| 张建新,徐福利,吕家珑,李亚兰,李东.外源甜菜碱对作物的抗旱作用效果研究[J].干旱地区农业研究,2003,(2):86~90 |
| 外源甜菜碱对作物的抗旱作用效果研究 |
| Effect of exogenous betaine on drought resistance of different crops |
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| DOI：10.7606/j.issn.1000-7601.2003.02.20 |
| 中文关键词: 外源甜菜碱 小麦 茄子 硝酸还原酶 土壤水分 |
| 英文关键词:exogenous betaine wheat eggplant nitrate reductase soil water |
| 基金项目:杨凌农业高新技术产业示范区科研专项基金(98A11) |
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| 中文摘要: |
| 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\[达7.07～7.57μmol/（s·m2）\]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。 |
| 英文摘要: |
| 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%. |
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