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| PEG6000模拟水分胁迫对杉木家系苗木生理生化指标的 影响 |
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刘伟新,王润辉,郑会全,胡德活,韦如萍,晏 姝,梁瑞友
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韶关市曲江区国营小坑林场 广东韶关,广东省森林培育与保护利用重点实验室,广东省森林培育与保护利用重点实验室,广东省森林培育与保护利用重点实验室,广东省森林培育与保护利用重点实验室,广东省森林培育与保护利用重点实验室,韶关市曲江区国营小坑林场 广东韶关
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| 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： |
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| 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 |
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Liu Weixin,Wang Runhui,Zheng Huiquan,Hu Dehuo,Wei Ruping,Yan Shu and Liang Ruiyou
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Xiaokeng forest farm,Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization,Guangdong Academy of Forestry,Guangzhou,Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization,Guangdong Academy of Forestry,Guangzhou,Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization,Guangdong Academy of Forestry,Guangzhou,Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization,Guangdong Academy of Forestry,Guangzhou,Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization,Guangdong Academy of Forestry,Guangzhou,Xiaokeng forest farm
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| 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 |
