| 低磷胁迫对晒红烟内源激素和根系活力的影响 |
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| 引用本文： | 符云鹏,杨 燕,薛剑波. 低磷胁迫对晒红烟内源激素和根系活力的影响[J]. 勤云标准版测试, 2005, 0(6) |
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| 作者姓名： | 符云鹏 杨 燕 薛剑波 |
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| 作者单位： | 国家烟草栽培生理生化研究基地 郑州450002(符云鹏,杨燕),国家烟草栽培生理生化研究基地 郑州450002(薛剑波) |
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| 基金项目： | 国家烟草专卖局资助项目723"湖南名晒烟深度研究与开发"(110200101003B). |
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| 摘 要： | 通过盆栽试验和室内分析,研究低磷胁迫对晒红烟内源激素和根系活力的影响。结果表明,低磷胁迫下晒红烟的根系活力活性降低,根冠比及根和叶中生长素(IAA)含量均增加,干物质积累和细胞分裂素(ZR)含量则减少。低磷胁迫下,烟株为适应胁迫环境,IAA/ZR比值增大,促进了根系发育,使根冠比增大,以提高对磷的吸收效率,用来满足烟株对磷素的需求。
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| 关 键 词： | 低磷胁迫 晒红烟 内源激素 根系活力 |
Influence under Low P-Deficient Stress on Endo Genous Hormone and Root Activities of Dark Sun-Cured Tobacco |
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| Fu Yunpeng,YangYan,Xue Jianpo. Influence under Low P-Deficient Stress on Endo Genous Hormone and Root Activities of Dark Sun-Cured Tobacco[J]. , 2005, 0(6) |
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| Authors: | Fu Yunpeng YangYan Xue Jianpo |
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| Abstract: | By using pot tests, the effect of low-P stress on dark sun-cured tobacco endogenous hormone and root activities were studied during different growth stage. The results showed that root activities were decreased, root/shoot ratio and IAA in the root and leaves were high, dry weight and ZR in the root and leaves were low. The high IAA/ZR under P stress promote the root growth, and root /shoot ratio increased. So it can take in more P from soil in to resist unfavorable environment conditions. |
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| Keywords: | Low P-deficient stress Dark sun-cured tobacco Endogenous hormone Root activities |
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