| 干旱胁迫对2个欧李种源生理特征的影响 |
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| 引用本文： | 姜英淑,陈书明,王秋玉,卢宝明. 干旱胁迫对2个欧李种源生理特征的影响[J]. 林业科学, 2009, 45(6) |
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| 作者姓名： | 姜英淑 陈书明 王秋玉 卢宝明 |
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| 作者单位： | 东北林业大学,哈尔滨,150040;北京市林业种子苗木管理总站,北京,100029;三门峡职业技术学院,三门峡,472000;东北林业大学,哈尔滨,150040;北京市林业种子苗木管理总站,北京,100029 |
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| 基金项目： | 国家林业局重点科技项目 |
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| 摘 要： | 以喇叭沟门和怀柔-汤河口2个种源的欧李盆栽苗木为研究对象,测定自然干旱胁迫期间和复水后的各种生理指标变化.结果表明:随干旱胁迫时间延长,2个种源的叶绿素含量、类胡萝卜素含量、MDA含量和SOD活性等指标均发生了明显变化,但除了怀柔-汤河口种源的叶绿素含量和喇叭沟门种源的POD活性与对照存在极显著差异外(P＜0.01),其他指标与对照均无显著差异(α=0.05);喇叭沟门种源的电解质外渗率和MDA在处理的第32天出现一个峰值,而怀柔-汤河口种源电解质外渗率在处理前期缓慢上升,然后稳定一段时间后下降.MDA含量在处理的第44天出现峰值;不论是叶绿索还是类胡萝卜素含量,喇叭沟门种源都是在前14天急剧上升,然后下降到起始点,而怀柔-汤河口种源在处理前期迅速上升,然后在高位浮动,直至处理结束;2个种源的POD活性均随着胁迫时间的延长逐渐上升,胁迫末期达到最大值,但怀柔-汤河口种源的POD整体活性水平远远高于喇叭沟门种源;2个种源SOD活性的最大值均在0.8 U·mg-1 min-1左右,但喇叭沟门种源出现在胁迫的第32天,而怀柔-汤河口种源出现在胁迫的第14天,然后下降直到胁迫结束.与喇叭沟门种源相比,怀柔-汤河口种源面对短时间的水分胁迫可能具有更强的耐旱性.
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| 关 键 词： | 欧李 干旱胁迫 生理指标 |
Effects of the Drought Stress on Physiological Characteristics of Two Cerasus humilis Provenances |
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| Jiang Yingshu,Chen Shuming,Wang Qiuyu,Lu Baoming. Effects of the Drought Stress on Physiological Characteristics of Two Cerasus humilis Provenances[J]. Scientia Silvae Sinicae, 2009, 45(6) |
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| Authors: | Jiang Yingshu Chen Shuming Wang Qiuyu Lu Baoming |
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| Affiliation: | Jiang Yingshu 1,2 Chen Shuming3 Wang Qiuyu1 Lu Baoming2(1.Northeast Forestry University Harbin 150040,2.Forest Seed and Seedling Center of Beijing Beijing 100029,3.Sanmenxia Profesional Technique Institute Sanmenxia 472000) |
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| Abstract: | In this paper,the seedlings from two provenances,Labagoumen and Huairou-tanghekou of Cerasus humilises,were used to investigate their responses to drought stress.Several physiological characteristics were measured during the 50 days drought stress.The results showed that the chlorophyll,carotenoid and MDA content,POD and SOD activity of two provenances all changed during the stress.There were no significant difference between the stress treatment and the control in most of the parameters except for chloroph... |
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| Keywords: | Cerasus humilis drought stress physiological index |
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