| 甜茶光合日变化及其与环境因子的关系 |
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| 引用本文： | 王满莲,唐辉,孔德鑫,史艳财,邹蓉,蒋海英.甜茶光合日变化及其与环境因子的关系[J].北方园艺,2011(18):25-28. |
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| 作者姓名： | 王满莲 唐辉 孔德鑫 史艳财 邹蓉 蒋海英 |
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| 作者单位： | 广西壮族自治区,中国科学院广西植物研究所,广西桂林541006 |
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| 基金项目： | 广西自然科学基金资助项目(桂科自0991228); 桂林市科技成果转化与应用资助项目(20100103-6) |
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| 摘 要： | 用Li-6400便携式光合测定系统对甜茶的光合-光强响应曲线和光合日变化进行了测定.结果表明:100％光下甜茶的光饱和点、光补偿点与最大净光合速率均显著高于30％光下的值,但2种光下甜茶的表观量子效率值均较低,且无显著差异,说明甜茶强光下的光合能力较强,但对弱光的利用效率较低.全光下甜茶的净光合速率(Pn)日进程呈双峰型曲线,中午前后Pn的下降与此时的强光、高温和低湿度有关,但非气孔限制是主要限制因素.逐步多元回归和通径分析表明,光合有效辐射、气温、叶温和空气湿度是直接影响净光合速率日变化的主要因子.因此,甜茶适宜种植在阳光充足的环境,但夏季适度遮荫利于其生长.
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| 关 键 词： | 甜茶 光响应曲线 光合日变化 逐步多元回归 通径分析 |
Study on the Diurnal Variation of Photosynthesis for Rubus suavissimus S.Lee and Its Relation to Environmental Factors |
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| WANG Man-lian
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TANG Hui
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KONG De-xin
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SHI Yan-cai
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ZOU Rong
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JIANG Hai-ying.Study on the Diurnal Variation of Photosynthesis for Rubus suavissimus S.Lee and Its Relation to Environmental Factors[J].Northern Horticulture,2011(18):25-28. |
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| Authors: | WANG Man-lian TANG Hui KONG De-xin SHI Yan-cai ZOU Rong JIANG Hai-ying |
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| Institution: | WANG Man-lian,TANG Hui,KONG De-xin,SHI Yan-cai,ZOU Rong,JIANG Hai-ying(Guangxi Institute of Botany,Guangxi Zhuangzu Autonomous Region and the Chinese Academy of Sciences,Guilin,Guangxi 541006) |
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| Abstract: | The Pn-PPFD response curves and diurnal variation of photosynthesis of Rubus suavissimus S.Lee were measured with the Li-6400 portable photosynthesis measuring system.The results showed that the maximal net photosynthesis rate,light saturation point and light compensation point of R.suavissimus were significantly higher in full light than in 30% light transmittance.Both their apparent quantum yield were low,and there's no significant difference between them.Indicating that it's photosynthesis capacity was h... |
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| Keywords: | Rubus suavissimus light response curve diurnal variation of photosynthesis stepwise multi-regression analysis of path coefficient |
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