| 王方,马廷蕊,柳永强,梁慧光,李掌.半湿润区斑地锦入侵后马铃薯的光合响应[J].干旱地区农业研究,2011,29(5):59~62 |
| 半湿润区斑地锦入侵后马铃薯的光合响应 |
| Effect of Euphorbia supine Raf. invasion on potato PSⅡ fluorescence characteristics and absorbed light energy allocation |
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| DOI：10.7606/j.issn.1000-7601.2011.05.11 |
| 中文关键词: 马铃薯 斑地锦 胁迫 PSⅡ荧光 光能分配 |
| 英文关键词:potato Euphorbia maculata invasion PSⅡ chlorophyll fluorescence absorbed light energy allocation |
| 基金项目:甘肃农业科技创新专项(GSAS1005)；陇原青年创新人才扶持计划项目(GSYS08-A05) |
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| 中文摘要: |
| 试验以无斑地锦入侵条件为对照，研究半湿润区斑地锦入侵对马铃薯叶片光合色素含量、PSⅡ荧光特性和吸收光能分配的影响。结果表明，斑地锦入侵后，马铃薯叶片5-氨基乙酰丙酸、叶绿素a、叶绿素b、类胡萝卜素、PSⅡ原初光能转化效率Fv/Fm、PSⅡ有效光化学量子产率Fv'/Fm'、光化学量子效率ΦPSⅡ、表观光合电子传递速率ETR、光化学荧光猝灭qP和光化学反应百分率Pc在各生育期都有不同程度降低，非光化学荧光猝灭NPQ和天然热耗散百分率Hd升高，非光化学耗散百分率Ex变化不大；斑地锦胁迫对马铃薯叶片叶绿素特性、PSⅡ叶绿素荧光活动和吸收光能分配的影响与马铃薯生育期有关，随生育期推后，影响加大，斑地锦胁迫并没有破坏PSⅡ荧光随生育期的变化规律。 |
| 英文摘要: |
| By control with the normal conditions, an experiment was carried out to study the influence of Euphorbia maculata invasion on potato leaves' photosynthestic pigment content, PSⅡ fluorescence characteristics and absorbed light energy allocation. The results show that Euphorbia maculata invasion decreases potato leaves' ALA content, chlorophyll-a content, chlorophyll-b content, Fv/Fm, Fv'/Fm', ΦPSⅡ, ETR, qP and Pc on different extent, but increases NPQ and Hd，while changes little Ex at different growth stages. The influence of Euphorbia maculata invasion on potato leaves' chlorophyll characteristics, PSⅡ chlorophyll fluorescence activity and absorbed light energy allocation is relevant with potato's growth stage, and the influence range increases with the push of growth stage. Euphorbia maculata invasion does not break the law that the PSⅡ fluorescence varies with the change of growth stages. |
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