;离子效应;抗性方式
摘  要：
为了研究古巴牛乳树在NaCl胁迫下的离子效应及抗性方式.本试验测定了古巴牛乳树根、枝条、叶在NaCl胁迫下C1一、Na+、k+、Ca2+的含量及分布特点.结果表明:古巴牛乳树根、枝条、叶的Cl-、Na+、Ca2+含量随处理浓度的提高而增加.K+、K+/Na+随处理浓度升高而降低;在8%.处理浓度时,根、枝条、叶中的Cl一含量分别为对照的7.86、11.82、16.53倍,Na+含量分别为对照的3.36、3.04、4.40倍,K+/Na'分别为0.17、0.25、0.16:相同处理浓度下,Cl-、U、Ca2+含量高低顺序均为:根〈枝条〈叶,Na+含量高低顺序为:枝条〈根〈叶;叶中的C1-、Na+、k+、Ca2+等4种离子含量均比根、枝条高.说明古巴牛乳树吸收Cl-、Na+、k+、Ca2+后,较大部分的将4种离子输送至叶片中.推测其抗性方式为耐盐性.
译  名：
The Effect of NaCl Stress on the Ion Absorbtion of  Manilkara roxburghiana (Wight) Dubard
关键词：
M. roxburghiana%Ion absorbtion%Mode of resistance
摘  要：
In order to study the ion response and mode of salinity resistance of M. roxburghiana, the contents and distribution of 4 kinds of ions(Cl-, Na+, K+, CaZ+)in roots, branches, leaves under NaCI stress were assayed. The results showed that CI-, Na+, Ca2+ contents in M. roxburghiana roots, branches, leaves raised with the rising NaC1 concentration, while K+ content and the ratio of K+/Na+ dropped. The Cl-content in roots, branches, leaves was respectively 7.86,11.82, 16.53 times higher than that in the control under 8%v NaC1 and Na+ content was respectively 3.36 times, 3.04 times, 4.40 times. The K+/Na+ ratio in roots, branches , leaves was respectively 0.17, 0.25, 0.16. The CI-, K+, Ca2+contents followed the order: roots〈branches〈leaves, Na+content did: branches〈roots〈 leaves. The 4 kinds of ions contents were larger in leaves than in branches or roots under the same NaC1 concentration. The results showed most of the ions were transported to the leaves after entering the plants. It was deduced that the mode of salinity resistance was salt tolerance for M. roxburghiana and that the imbalance of Ca2+ related to the salt damage.

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