文献类型：期刊文献

中文题名：9个楸树无性系对盐胁迫的差异响应

英文题名：Difference of response to salt stress of nine clones of Catalpa bungei

作者：王臣[1,2] 虞木奎[1] 王宗星[1] 张翠[1] 吴统贵[1] 成向荣[1] 陶静[2]

第一作者：王臣

机构：[1]中国林业科学研究院亚热带林业研究所;[2]乳山市林业局

年份：2011

卷号：35

期号：2

起止页码：20-24

中文期刊名：南京林业大学学报：自然科学版

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金："十一五"国家科技支撑计划(2006BAD24B082006BAD03A1603)

语种：中文

中文关键词：楸树;盐胁迫;生理指标;耐盐性评价

外文关键词：Catalpa bungei; salt stress; physiological characters; evaluation of salt tolerance

分类号：S718

摘要：以9个楸树(Catalpa bungei)无性系扦插苗为实验材料,研究了6种梯度(0、1、2、2.5、3、4g/kg)NaCl胁迫下各无性系的生长及生理特征,并用隶属函数法对其耐盐性进行综合评定。结果表明:盐胁迫对各楸树无性系苗高、地径净生长量的影响明显,且对苗高的影响大于对地径的影响。随盐浓度的增加,各无性系叶片叶绿素含量下降,相对电导率增大;02-2-5、14-6、YQ1等3个无性系的超氧化物歧化酶活性、可溶性糖和脯氨酸含量呈先上升后下降的变化趋势,其他无性系3个指标的变化规律差异较大。以隶属函数法综合评价的各无性系耐盐性由强至弱依次为:02-2-5、9-1、14-6、YQ1、1-3-36、02、2-2-3、02-2-2、07-1。
With the controlled experiment and different gradients of salt stress,the characters of growth and physiological biochemistry of cutting seedling of 9 clones of Catalpa bungei were studied under 6 salinity（NaCl） treatments,the salinity content was 0,1,2,2.5,3 and 4 g/kg of soil dry weight,respectively.Salt tolerance of 9 clones of C.bungei were evaluated by the fuzzy subordination methods.The results showed that growth rate of seedling height and root collar diameter were significantly influenced by salt stress and effect on the former was obvious.The chlorophyll content decreased with the increase of NaCl concentration in all clones,while relative conductivity increased.SOD activities,proline and soluble sugar contents increased first and then decreased with the increase of sale stress in clones of 02-2-5,14-6 and YQ1.While the 3 characters had great difference among other clones.According to analysis of membership function of fuzzy mathematics method to the 9 clones,the salt tolerance was in the order of 02-2-5,9-1,14-6,YQ1,1-3-36,02,2-2-3,02-2-2,07-1.