| 郑海,陈小华,黎健龙,黎华寿.水分胁迫对皇竹草形态及叶片光合特性的影响[J].广东农业科学,2014,41(13):25-28 |
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水分胁迫对皇竹草形态及叶片光合特性的影响 |
| Effects of water stress on morphological and photosynthetic characteristics of Hybrid giant napier(Pennisetum hydridum) |
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| DOI： |
| 中文关键词: 皇竹草 水分胁迫 光合特性 |
| 英文关键词: Pennisetum hydridum water stress photosynthetic characteristics |
| 基金项目:国家重大基础研究项目(2011CB100400-G)子项目;国家自然科学基金（41073059）；广东省科技计划项目（B020304008，0203-E12147） |
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| 中文摘要: |
| 采用盆栽方式模拟田间试验,研究了水分胁迫对皇竹草形态和叶片光合特性的影响结果表明,在短期(6d)淹水条件下皇竹草形态没有明显变化,而长期(21d)淹水导致皇竹草茎长出大量须根,叶片出现失绿;淹水条件下皇竹草叶片的净光合速率、气孔导度、蒸腾速率均低于对照，叶绿素荧光Fv/Fm,Fo,Fm 下降明显，叶绿素含量减少;干旱条件下,皇竹草叶片逐渐出现枯黄,且随着干旱程度的加深，叶绿素荧光Fv/Fm,Fo,Fm降低，叶绿素含量减少。 |
| 英文摘要: |
| A pot experiment was conducted to clarify the effects of water stress on morphological and photosynthetic characteristics of hybrid giant napier (Pennisetum hydridum). The results showed as follows: there were no obviously changes of Hybrid giant napier under the short-term flooding (6 d), however stems grew a large number of fibrous roots and
leaves lost green under long-term flooded (21d). The photosynthetic performance, chlorophyll fluorescence Fv/Fm, Fo, Fm and chlorophyll content decreased significantly in the leave of Hybrid giant napier under flooding. Leaves became yellow under drought condition. Chlorophyll fluorescence Fv/Fm, Fo, Fm and chlorophyll content decreased with the drought degree deepen. |
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