摘要
采用水培法,以耐盐能力较弱的番茄品种江蔬14号为试验材料,研究了盐胁迫下不同种类、不同浓度外源多胺对番茄幼苗生长及质膜透性的影响。结果表明:100mmol·L-1的NaCl胁迫12d,番茄幼苗的株高相对生长率、主根长相对生长率及植株的干质量、鲜质量降低,叶片质膜透性增加;喷施外源多胺可以缓解盐胁迫对幼苗生长的抑制作用,其中100mg·L-1Spd、100mg·L-1Spm和150mg·L-1Put作用效果最为明显。
In this paper, by the method of hydroponics, the tomato cultivar‘Jiangshu No. 14＇ （salt-tolerance weaker cultivar） was chosen as experimental material. The effects of different kinds and concentration of exogenous polyamines on the growth of tomato seedlings and membrane permeability of tomato leaves under salt stress were studied. The results showed that under the stress of 100 mmol·L^-1 NaCl, the relative growth rate of plant height, relative growth rate of main roots, dry and fresh weight of tomato seedlings reduced, while the membrane permeability of tomato leaves increased on the 12th day. The suppressive effects of salt stress on tomato seedlings could be alleviated by spraying exogenous spermine （Spin）, spermidine （Spd）, putreseine （Put）, and the alleviative effects of 100 mg·L^-1 Spd, 100 mg·L^-1 Spm and 150 mg·L^-1 Put were distinctive.
出处
《中国蔬菜》
北大核心
2009年第6期31-35,共5页
China Vegetables
基金
西北农林科技大学科技创新项目(2007047)
西北农林科技大学引进人才基金项目(01140405)
关键词
番茄幼苗
NACL胁迫
精胺
亚精胺
腐胺
Tomato seedlings
NaCl stress
Spermine
Spermidine
Putrescine
作者简介
王乃强，专业方向：设施农业科学与工程，E-mail：wangqiangedu@163.com
通讯作者（Corresponding author）：胡晓辉，专业方向：设施园艺与无土栽培，E-mail：hxh1977@163.com
