作　　者： ; ; ; ;

机构地区： 乐昌市龙山林场广东乐昌512221

出　　处： 《亚热带植物科学》 2018年第2期120-123,共4页

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-c F1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)。 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-c F1）. 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.

关 键 词： 杉木 干旱胁迫 非结构性碳水化合物 过氧化氢酶

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