| 萘乙酸对短穗鱼尾葵耐寒性的影响 |
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| 引用本文： | 阮志平.萘乙酸对短穗鱼尾葵耐寒性的影响[J].西北林学院学报,2012,27(3):39-43. |
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| 作者姓名： | 阮志平 |
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| 作者单位： | 厦门市园林植物园,福建厦门,361003 |
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| 基金项目： | 厦门市科技计划项目(3502Z20092019) |
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| 摘 要： | 为研究不同浓度萘乙酸(NAA)溶液对短穗鱼尾葵(Caryota mitis)幼苗耐寒性的影响,用0、25、50mg·L-1和100mg·L-1 4种浓度的NAA溶液喷施短穗鱼尾葵叶片。分别经过25、5℃和25℃各24h变温冷胁迫处理后,研究短穗鱼尾葵叶片在变温冷胁迫过程中的超氧化物歧化酶(SOD)、过氧化物酶(POD)、丙二醛(MDA)、游离脯氨酸(f-pro)、可溶性蛋白和叶绿素生理指标的动态变化规律,并对25℃恢复24h后的短穗鱼尾葵幼苗上述耐寒指标采用隶属函数法综合评价,结果表明,4种浓度下隶属函数值分别是0.35、0.67、0.53和0.29,其中25mg·L-1的NAA溶液喷施处理对提高短穗鱼尾葵的耐寒性效果最好。
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| 关 键 词： | 综合评价 萘乙酸 短穗鱼尾葵 生理指标 耐寒性 |
Comprehensive Evaluation of NAA on Caryota mitis Cold Tolerance |
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| RUAN Zhi-ping.Comprehensive Evaluation of NAA on Caryota mitis Cold Tolerance[J].Journal of Northwest Forestry University,2012,27(3):39-43. |
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| Authors: | RUAN Zhi-ping |
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| Institution: | RUAN Zhi-ping(Xiamen Botanical Garden,Xiamen,Fujian 361003,China) |
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| Abstract: | In order to understand the effects of naphthalene acetic acid(NAA) on the cold tolerance of Caryota mitis seedlings.Solutions of NAA with the concentrations of 0,25,50 and 100 mg·L-1 were sprayed on the foliage of C.mitis seedings.Physiological indices,including activities of superoxide dismutase(SOD) and peroxidase(POD) as well as the contents of malondialdehyde(MDA),free proline(f-pro),soluble protein,chlorophylls were measured in the seedlings treated by the temperatures of-25℃,5℃,and 25℃.It was indicated that all the above-mentioned physiological indices varied with different concentrations of NAA.Subordinate function value for different concentrations of NAA at 25℃ were 0.35 for 0 mg·L-1,0.67 for 25 mg·L-1,0.53 for 50 mg·L-1,and 0.29 for 100 mg·L-1.It was concluded that leaves sprayed with different concentrations of NAA could affect the cold tolerance of C.mitis seedlings.The optimal concentration of NAA was 25 mg·L-1. |
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| Keywords: | comprehensive evaluation NAA Caryota mitis physiological indices cold tolerance |
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