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CO2 补偿浓度与玉米表观光合作用的关系。

Relation of CO(2) Compensation Concentration to Apparent Photosynthesis in Maize.

机构信息

Department of Agronomy, Cornell University, Ithaca, New York 14850.

出版信息

Plant Physiol. 1969 Dec;44(12):1724-8. doi: 10.1104/pp.44.12.1724.

Abstract

Significant differences in CO(2) compensation concentration measured in the field among varieties of the species Zea mays L. are reported for the first time. CO(2) compensation concentrations were significantly (P</= 0.01) and negatively correlated with apparent photosynthesis at 300 mul CO(2)/liter air. The Michaelis constant (as defined) for a leaf was significantly (P</= 0.01) and positively correlated with apparent photosynthesis among varieties. While the first correlation is similar to behavior of CO(2) compensation among species of different photosynthetic efficiency, the latter correlation is the converse of the behavior of Km among species.

摘要

首次报道了玉米属不同品种在田间条件下测得的 CO2 补偿浓度存在显著差异。CO2 补偿浓度与 300 μl CO2/升空气中的表观光合作用呈显著负相关(P≤0.01)。叶的米氏常数(定义)与品种间的表观光合作用呈显著正相关(P≤0.01)。虽然第一个相关性与不同光合效率物种之间的 CO2 补偿行为相似,但后一个相关性与物种间 Km 的行为相反。

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