| 吴刘萍1，许衍才2，廖飞雄3，王代容4.杜鹃红山茶叶片叶绿素荧光对干旱胁迫及复水处理的响应[J].广东农业科学,2017,44(10):25-31 |
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杜鹃红山茶叶片叶绿素荧光对干旱胁迫及复水处理的响应 |
| Response of chlorophyll fluorescence of Camellia changii leaves to drought stress and rehydration |
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| DOI：10.16768/j.issn.1004-874X.2017.10.005 |
| 中文关键词: 杜鹃红山茶 干旱胁迫 抗氧化酶 叶绿素荧光 适应响应 |
| 英文关键词: Camellia changii drought stress antioxidant enzyme chlorophyll fluorescence adaptive
response |
| 基金项目:广东省产学研究合作项目（2012B091000120） |
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| 摘要点击次数: 2166 |
| 全文下载次数: 831 |
| 中文摘要: |
| 分析研究了国家一级保护珍稀濒危植物杜鹃红山茶（Camellia changii Ye）叶片在不同程度干
旱胁迫及复水条件下叶绿素荧光参数的变化特性及抗氧化酶代谢情况，初步探讨了杜鹃红山茶对干旱胁迫
的响应适应性。结果表明，杜鹃红山茶通过PS Ⅱ系统和抗氧化酶系统应对外界的干旱胁迫，重度干旱胁迫
使杜鹃红山茶的PS Ⅱ受到损害，光合电子传输能力下降，但一定程度的干旱处理有利于提高PS Ⅱ反应中
心开放部分的比例。研究结果为栽培生产杜鹃红山茶提供参考，使其更好地适应干旱逆境。 |
| 英文摘要: |
| Camellia changii is the rare and endangered species and the first-grade state protected plant. This
paper analyzed the variation characteristics of chlorophyll fluorescence parameters and metabolic response of antioxidant
enzyme in C. changii leaves under different degrees of drought, preliminary studied the adaptive response of C. changii
to drought stress and rehydration. The results showed that C. changii responded to external drought stress through PS Ⅱ
system and antioxidant system. The severe drought stress damaged PS Ⅱ system and decreased photosynthetic electron
transport capacity, but a certain degree of drought stress was beneficial to improve the PS Ⅱ reaction center opening
proportion. The results provided references for cultivation, and made it better be adapt to drought stress. |
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