亚热带植物科学 ›› 2018, Vol. 47 ›› Issue (02): 120-123.DOI: 10.3969/j.issn.1009-7791.2018.02.005

• 植物生理生化与分子生物学 • 上一篇    下一篇

干旱胁迫对杉木无性系非结构性碳水化合物含量的影响

赖旭恩,胡德活,苏艳,张亦弛,郑会全   

  1. (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)
  • 收稿日期:2018-02-11 修回日期:2018-03-16 出版日期:2018-06-30 发布日期:2018-06-30
  • 通讯作者: 郑会全
  • 作者简介:赖旭恩,大专,工程师,从事杉木良种选育与生理生态研究。
  • 基金资助:
    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)

Effect of Drought Stress on Non-Structural Carbohydrates in Cunninghamia lanceolata Clones

LAI Xu-en, HU De-huo, SU Yan, ZHANG Yi-chi, ZHENG Hui-quan   

  1. (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)
  • Received:2018-02-11 Revised:2018-03-16 Online:2018-06-30 Published:2018-06-30
  • Contact: ZHENG Hui-quan

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)。

关键词: 杉木, 干旱胁迫, 非结构性碳水化合物, 过氧化氢酶

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.

Key words: Chinese fir, drought stress, non-structural carbohydrates, catalase

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