| PEG渗透胁迫对甘薯光合作用的影响 |
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| 引用本文： | 李扬,孙存华,贺鸿雁,周忠,马代夫.PEG渗透胁迫对甘薯光合作用的影响[J].河南农业科学,2005(6):37-39. |
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| 作者姓名： | 李扬 孙存华 贺鸿雁 周忠 马代夫 |
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| 作者单位： | 1. 徐州师范大学生命科学学院,江苏,徐州221116
2. 徐州甘薯研究中心,江苏,徐州221121 |
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| 摘 要： | 采用PEG渗透胁迫方法研究了遗30 6、渝薯8号、Ayamurasaki 3个甘薯品种的光合作用变化。结果表明,渗透胁迫下3个甘薯品种叶片净光合速率(Pn)、蒸腾速率(Tr)和气孔导度(Cond)下降,并随胁迫时间的延长而加剧。3个品种间有显著不同,其中,Ayamurasaki的净光合速率、蒸腾速率和气孔导度随胁迫持续下降最小,说明Ayamurasaki耐旱性强于另外2个品种。
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| 关 键 词： | 渗透胁迫 甘薯 净光合速率 气孔导度 |
| 文章编号： | 1004-3268(2005)06-0037-03 |
| 修稿时间： | 2004年10月28 |
Effects of PEG Osmotic Stress on Leaf Photosynthesis of Sweet Potato |
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| LI Yang,SUN Cun-hua,HE Hong-Yan,Zhou Zhong,MA Dai-fu.Effects of PEG Osmotic Stress on Leaf Photosynthesis of Sweet Potato[J].Journal of Henan Agricultural Sciences,2005(6):37-39. |
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| Authors: | LI Yang SUN Cun-hua HE Hong-Yan Zhou Zhong MA Dai-fu |
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| Institution: | LI Yang 1, SUN Cun-hua 1, HE Hong-yan 1 , ZHOU Zhong 1 , MA Dai-fu 2 |
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| Abstract: | Studies on leaf photosynthesis of 3 sweet potato varieties (Yi 306,Yushu and Ayamurasaki) by using PEG osmotic stress.Showed that under osmotic stress,photosynthetic rate, transpiration rate and stomatal conductance of 3 varieties decreased and aggravated with the time of osmotic stress. But there was a distinct difference between 3 varieties, in which,the decreasing extent of photosynthetic rate, transpiration rate and stomatal conductance of Ayamurasaki was the least. Suggesting that Ayamurasaki has more drought-resistance than other two varieties. |
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| Keywords: | Osmotic stress Sweet potato Photosynthetic rate Stomatal conductance |
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