Crop productivity of petunia in relation to photosynthetically active radiation and air temperature
1991
Lieth, J.H. | Merritt, R.H. | Kohl, H.C. Jr
Petunia hybrida 'Snow Cloud' plants with leaf area indices of 3.5 to 4 were grown under widely varying photosynthetically active radiation and temperature conditions in growth chambers and greenhouses in California and New Jersey. The rate of shoot dry weight gain per unit area increased with increasing photosynthetic photon flux density (PPFD) and had a convex relationship with air temperature. A mathematical model incorporating these patterns fit the data with an R2 of 0.985. This model provides a tool for analyzing production characteristics such as dry matter production efficiency.
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