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| 不同种源花楸幼苗气体交换特性 | |
| 引用本文： | 任军,李利军,林玉梅,李绍臣,范丽颖,刘默犁. 不同种源花楸幼苗气体交换特性[J]. 东北林业大学学报, 2009, 37(7) |
| 作者姓名： | 任军 李利军 林玉梅 李绍臣 范丽颖 刘默犁 |
| 作者单位： | 1. 吉林省林业科学研究院,长春,130033 2. 长春理工大学 3. 东北林业大学 |
| 基金项目： | 国家"十一五"科技支撑项目，国家林业局重点项目 |
| 摘 要： | 以吉林通化、长白、白河、汪清和黑龙江带岭、海林、牡丹江7种源的花楸幼苗为材料,对其叶片净光合速率、蒸腾速率、气孔导度和胞间CO2体积分数进行了测定.结果表明:各种源花楸净光合速率和蒸腾速率日变化均为单峰曲线,净光合速率峰值在12:00-14:00,蒸腾速率峰值则出现在12:00,气孔导度为"一峰一谷"曲线,而胞间CO2体积分数为"双谷"曲线;种源能够显著地影响花楸的气体交换参数.牡丹江和汪清种源光合作用比较强,气孔导度和胞间CO2体积分数较低;各气体交换特性与环境因子都有一定相关性,其中,净光合速率主要受光合有效辐射影响,蒸腾速率主要与气温和叶温有关,气孔导度与空气湿度相关性最高,胞间CO2体积分数则对空气CO2体积分数的变化最为敏感. |
| 关 键 词： | 花楸幼苗 种源 气体交换 |
Characteristics of Gas Exchanges of Sorbus pohuashanensis Seedlings from Different Provenances |
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| Ren Jun,Li Lijun,Lin Yumei,Li Shaochen,Fan Liying,Liu Moli. Characteristics of Gas Exchanges of Sorbus pohuashanensis Seedlings from Different Provenances[J]. Journal of Northeast Forestry University, 2009, 37(7) | |
| Authors: | Ren Jun Li Lijun Lin Yumei Li Shaochen Fan Liying Liu Moli |
| Affiliation: | Ren Jun,Li Lijun,Lin Yumei,Li Shaochen(Jilin Provincial Academy of Forestry Sciences,Changchun 130033,P. R. China),Fan Liying(Changchun University of Science , Technology),Liu Moli(Northeast Forestry University) |
| Abstract: | Net photosynthetic rate,transpiration rate,stomatal conductance,and intercellular CO2 concentration of Sorbus pohuashanensis seedlings from Tonghua,Changbai,Baihe,Wangqing,Dailing,Hailin and Mudanjiang were investigated. Results showed that the diurnal variation of net photosynthetic rate and transpiration rate could be described by a unimodal curve,and the peak value of net photosynthetic rates was between 12:00 and 14:00 and that of transpiration rates was at 12:00. The diurnal variation of stomatal condu... |
| Keywords: | Sorbus pohuashanensis Provenances Gas exchanges |
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