摘要
通过小麦浸种、水培、大面积喷施和茄子盆栽试验,研究了不同浓度外源甜菜碱对作物的抗旱作用效果。结果表明:外源甜菜碱浓度为25～50mg/L时可促进小麦种子发芽,光合作用强度[达7.07～7.57μmol/(s·m^2)]及生物学产量增加;在外源甜菜碱浓度100 mg/L时小麦幼苗叶片硝酸还原酶活性最高,达到35.23μg/(g·h),同时小麦抗旱性增强。数学模式寻优结果表明:在外源甜菜碱浓度26.4～68.9mg/L,土壤水分含量12.6％～20.7％时,可获得最佳的茄子生物总量。
Experiments have been conducted to investigate the effects of exogenous betaine on drought resistance of wheat and eggplant. The results indicated that the germination percentage, photosynthesis intensity [being 7. 07-7. 57μmol/(s·m2)] and biomass production of wheat were increased when the concentration of exogenous betaine was between 25 mg/L and 50 mg/L. Activity of nitrate reductase in wheat leaves reached the maximum value 35. 23μg/(g·h), and the drought resistance of wheat could be enhanced when the concentration of exogenous betaine was 100 mg/L. In accordance with the results of mathematics simulation, the best biomass production of eggplant could appear when the concentration of exogenous betaine was 26. 4-68. 9 mg/L and the content of soil water was 12. 6%-20. 7%.
出处
《干旱地区农业研究》
CSCD
北大核心
2003年第2期86-90,共5页
Agricultural Research in the Arid Areas
基金
杨凌农业高新技术产业示范区科研专项基金(98A11)
