糠椴和紫椴耐盐生理生态特征比较研究  

Compare the physiological and ecological characters of salt-tolerance between Tilia mandschurica Rupr.er and Tilia amurensis

作　　者：张湘婕 李莉娜 代新竹 陈兴玲 ZHANG Xiang-jie;LI Li-na;DAI Xin-zhu;CHEN Xing-ling(Changchun Academy of Forestry Science,Changchun 130033,China)

机构地区：[1]长春市林业科学研究院,吉林长春130033

出　　处：《东北师大学报（自然科学版）》2024年第4期121-126,共6页Journal of Northeast Normal University(Natural Science Edition)

基　　金：吉林省科技发展计划重点研发项目(20230202094NC)。

摘　　要：通过分析不同盐梯度、不同处理时间条件下糠椴和紫椴叶片形态特征和生理指标的变化,研究了两种椴树抗盐能力的差异.结果表明:糠椴叶片在盐处理初期叶片开始变黄枯萎,随处理时间和强度的增加叶片干重和含水量均下降,而紫椴叶片生长特征基本保持不变;糠椴和紫椴的盐害指数和盐害率均随胁迫梯度的增加而增大,且紫椴盐害指数和盐害率均显著小于糠椴;糠椴和紫椴脯氨酸含量随盐处理梯度的增加而显著增大,且相同处理梯度糠椴和紫椴21~35 d处理后脯氨酸含量均最大;糠椴处理时间为21~35 d丙二醛含量重度盐碱处理组显著大于对照,紫椴不同处理时间丙二醛含量没有差异.紫椴抗盐性高于糠椴.The changes of leaf morphological characters and physiological indexes were compared between Tilia mandschurica Rupr.er and Tilia amurensis under different salt treatments and treatmentperiods to study the difference of salt-tolerance of the two species.The results showed that the leaves of Tilia mandschurica Rupr.er began to turn yellow and wither in the early stage of salt treatment and the leaf dry weight and water content decreased with the increasing of treatment level and treatment time.However,the growth characters of Tilia amurensis remained unchanged under all treatments.Salt damage index and salt damage rate of the two species increased with the increasing of salt treatment levels.Proline content in Tilia mandschurica Rupr.er and Tilia amurensis leaves both increased significantly from CK to T 2.The proline content reached the highest values under the same treatments when treated from 21 d to 35 d.The malonaldehydecontent were higher under T 2 than that under CK treatment when treated from 21 d to 35 d.There was no significant difference between all the treatment periods.Therefor,the salt resistance of Tilia amurensis was higher than that of Tilia mandschurica Rupr.er.

关 键 词：椴树 叶片 生理生态特征 耐盐性 

分 类 号：S687.1[农业科学—观赏园艺]