| 镉胁迫对黑杨派无性系生理生化特性及生长的影响 |
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| 引用本文： | 姚俊修,陈甘牛,李善文,乔艳辉,仲伟国,李庆华,董玉峰,吴德军.镉胁迫对黑杨派无性系生理生化特性及生长的影响[J].北京林业大学学报,2020,42(4):12-20. |
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| 作者姓名： | 姚俊修 陈甘牛 李善文 乔艳辉 仲伟国 李庆华 董玉峰 吴德军 |
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| 作者单位： | 1.山东省林业科学研究院，山东省林木遗传改良重点实验室，山东 济南 250014 |
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| 基金项目： | 山东省重点研发计划项目（2017GNC11115），林业科技发展项目（KJZXZZ2019015） |
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| 摘 要： | 【目的】为研究重金属Cd对林木生理生化特性的影响,探讨林木对Cd胁迫的响应机制,为日渐严重的土壤重金属污染治理提供依据。【方法】对黑杨派的5个无性系进行沙培试验,测定其地径和苗高生长量及8个生理生化指标,评价不同无性系抗Cd2+胁迫的能力。【结果】镉胁迫导致无性系的CAT及MDA含量较CK呈先增加后减少的趋势;POD和SOD活性较CK也呈先增大后减小的变化趋势,其中L35、鲁林9号、鲁林16号的POD活性始终排在前3位;随着镉处理浓度的增加,无性系L35、I-107和中菏1号的脯氨酸及可溶性糖含量较CK均呈现逐渐上升趋势,而叶绿素含量均呈先增加后减少的趋势,L35、I-107和中菏1号的叶绿素含量始终排在前3位。各无性系的地径和苗高在Cd胁迫下存在差异,苗高达到显著水平,而地径未达到显著水平,表明参试无性系苗高性状较地径对Cd的胁迫更为敏感。【结论】利用主成分分析对5个无性系生长量及生理生化指标进行综合评价,L35、中菏1号和I-107的抗重金属Cd能力较强,可作为修复重金属镉污染土壤的理想无性系。
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| 关 键 词： | 黑杨派 无性系 生理生化特性 生长量 镉胁迫 |
| 收稿时间： | 2019-12-11 |
Physiological and biochemical properties and growth of Aigeiros clones under cadmium stress |
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| Yao Junxiu,Chen Ganniu,Li Shanwen,Qiao Yanhui,Zhong Weiguo,Li Qinghua,Dong Yufeng,Wu Dejun.Physiological and biochemical properties and growth of Aigeiros clones under cadmium stress[J].Journal of Beijing Forestry University,2020,42(4):12-20. |
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| Authors: | Yao Junxiu Chen Ganniu Li Shanwen Qiao Yanhui Zhong Weiguo Li Qinghua Dong Yufeng Wu Dejun |
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| Institution: | 1.Shandong Academy of Forestry, Key Laboratory for Genetics and Breeding in Forest of Shandong Province, Jinan 250014, Shandong, China2.Yantai Institute of Forestry, Yantai 264000, Shandong, China |
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| Abstract: | ObjectiveIn order to study the effects of heavy metal stress on physiological and biochemical properties of trees, the response mechanism of trees to Cd stress was discussed to provide a theoretical basis for the increasingly serious soil heavy metal pollution problem.MethodSand culture experiments were carried out on five Aigeiros clones, ground diameter, seedling height and 8 physiological and biochemical indexes were measured to evaluate the resistance of different clones to Cd stress.ResultThe content of CAT and MDA of Aigeiros clones increased first and then decreased under Cd stress compared with control. POD and SOD activities also increased first and then decreased compared with control. The POD activities of ‘L35’, ‘Lulin 9’ and ‘Lulin 16’ were always in the top three. With the increase of Cd2+ concentration, the proline and soluble sugar contents of ‘L35’, ‘I-107’ and ‘Zhonghe 1’ increased gradually, while the chlorophyll contents increased first and then decreased. The chlorophyll contents of ‘L35’, ‘I-107’ and ‘Zhonghe 1’ were always in the top three.There were differences in ground diameter and seedling height among clones under the Cd stress, the seedling height reached a significant level, while the ground diameter did not reach a significant level, which indicated that the seedling height traits of the tested clones were more sensitive to Cd stress than the ground diameter.ConclusionThe growth and physiological and biochemical properties of five clones were comprehensively evaluated by principal component analysis, ‘L35’, ‘Zhonghe 1’ and ‘I-107’ had strong resistance to Cd stress, which could be used as ideal clones for remediation of cadmium-contaminated soils. |
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| Keywords: | Aigeiros clone physiological and biochemical property growth cadmium stress |
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