甜菜碱对盐胁迫下小麦种子萌发和幼苗生长的影响  

Effects of betaine on seed germination and seedling growth of wheat under salt stress

作　　者：章可奕 李文鑫 杜锦 田秀平 Zhang Keyi;Li Wenxin;Du Jin;Tian Xiuping(College of Agronomy and Resources Environment,Tianjin Agricultural University,Tianjin 300392,China)

机构地区：[1]天津农学院农学与资源环境学院,天津300392

出　　处：《天津农学院学报》2024年第4期8-11,共4页Journal of Tianjin Agricultural University

基　　金：天津市企业科技特派员项目(21ZYCGSN00050)。

摘　　要：为提高小麦在盐土中的萌发和生长能力,采用甜菜碱处理小麦种子,在不同浓度NaCl溶液下进行发芽试验,研究不同质量分数甜菜碱对盐胁迫下小麦种子发芽及幼苗生长的影响。试验结果表明:40 mmol/L和80 mmol/L NaCl胁迫下,0.05%和0.10%甜菜碱浸种可以显著提高小麦种子的发芽势、活力指数、幼苗鲜质量、干质量和苗高;0.05%和0.10%甜菜碱浸种能显著提高80 mmol/L NaCl胁迫下小麦幼苗的根长,但0.05%甜菜碱浸种不能显著提高40 mmol/L NaCl胁迫下小麦幼苗的根长;0.05%和0.10%甜菜碱浸种虽然能提高小麦种子的发芽率和发芽指数,但和对照比差异不显著;0.05%和0.10%甜菜碱浸种可通过增加种子的活力来增强小麦种子的幼苗生长能力。In order to improve the germination and growth ability of wheat in saline soil,the germination experiment of wheat seeds treated with betaine was carried out under different concentration of NaCl solution,and the effects of betaine on seed germination and seedling growth of wheat under salt stress were studied.The results showed that germination potential,vigor index,fresh and dry weight of seedlings and seedling height of wheat increased significantly treated with 0.05%and 0.10%betaine at 40 mmol/L and 80 mmol/L NaCl,Soaking seeds with 0.05%and 0.10%betaine could significantly increase the root length under 80 mmol/L NaCl,but soaking seeds with 0.05%betaine couldn’t significantly increase the root length under 40 mmol/L NaCl.Seed soaked with 0.05%and 0.10%betaine could improve the germination rate and germination index of wheat seeds,but there was no significant difference compared with the control.Seed soaked with 0.05%and 0.10%betaine could enhance the seedling growth of wheat by increasing seed vigor.

关 键 词：小麦 甜菜碱 盐胁迫 萌发 

分 类 号：S513[农业科学—作物学]