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首页> 外文会议>International Symposium on Plant Growth Modeling, Simulation, Visualization and their Applications; 20031013-20031016; Beijing; CN >Phenological Effects on Photosynthesis: Suggestions for Modeling
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Phenological Effects on Photosynthesis: Suggestions for Modeling

机译：物候对光合作用的影响：建模建议

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摘要

Results are presented about the effects of fruiting and flowering on leaf nitrogen content and photosynthetic capacity in mango. The relationship between leaf photosynthetic capacity and the total amount of nitrogen per unit leaf area, N_a, seems to be a robust one in mango, but the presence of inflorescences changes the origin and slope of the linear relationship between mitochondrial respiration rate and N_a. The presence of developing fruits has a positive effect on N_a of leaves experiencing the same light regime than control leaves. This effect was found to be mediated mainly by an increase in the mass-to-area ratio of leaves, M_a. On the contrary, the leaf-to-fruit ratio per se has a negative effect on N_a by decreasing the leaf nitrogen concentration per unit mass, while M, remains constant. The possibility of incorporating such effects in a biochemical model of leaf photosynthesis is discussed.
机译：结果表明，结果和开花对芒果叶片氮含量和光合能力的影响。叶片光合作用能力与单位叶面积氮总量N_a之间的关系似乎是芒果中一种稳健的关系，但花序的存在改变了线粒体呼吸速率与N_a之间线性关系的起源和斜率。发育中的果实的存在对与对照叶片经历相同光照制度的叶片的N_a具有积极影响。发现这种作用主要是通过增加叶片的质量面积比M_a来介导的。相反，通过降低每单位质量的叶氮浓度，叶果比本身对N_a产生负面影响，而M保持恒定。讨论了将这种效应纳入叶片光合作用的生化模型的可能性。

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