温度对铁皮石斛生长及生理特性的影响
Effects of Temperature on the Growth and Physiological Characteristics of Dendrobium officinale(Orchidaceae)
查看参考文献38篇
文摘
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通过不同温度下的控制实验,研究了铁皮石斛光合作用与生长对温度的响应,以期为铁皮石斛的栽培提供理论依据.温度对铁皮石斛的光合速率(Pn)有明显影响,30℃处理的植株具有最高的饱和光合速率(Pmax),其较高的光合速率与RuBP电子传递速率与羧化速率间相对平衡有关.温度对铁皮石斛茎的生长及多糖含量有明显影响,20℃处理的石斛多糖含量显著性的高于其他两个处理,而茎长,茎节数,茎鲜重等则是在30℃下最高.结果表明,30℃的温度对铁皮石斛的光合作用较为适宜,但在20℃条件下植株具有更高的多糖含量 |
其他语种文摘
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In this paper,we studied the response of photosynthesis and growth in Dendrobium officinale to temperature under the control experiment to provide a theoretical basis for its cultivation. Temperature had a significant effect on the photosynthetic rate(Pn)of D.officinale. The light saturated photosynthesis at ambient CO2 concentration(Pmax)of the plants were highest at 30℃. High photosynthetic rate at 30℃ were related to the more balance between the maximum rate of electron transport and maximum rate of RuBP-mediated carboxylation. Moreover temperature also showed a significant effect on the growth and polysaccharide content of D.officinale's stem. The polysaccharide content of D.officinale at 20℃ was significantly higher than that at other temperatures, while the stem length, stem node number, stem fresh weight and stem dry weight were achieved the highest point at 30℃.The results showed that, the temperature of 30℃ was more appropriate for the photosynthesis of D.officinale, while the plants at 20℃ have higher polysaccharide content |
来源
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云南植物研究
,2010,32(5):420-426 【核心库】
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关键词
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铁皮石斛
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光合速率
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叶片性状
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温度
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多糖
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地址
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中国科学院昆明植物研究所, 云南, 昆明, 650204
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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0253-2700 |
学科
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植物学 |
基金
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国家自然科学基金
;
云南省应用基础研究计划项目
;
中国科学院科技支黔工程项目
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文献收藏号
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CSCD:4033056
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