Irradiance, temperature, and carbon dioxide enrichment affect photosynthesis in Phalaenopsis hybrids

被引：32

作者：

Lootens, P ^{[1
]}

Heursel, J ^{[1
]}

机构：

[1] Minist Small Enterprises Traders & Agr, Ctr Ecophysiol Diag Techniques, Dept Crop Husb & Ecophysiol, Agr Res Ctr Ghent, B-9820 Merelbeke, Belgium

来源：

HORTSCIENCE | 1998年 / 33卷 / 07期

关键词：

CAM; phalaenopsis; photosynthesis; irradiance; temperature; CO2; DIF;

D O I：

10.21273/HORTSCI.33.7.1183

中图分类号：

S6 [园艺];

学科分类号：

0902 ;

摘要：

The short-term effects of photosynthetic photon flux (PPF), day/night temperatures and CO2 concentration on CO2 exchange were determined for two Phalaenopsis hybrids. At 20 degrees C, the saturating PPF for photosynthesis was 180 mu mol.m(-2).s(-1). At this PPF and ambient CO2 level (380 mu L.L-1), a day/night temperature of 20/15 degrees C resulted in the largest daily CO2 uptake. Higher night temperatures probably increased the respiration rate and lowered daily CO2 uptake in comparison with 20/15 degrees C. An increase in the CO2 concentration from 380 to 950 mu L.L-1 increased daily CO2 uptake by 82%.

引用

页码：1183 / 1185

页数：3

共 20 条

[1] DIURNAL CHANGES IN PHOTOCHEMICAL EFFICIENCY, THE REDUCTION STATE OF Q, RADIATIONLESS ENERGY-DISSIPATION, AND NON-PHOTOCHEMICAL FLUORESCENCE QUENCHING IN CACTI EXPOSED TO NATURAL SUNLIGHT IN NORTHERN VENEZUELA [J].