论文部分内容阅读
以旱玉5号和太单32为材料,在20%PEG模拟干旱条件下,研究外源甜菜碱对玉米幼苗抗旱性的诱导效应。结果表明,水分胁迫显著降低了玉米幼苗的生物量和叶片相对含水量,提高了幼苗的根冠比和渗透调节物质、抗氧化酶活性、ABA含量。喷施0.5mmol/L的甜菜碱溶液能缓解玉米幼苗的水分胁迫,提高幼苗的生物量、叶片相对含水量、根冠比及渗透调节物质、抗氧化酶活性、ABA含量。
The effects of exogenous betaine on the drought resistance of maize seedlings were studied under the conditions of 20% PEG simulated drought. The results showed that water stress significantly reduced the biomass of maize seedlings and leaf relative water content, and increased the root / shoot ratio, osmotic adjustment substance, antioxidant enzyme activity and ABA content of seedlings. Spraying 0.5mmol / L betaine solution could relieve the water stress of corn seedling, and improve the seedling biomass, relative water content, root / shoot ratio, osmotic adjustment substance, antioxidant enzyme activity and ABA content.