| 湿地松半同胞家系净光合速率的比较研究及季节变异规律 |
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| 引用本文： | 童方平,徐艳平,龙应忠,宋庆安,易霭琴,李 贵.湿地松半同胞家系净光合速率的比较研究及季节变异规律[J].中国农学通报,2008,24(7):419-424. |
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| 作者姓名： | 童方平 徐艳平 龙应忠 宋庆安 易霭琴 李 贵 |
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| 作者单位： | 1. 湖南省林业科学院,长沙,410004
2. 中南林业科技大学资源与环境学院,长沙,410004 |
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| 摘 要： | 为研究湿地松半同胞家系间净光合速率的差异及其季节变异规律，应用LI－6400便携式光合测定系统，对湿地松优良半同胞家系一年中各月净光合速率、最大净光合速率进行了研究，结果表明一年中湿地松各半同胞家系1龄针叶、2龄针叶净光合速率、最大净光合速率的季节变异规律呈‘双峰’型，家系内不同单株同龄针叶的净光合速率值没有显著差异，而家系间相同年龄针叶的净光合速率值则存在着显著差异。一年中1龄针叶以家系464、609、1077的净光合速率较高、普通种最低，其值分别为8.17、7.91、7.88和5.46μmol•m-2•s-1，而2龄针叶以家系1077、609、46的净光合速率较高、普通种最低，其值分别为5.47、5.42、5.37和3.65μmol•m-2•s-1。湿地松各家系1龄针叶的净光合速率值、最大净光合速率值显著高于2龄针叶的净光合速率值和最大净光合速率值。各家系1龄针叶的净光合速率值仅为最大净光合速率值的64.41%、2龄针叶的净光合速率值仅为最大净光合速率值的54.44%。表明湿地松高光效育种的改良潜力较大，通过合理利用和调整育林措施，可提高湿地松优良家系的生长量和产量。
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| 关 键 词： | 桔全爪螨 桔全爪螨 辛硫磷 抗药性 多功能氧化酶 |
| 收稿时间： | 5/5/2008 12:00:00 AM |
| 修稿时间： | 2008/5/19 0:00:00 |
Study on the Seasonal Variation and Difference on Net Photosynthetic Rate of Slash Pine' s Half-sib. |
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| Tong Fangping,Xu Yanping,Long Yingzhong,Song Qingan,Yi Aiqin,Li Gui.Study on the Seasonal Variation and Difference on Net Photosynthetic Rate of Slash Pine' s Half-sib.[J].Chinese Agricultural Science Bulletin,2008,24(7):419-424. |
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| Authors: | Tong Fangping Xu Yanping Long Yingzhong Song Qingan Yi Aiqin Li Gui |
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| Institution: | 1Hunan Forestry Academy, Changsha 410004; 2Institute of Resource and Environment, Central South University of Forestry and Technology, Changsha 410004
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| Abstract: | The net photosynthetic rate and maximum net photosynthetic rate of slash pine’s half-sib around 1 year is studied utilities of LI-6400 portable photosynthetic system so as to study on the seasonal variation and difference on net photosynthetic rate. The result showed that the seasonal variation of net photosynthetic rate and maximum net photosynthetic rate of slash pine’s half-sib is double range curve. There is no notable difference on net photosynthetic rate among needles with same half-sib. There is notable difference on net photosynthetic rate with same needles among half-sib. The net photosynthetic rate of 1 year needle of half-sib 464 and 609 and 1077 is over than others. The common variety is lowest. The net photosynthetic rate is step by 8.17μmol•m-2•s-1 and 7.91μmol•m-2•s-1 and 7.88μmol•m-2•s-1 and 5.46μmol•m-2•s-1.The net photosynthetic rate of 2 year needle of half-sib 1077 and 609 and 46 is over than others. The common variety is lowest. The net photosynthetic rate is step by 5.47μmol•m-2•s-1 and 5.42μmol•m-2•s-1 and 5.37μmol•m-2•s-1 and 3.65μmol•m-2•s-1.The net photosynthetic rate and maximum net photosynthetic rate of 1 year needle is over than 1 year needle’s. The net photosynthetic rate of 1 year needle decrease by 64.41% against maximum net photosynthetic rate 1 year needle. The net photosynthetic rate of 2 year needle decrease by 54.44% against maximum net photosynthetic rate 2 year needle. The potential of heredity and improvement is very high by breeding on light effective. It can increase growth and yield by adjusting cultivation method. |
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| Keywords: | model of nonlinear hyperbola net photosynthetic rate seasonal variation half-sib slash pine |
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