| 低温胁迫对不同种源蒙古莸叶绿素荧光特性的影响 |
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| 引用本文： | 曲乘民,叶冬梅,何炎红,白玉娥,林涛. 低温胁迫对不同种源蒙古莸叶绿素荧光特性的影响[J]. 西部林业科学, 2021, 0(2): 84-92 |
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| 作者姓名： | 曲乘民 叶冬梅 何炎红 白玉娥 林涛 |
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| 作者单位： | 内蒙古农业大学林学院 |
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| 基金项目： | 内蒙古自治区科技计划项目“蒙古莸种质资源收集评价与繁育技术的研究”(201802109)。 |
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| 摘 要： | 以4个种源(BLG、XS、LJD、JB)的蒙古莸种子培育出的实生苗为试材,对其进行不同温度的处理(3、7、11、15℃),探究不同低温胁迫条件下各种源蒙古莸在不同光强度下叶绿素荧光参数变化规律,旨在阐明其对光照环境条件变化的适应.结果表明:低温胁迫导致其PSⅡ反应中心功能下降,更易失活,对光合器官造成伤害;蒙古莸主要通...
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| 关 键 词： | 蒙古莸 叶绿素荧光参数 低温胁迫 种源 |
Effect of Low Temperature Stress on Chlorophyll Fluorescence Characteristics of Different Provenances of Caryopteris mongolica |
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| QU Cheng-min,YE Dong-mei,HE Yan-hong,BAI Yu-e,LIN Tao. Effect of Low Temperature Stress on Chlorophyll Fluorescence Characteristics of Different Provenances of Caryopteris mongolica[J]. Journal of West China Forestry Science, 2021, 0(2): 84-92 |
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| Authors: | QU Cheng-min YE Dong-mei HE Yan-hong BAI Yu-e LIN Tao |
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| Affiliation: | (College of Forestry,Inner Mongolia Agricultural University,Hohhot Inner Mongolia 010020,P.R.China) |
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| Abstract: | In this study,the seedlings cultivated from four provenances(BLG,XS,LJD,JB)were used as test materials.By treating these seedlings at different temperatures(3℃,7℃,11℃,15℃),the changes of chlorophyll fluorescence parameters under different light intensities of various sources were analyzed for understanding their capacity of adaptation to the changes of light environmental conditions.The results showed that the low temperature stress led to the decrease of the PSⅡreaction center function,easier deactivation,harm the photosynthetic organs.The harm of photo-inhibition was mitigated by reducing the efficiency of light capture,the actual photo-chemical efficiency(Yield)and the accumulation of excess light energy reduced by lowering the electron transfer rate(ETR).LJD has the worst ability to defend against light damage. |
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| Keywords: | Caryopteris mongolica chlorophyll fluorescence parameters low temperature stress provenance |
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