| 孙耀中,东方阳.旱作转甜菜碱醛脱氢酶基因水稻开花后根系衰老生理特性研究[J].干旱地区农业研究,2007,(4):221~224 |
| 旱作转甜菜碱醛脱氢酶基因水稻开花后根系衰老生理特性研究 |
| The study on physiological characteristics of root system in transgenic(BADH) rice under dry cultivation |
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| DOI：10.7606/j.issn.1000-7601.2007.04.43 |
| 中文关键词: 水稻；转BADH基因 旱作；根系；生理特性 |
| 英文关键词:rice transgenic rice dry cultivation root system physiological characteristic |
| 基金项目:河北省教育厅项目 |
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| 摘要点击次数: 339 |
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| 中文摘要: |
| 采用田间试验与盆栽试验相结合的方法，研究了旱作条件下转甜菜碱醛脱氢酶（BADH）基因水稻开花后根系生理特性的变化。结果表明：在旱作条件下，转BADH基因水稻开花后根系能保持较高的SOD、POD活性；膜脂过氧化产物MDA含量较低；可溶性糖含量较高；在干旱胁迫下根系活力高于受体亲本（中花8号），表明转BADH基因水稻生育后期能够有效地调节根系细胞的渗透势，减少有害离子对根系的伤害，从而延缓根系衰老，使根系在产量形成期维持较强的生理活性。 |
| 英文摘要: |
| Experiment was conducted in combining the field cultivation and the indoor cultivation in a pot method to study the physiological characteristics of root system in transgenic(BADH) rice after flowering. The result indicated that the transgenic rice has obvious advantages under dry cultivation, and can keep higher SOD and POD activation, while malondialdehyde(MDA) content declines; the high soluble sugar content can adjust the whole cell osmotic potential of cell and reduce the injury to the root system of harmful ion; the root activity in transgenic rice after flowering by water stress is higher than its parents Zhonghua8, which proved that transgenic(BADH) rice can slow down the aging of the root system. These characteristics might be helpful for the maintenance of root physiological activity during the graining filling period of varieties of transgenic(BADH) rice genotype——52-7. |
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