| 机械损伤及埋土深度对杉木萌蘖及抗氧化酶活性的影响 |
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| 引用本文： | 张吉玲,陈钢,曹光球,林思祖,郑宏,李勇.机械损伤及埋土深度对杉木萌蘖及抗氧化酶活性的影响[J].浙江农林大学学报,2021,38(2):304-310. |
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| 作者姓名： | 张吉玲 陈钢 曹光球 林思祖 郑宏 李勇 |
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| 作者单位： | 1.福建农林大学 林学院，福建 福州 3500022.福建农林大学 国家林业草原杉木工程技术研究中心，福建 福州 3500023.福建省洋口国有林场，福建 顺昌 353200 |
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| 基金项目： | “十三五”国家重点研发计划资助项目(2016YFD0600301)。 |
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| 摘 要： | 目的 研究分析机械损伤处理下杉木Cunninghamia lanceolata无性系萌蘖能力与抗氧化酶活性的相关关系，从酶活性代谢生理角度阐述杉木萌蘖机制，为解决杉木无性系萌蘖问题提供理论依据。 方法 以杉木无性系洋020的1年生扦插苗为材料，通过盆栽试验，设置去顶和未去顶处理，0、3、6 cm埋土深度处理，在萌蘖初期、中期、后期分别取样，观测无性系萌蘖状况，通过酶活吸光度方法测定杉木无性系萌蘖过程中枝叶、基部韧皮部、根尖等不同器官超氧化物歧化酶(SOD)、过氧化氢酶(CAT)和过氧化物酶(POD)活性差异，并进行相关性分析。 结果 随着埋土深度的增加，去顶和未去顶不同埋土深度杉木无性系苗萌蘖能力均呈降低的趋势，且不同埋土深度处理会影响植物的抗氧化酶的活性。随着埋土深度的增加，杉木幼苗枝叶SOD活性呈上升趋势，CAT活性呈下降趋势；埋土6 cm处理有利于增强枝叶及根尖POD的活性。 结论 机械损伤和不同埋土深度对杉木无性萌蘖有一定的影响；同一埋土深度，去顶处理杉木无性系的萌蘖能力高于未去顶处理。不同器官植物抗氧化酶活性是影响杉木无性系机械损伤和不同埋土深度处理萌蘖的主要影响因子之一。图3表3参18
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| 关 键 词： | 杉木 机械损伤 萌蘖 抗氧化酶 |
| 收稿时间： | 2020-05-13 |
Effects of mechanical damage and deep soil treatment on sprouting and antioxidant enzyme activities of Cunninghamia lanceolata |
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| ZHANG Jiling,CHEN Gang,CAO Guangqiu,LIN Sizu,ZHENG Hong,LI Yong.Effects of mechanical damage and deep soil treatment on sprouting and antioxidant enzyme activities of Cunninghamia lanceolata[J].Journal of Zhejiang A&F University,2021,38(2):304-310. |
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| Authors: | ZHANG Jiling CHEN Gang CAO Guangqiu LIN Sizu ZHENG Hong LI Yong |
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| Institution: | 1.College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China2.China Fir Engineering Research Center, State Forestry and Grassland Administration, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China3.Yangkou State-owned Forest Farm, Shunchang 353200, Fujian, China |
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| Abstract: | Objective]With an analysis conducted of the relationship between the sprouting ability of Cunninghamia lanceolata(Chinese fir)clones and the activity of antioxidant enzymes under the treatment of mechanical injure as well as an elaboration on the sprouting mechanism of C.lanceolata from the metabolic physiology of enzyme activity,this study is aimed to provide theoretical basis for solving the sprouting problem of C.lanceolata clones.Method]Using the 1-year-old cuttings of Chinese fir Clone Yang 020 as experimental materials,with pot experiment and treatments of topping removal and no topping set at depths of0,3 and 6 centimeters,the enzyme activity absorbance test was carried out to measure and analyze the activities of superoxide dismutase(SOD),catalase(CAT)and peroxidase(POD)in different organs,such as branches and leaves,basal phloem and root tip.Result](1)With the increase of soil depth,the tillering capacity of seedlings of Chinese fir clones with and without mechanical damage at different soil depths decreased,and treatments of different soil depths could affect the activity of antioxidant enzymes.(2)With the increase of soil depth,SOD activity of branches and leaves of Chinses fir seedlings increased,while CAT activity decreased.(3)The soil depth of 6 centimeters was conducive to pod accumulation of branches and leaves and root tips.Conclusion]In conclusion,the mechanical damage and treatments of different soil depths had impact on the clonal tillering of Chinese fir.Of the same soil depth,the tillering of Chinese fir with the removal of topping is higher than the one without the removal.Also,the antioxidant enzyme activity of different organs plants was one of the main factors that affect the mechanical damage of C.lanceolata clones and the tillering of treatments of different soil depths. |
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| Keywords: | Cunninghamia lanceolata mechanical damage sprouting antioxidant enzyme |
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