| 彩叶草光合特性的比较研究 |
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| 引用本文： | 罗兰,刘光德,李名扬.彩叶草光合特性的比较研究[J].安徽农业科学,2011,39(23):13998-13999. |
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| 作者姓名： | 罗兰 刘光德 李名扬 |
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| 作者单位： | 重庆市农业学校,重庆,401329;西南大学园艺园林学院,重庆,400715 |
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| 摘 要： | 目的]为制定完善的彩叶草栽培养护管理措施提供科学的依据。方法]以5个彩叶草品种为试材,利用CB-1102便携式光合蒸腾仪对光合特性进行比较。结果]彩叶草净光合速率（Pn）日变化为典型的双峰曲线,Pn日变化受气孔限制因素的影响较小,主要取决于非气孔因素。彩叶草光合作用对光照强度（PAR）水平变化的响应均可以用二次方程来描述。彩叶草光补偿点（LCP）为28～164μmol/（m2.s）,光饱和点（LSP）为1 707～1 920μmol/（m2.s）。结论]在栽培生产中,应选择光照充足的地方种植彩叶草。
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| 关 键 词： | 彩叶草 生态因子 光合特性 |
Comparative Studies on Photosynthetic Characteristics of Coleus blumei Benth. |
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| Institution: | LUO Lan et al(Chongqing Municipal Agricutural School,Chongqing 401329) |
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| Abstract: | Objective]The research aimed to provide the scientific basis for the establishment of cultural conservation and management measures of Coleus blumei Benth.Method]Photosynthetic characteristics of five Coleus blumei Benth were studied comparatively with CB-1102 photosynthetic instrument.Result]Diurnal change in net photosynthetic rate(Pn) of mature Coleus blumei Benth leaves was a typical bimodal curve determinately regulated by non-stomatal conductance.The responsive curves of the photosynthesis in mature cherry leaves to the change of photosynthetic active radiation could be described with quadratic equations.The light compensation point(LCP)of different cherry cuhivars was 28-164 μmol/(m2·s),and light saturation point(LSP)was 1 707-1 920 μmol/(m2·s).Conclusion]Coleus blumei Benth should be planted in the area with adequate light. |
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| Keywords: | Coleus blumei Benth Ecological factor Photosynthetic characteristics |
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