| 摘要: |
| 为满足粤北地区对不同杉木（Cunninghamia lanceolata）优良品系的需求，选育适应干旱条
件的杉木家系，试验选择了当前在生产上应用较广的28 个杉木家系，进行PEG6000 模拟水分胁迫处
理。结果显示，不同家系、不同处理间的含水率和SOD 酶活性差异达极显著水平，其中家系604、742、
763、779 等在干旱胁迫条件下，有较高的SOD、POD 和CAT 酶活性。相关性分析表明，含水率和SOD、
POD、CAT 3 个酶活性没有明显的相关性特征。采用隶属函数值法进行抗旱性综合评价，家系779、604、
742、770 和763 位列前五，为抗旱性较好的一批家系。 |
| 关键词: 杉木 相对含水率 SOD POD CAT |
| DOI： |
| 投稿时间：2017-12-18修订日期：2018-02-07 |
| 基金项目:广东省科技厅公益研究与能力建设项目(2016B020201002),林业公益性行业科研专项经费项目(201404127)共同资助。 |
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| The Effect of PEG-6000 Simulated Drought Stress on the Physiological and Biochemistry Indexes in Cunninghamia lanceolata Family |
| Liu Weixin,Wang Runhui,Zheng Huiquan,Hu Dehuo,Wei Ruping,Yan Shu,Liang Ruiyou |
| (Xiaokeng forest farm;Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization,Guangdong Academy of Forestry,Guangzhou) |
| Abstract: |
| Twenty-eight Cunninghamia lanceolata families were subjected to PEG-6000 simulated drought
stress treatment assay for the selection of drought-tolerance germplasm that were suitable for use in northern
Guangdong. The results showed that there have significant differences (P<0.01) of the relative water content and
SOD activity among families. Family 604, 742, 763 and 779 had relative high SOD, POD and CAT activity under
drought condition. No significant correlations (P>0.05) were observed among relative water content and SOD,
POD, CAT activities. According to the subordinate function values, a sequenced drought-tolerant family including
604, 742, 763,770, 779 was identified. |
| Key words: Cunninghamia lanceolata relative water content SOD POD CAT |
