| 干旱胁迫对杉木无性系非结构性碳水化合物含量的影响 |
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| 引用本文： | 赖旭恩,胡德活,苏艳,张亦弛,郑会全.干旱胁迫对杉木无性系非结构性碳水化合物含量的影响[J].亚热带植物科学,2018,47(2):120-123. |
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| 作者姓名： | 赖旭恩 胡德活 苏艳 张亦弛 郑会全 |
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| 作者单位： | (1.乐昌市龙山林场，广东 乐昌 512221；2.广东省森林培育与保护利用重点实验室/广东省林业科学研究院，广东 广州 510520；3.华南农业大学，广东 广州 510642) |
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| 基金项目： | 林业公益性行业科研专项经费(201404127)；国家重点研发计划项目课题(2016YFD0600301) |
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| 摘 要： | 以杉木Cunninghamia lanceolata 6个优良无性系组培移栽苗为试材，对聚乙二醇(PEG-6000)模拟干旱胁迫条件下各无性系针叶淀粉、可溶性糖及非结构性碳水化合物(NSC)总量进行测定。结果显示，干旱胁迫致使杉木无性系针叶淀粉含量下降、可溶性糖含量有所提高，NSC含量呈下降趋势(除T-cF1无性系外)。干旱胁迫条件下，可溶性糖含量与针叶相对含水量、丙二醛含量间呈显著正相关(P<0.05)，而淀粉含量、NSC与过氧化氢酶活性间均为显著负相关(P<0.05)。
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| 关 键 词： | 杉木 干旱胁迫 非结构性碳水化合物 过氧化氢酶 |
| 收稿时间： | 2018-02-11 |
| 修稿时间： | 2018-03-16 |
Effect of Drought Stress on Non-Structural Carbohydrates in Cunninghamia lanceolata Clones |
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| LAI Xu-en,HU De-huo,SU Yan,ZHANG Yi-chi,ZHENG Hui-quan.Effect of Drought Stress on Non-Structural Carbohydrates in Cunninghamia lanceolata Clones[J].Subtropical Plant Science,2018,47(2):120-123. |
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| Authors: | LAI Xu-en HU De-huo SU Yan ZHANG Yi-chi ZHENG Hui-quan |
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| Institution: | (1.Longshan Forest Farm of Lechang, Lechang 512221, Guangdong China；2.Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization/Guangdong Academy of Forestry, Guangzhou 510520, Guangdong China; 3.South China Agricultural University, Guangzhou 510642, Guangdong China) |
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| Abstract: | This study aimed to quantify needle starch, soluble sugar content, and non-structural carbohydrates (NSC) of six Cunninghamia lanceolata clones under PEG-6000 simulated drought environment. The results showed that drought stress led to a reduction of the needle starch and an increase of soluble sugar content. All the clones tended to lower their non-structural carbohydrate concentrations in response to drought stress (except for T-cF1). Significant positive correlations (P<0.05) were found between soluble sugar and relative water content and malondialdehyde. While significant negative correlations (P<0.05) were observed for starch and NSC with catalase respectively. |
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| Keywords: | Chinese fir drought stress non-structural carbohydrates catalase |
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