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	荒漠河岸林2种典型植物的耐盐性比较
其他题名	Salt Tolerance Comparison of Two Typical Plants in Desert Riparian Forest
	綦艳林 1; 朱雅娟 1; 贾志清 1; 史军辉 2
来源期刊	林业科学研究
ISSN	1001-1498
出版年	2011
卷号	24 期号:3 页码:327-333
中文摘要	在新疆尉犁县的天然荒漠河岸林里,选择了3个土壤盐度不同的样地,测定了胡杨和柽柳叶片的脯氨酸含量、K+/Na+、氯离子(Cl-)含量、超氧化物歧化酶(SOD)活性和丙二醛(MDA)含量等5个生理指标,并利用模糊数学隶属函数法对二者的耐盐性进行了综合评价。结果表明:随着土壤盐胁迫的增强,胡杨叶片的脯氨酸含量总体上呈增加趋势;K+/Na+变化不明显,Cl-含量和SOD活性则先增加后减少,MDA含量则呈减少趋势;而柽柳叶片的脯氨酸含量、K+/Na+、SOD活性与MDA含量呈增加趋势,Cl-含量逐渐减少。在3个样地中胡杨叶片的脯氨酸含量均显著高于柽柳(p<0.05),其中,样地1胡杨和柽柳叶片的脯氨酸含量的平均值分别为902.70、732.99mug.g-1。在土壤0 10 cm盐度较高的样地1和样地2中,柽柳叶片的K+/Na+和MDA含量显著高于胡杨(p<0.05);其中,样地1胡杨和柽柳的K+/Na+分别为0.060、0.095,MDA含量分别为8.23、13.96mumol.g-1。在样地1和样地2中,胡杨的叶片Cl-含量显著高于柽柳(p<0.05);其中,样地2的胡杨和柽柳的Cl-含量最高,分别为2.59、1.49mug.mg-1。在样地1中,柽柳的SOD活性(0.43 U.mg-1.min-1)显著高于胡杨(0.37 U.mg-1.min-1)(p<0.05)。模糊数学隶属函数分析得出的初步结论是胡杨的耐盐性高于柽柳。二者的耐盐机理不同:在土壤盐度较高的条件下,胡杨主要通过增加叶片脯氨酸含量和降低叶片Cl-含量耐盐,而柽柳则主要通过增加叶片脯氨酸含量,提高叶片的K+/Na+,增强SOD活性耐盐。
英文摘要	Five physiological indexes(leaf proline content,K+/Na+,Cl-content,SOD activity,and MDA content)were chosen to evaluate the comprehensive salt tolerance of Populus euphratica and Tamarix spp.in natural riparian forest by subordinate function in Yuli County.With the increase of soil salinity,the leaf proline content of P.euphratica increased,its K+/Na+ did not change,the Cl-content and SOD activity increased then decreased,MDA content decreased.However,the leaf proline content,K+/Na+,SOD activity and MDA content of Tamarix spp.increased and its Cl-content decreased.The leaf proline content of P.euphratica was significantly higher than Tamarix spp.in three plots(p<0.05).In plot 1 with the highest soil salt content,the leaf proline contents of P.euphratica and Tamarix spp.were 902.70 and 732.99 mug.g-1.The leaf K+/Na+ and MDA content of Tamarix spp.were significantly higher than that of P.euphratica in plots 1 and 2 with higher soil salt content in 0-10 cm depth(p<0.05).In plot 1,the leaf K+/Na+ of P.euphratica and Tamarix spp.were 0.060 and 0.095 and the leaf MDA content of P.euphratica and Tamarix spp.were 8.23 and 13.96 mumol.g-1.The leaf Cl-content of P.euphratica was significantly higher than that of Tamarix spp.in plot 1 and 2(p<0.05).The leaf Cl-content of P.euphratica and Tamarix spp.were 2.59 and 1.49 mug.mg-1 in plot 2.The leaf SOD activity of Tamarix spp.(0.43 U.mg-1.min-1)was significantly higher than that of P.euphratica(0.37 U.mg-1.min-1)in plots 1(p<0.05).The preliminary conclusion is that the salt tolerance of P.euphratica is higher than that of Tamarix spp.,according to the results of subordinate function.The salt tolerance mechanism is different in two plants:P.euphratica tolerates salt by increasing leaf proline and decreasing leaf Cl-content,whereas Tamarix spp.tolerates salt by increasing leaf proline content,improving leaf K+/Na+ and enhancing SOD activity under higher soil salinity condition.
中文关键词	胡杨 ; 柽柳 ; 耐盐性 ; 生理指标 ; 隶属函数
英文关键词	Populus euphratica Tamarix spp. salt tolerance physiological indexes subordinate function
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:4226803
来源机构	中国林业科学研究院荒漠化研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226778
作者单位	1.中国林业科学研究院荒漠化研究所, 北京 100091, 中国; 2.新疆林业科学院, 乌鲁木齐, 新疆 830000, 中国
推荐引用方式 GB/T 7714	綦艳林,朱雅娟,贾志清,等. 荒漠河岸林2种典型植物的耐盐性比较[J]. 中国林业科学研究院荒漠化研究所,2011,24(3):327-333.
APA	綦艳林,朱雅娟,贾志清,&史军辉.(2011).荒漠河岸林2种典型植物的耐盐性比较.林业科学研究,24(3),327-333.
MLA	綦艳林,et al."荒漠河岸林2种典型植物的耐盐性比较".林业科学研究 24.3(2011):327-333.