| 泡桐耐旱性与膜脂肪酸饱和度关系的研究 |
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| 引用本文： | 宋露露,熊耀国,赵丹宁.泡桐耐旱性与膜脂肪酸饱和度关系的研究[J].林业科学研究,1997,10(3):316-320. |
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| 作者姓名： | 宋露露 熊耀国 赵丹宁 |
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| 作者单位： | 中国林业科学研究院林业研究所 |
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| 摘 要： | 泡桐属树木在土壤水分胁迫下，复水可以降低膜脂肪酸饱和度，土壤水势从－２．０×１０５Ｐａ提高到－５．０×１０４Ｐａ，使叶片膜脂肪酸饱和度降低了２．０４％。敏感品种（南方泡桐，台湾泡桐）脂肪酸饱和度比耐旱品种（兰考泡桐，楸叶泡桐）低７．７４％，且油酸和硬脂酸含量存在较大差异。脂肪酸饱和度（ＤＳＦＡ）与叶片持水力成正相关，与电解质外渗率和水分饱和亏缺成负相关
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| 关 键 词： | 泡桐 耐旱性 膜脂肪酸 脂肪酸饱和度 |
| 收稿时间： | 1996/7/22 0:00:00 |
Study on the Relationship between Degree of Salurated Fatty Acid in Cell Membrane and Drought Resistant of Paulownia |
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| Song Lulu,Xiong Yaoguo and Zhao Danning.Study on the Relationship between Degree of Salurated Fatty Acid in Cell Membrane and Drought Resistant of Paulownia[J].Forest Research,1997,10(3):316-320. |
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| Authors: | Song Lulu Xiong Yaoguo and Zhao Danning |
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| Institution: | Song Lulu Xiong Yaoguo Zhao Danning |
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| Abstract: | Fatty acid components in cell membrane in paulownia mainly include:palmitic acid, linoleic acid, flax acid(about 87% of total fatty acid) and some palmmoleic acid, stearic acid and oleic acid. DSFA was decreased by watering when there is light water stress in soil.And the DSFA is decreased by 2.04% when soil potential increased from -2.0 bar to -0.5 bar.The DSFA difference existed in the membrane between sensitive species and drought resistant species, and there is a slight difference in content of stearic acid and oil acid. DSFA is positively related with Mrc, and nagativly with SDW and Pm. |
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| Keywords: | paulownia drought resistent fatty acid in cell membrane degree of saturated fatty acid |
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