| 不同杉木无性系模拟胁迫下抗旱性综合评价 |
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| 引用本文： | 李树斌,丁国昌,曹光球,林思祖,郭伟志.不同杉木无性系模拟胁迫下抗旱性综合评价[J].福建农林大学学报(自然科学版),2012,41(5):491-496. |
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| 作者姓名： | 李树斌 丁国昌 曹光球 林思祖 郭伟志 |
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| 作者单位： | 1. 福建农林大学林学院,福建福州,350002
2. 福建农林大学林学院,福建福州350002;福建省杉木工程技术研究中心,福建福州350002 |
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| 基金项目： | 福建省自然科学基金资助项目，福建省科技厅重点资助项目 |
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| 摘 要： | 以10个杉木速生型无性系为材料,采用聚乙二醇(PEG)溶液培养法进行干旱胁迫模拟.测定结果表明:10个杉木无性系相对含水量和保水力呈先上升后下降趋势,且均低于对照;蒸腾速率均先急剧下降后不同程度上升,其中FS42蒸腾速率降幅最大,为52.18%;PSⅡ最大光化学效率Fv/Fm均持续降低,其中FS43降幅最小(为7.93%),FS38降幅最大(为18.40%).采用隶属函数法进行综合评价,结果表明10个杉木无性系的抗旱能力由大到小排列如下:FS43>FS41>FS39>FS40>FS37>FS35>FS42>FS36>FS34>FS38.
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| 关 键 词： | 杉木 无性系 干旱胁迫 隶属函数法 |
Drought resistance estimation of different Chinese fir clones under simulated water stress |
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| LI Shu-bin
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DING Guo-chang
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CAO Guang-qiu
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LIN Si-zu
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GUO Wei-zhi.Drought resistance estimation of different Chinese fir clones under simulated water stress[J].Journal of Fujian Agricultural and Forestry University,2012,41(5):491-496. |
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| Authors: | LI Shu-bin DING Guo-chang CAO Guang-qiu LIN Si-zu GUO Wei-zhi |
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| Institution: | 1(1.College of Forestry,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China; 2.Chinese Fir Engineering Research Center of Fujian,Fuzhou,Fujian 350002,China) |
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| Abstract: | The drought-resistance evaluation of 10 accessions of Chinese fir clones was studied by simulated drought stress with-2.0 MPa PEG-6000 solution.The results indicated that under water stress the water content of leaf and leaf water-holding ability increased at first and then decreased,and lower than control group(P<0.05);transpiration rate decreased sharply at first and then increased respectively,with FS42 maximum reduction of 52.18%;the maximal photochemical efficiency of PSⅡ(Fv/Fm) of 10 clones continued to decrease,with FS43 minimum reduction of 7.93% and FS38 maximum reduction of 18.40%.Based on complehensive evaluation of drought resistance,with subordinative function method,the drought-resistance sequence of 10 accessions of Chinese fir clones from high to low was as follows:FS43>FS41>FS39>FS40>FS37>FS35>FS42>FS36>FS34>FS38. |
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| Keywords: | Chinese fir clone drought resistance subordinative function method |
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