盐胁迫对西瓜和甜瓜种子萌发的影响  

Effects of Salt Stress on the Germination of Citrullus lanatus and Cucumis melo Seeds

作　　者：方苏[1] 闫兴富[1] 周立彪[1] 

机构地区：[1]北方民族大学生物科学与工程学院,银川750021

出　　处：《湖北农业科学》2012年第8期1595-1598,共4页Hubei Agricultural Sciences

基　　金：国家民族事务委员会生态系统模型及应用重点实验室项目(2010SY07);北方民族大学科研项目(2009Y039)

摘　　要：在室内人工气候箱控制的条件下,研究了不同浓度(30、50、100、200 mmol/L)复合钠盐(NaCl+Na2CO3+Na2SO4)溶液胁迫对西瓜和甜瓜种子萌发的影响。结果表明,未经盐胁迫处理的西瓜和甜瓜种子的萌发率很高,分别为97.78%和98.89%;经过盐胁迫处理的种子萌发率显著降低,其中以甜瓜种子的萌发率降低幅度更大,30、50、100、200 mmol/L盐溶液处理的种子萌发率分别降低到97.78%、75.56%、35.56%、30.00%;随着盐浓度的增大,种子萌发进程减慢(萌发速率系数增大),萌发指数和幼苗活力指数随着盐胁迫浓度的增大而减小。Under the conditions controlled by artificial climate box in laboratory,the stress effects of different concentration（30,50,100,200 mmol/L respectively） of complex sodium salt（NaCl ＋ Na2CO3 ＋ Na2SO4） on the germination of Citrullus lanatus（Thunb.） Matsum.et Nakai and Cucumis melo L.seeds were examined.The result indicated that the germination percentage of the seeds untreated with salt was 97.78% and 98.89% for C.lanatus and C.melo seeds respectively;which decreased by the treatment of salt,the germination rate of C.melo seeds was 97.78%,75.56%,35.56% and 30.00% at the salt concentrations of 30,50,100 and 200 mmol/L respectively.With the increasing of salt concentration,germination time delayed（coefficient of germination rate increased）;and the germination index and vigor index decreased.

关 键 词：西瓜 甜瓜 复合钠盐 种子萌发 胁迫效应 

分 类 号：S65[农业科学—果树学] Q948.113[农业科学—园艺学]