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Climate change : a response surface study of the effects of CO2 and temperature on the growth of French beans

By D. C. E. Wurr, R. N. Edmondson and J. R. (Jane R.) Fellows

Abstract

The possible impact of global rises in atmospheric CO2 concentration and temperature on the growth and development of French beans (Phaseolus vulgaris) was examined using growth cabinets. Five CO2 concentrations of 350, 450, 550, 650 and 750 vpm and five temperatures of 14·5, 15·5, 16·5, 17·5 and 18·5°C were tested using a fractional factorial design comprising nine treatment combinations of the two factors. Plants were grown under constant irradiance, common atmospheric humidities (vpd 0·5 kPa) and non-limiting supplies of water and mineral nutrients. The plant growth response was modelled by fitting polynomial response function curves to the times to first flower opening, first bean set, 50% maturity and the number and yield of beans. The effects of temperature were large and positive for most of the measured variables, whereas the effects of CO2 were small and negative or non-existent. Increased temperature substantially reduced the time to flowering and the time from bean set to 50% maturity and increased the number and yield of mature beans whereas increased CO2 concentration had little effect on plant growth except that bean yield was very slightly reduced. There was no significant evidence of interaction between the CO2 concentration effects and the temperature effects.\ud \ud The time to maturity and yield of mature beans was simulated for the 2020s (2010 to 2039) and the 2050s (2040 to 2069) using the fitted polynomial models and four climate change scenarios suggested by the UK Climate Impacts Programme. These simulations showed that, depending upon the assumed scenario, the 2020s yields could rise by 39–84% and time to maturity reduce by between 6 and 15 days whereas the 2050s yields could rise by 51–118% and time to maturity reduce by between 9 and 25 days

Topics: SB
Publisher: Cambridge University Press
Year: 2000
OAI identifier: oai:wrap.warwick.ac.uk:826

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Citations

  1. (1972). A method for screening Phaseolus genotypes for tolerance to low temperatures.JournalofHorticulturalScience47,279±290.
  2. (1998). Climate change: a response surface study of the effects of CO# and temperature on the growth of beetroot, carrots and onions. doi
  3. (1994). Fractional factorial designs for factors with a prime number of quantitative levels.
  4. (1998). Impacts Programme (1998a). Climate Change Scenarios for the United Kingdom ± Summary Report.U K Climate Impacts Programme
  5. (1998). Impacts Programme (1998b). Climate Change Scenarios for the United Kingdom ± Scienti®c Report. UK Climate Impacts Programme
  6. (1999). Interactions between increasing CO# concentration and temperature on plant growth. doi
  7. (1995). Modelling the impact on navy beans and vining peas of temperature changes predicted from global warming. doi
  8. (1997). Predicting phasic development of green beans for processing using a model with high temperature reduction of thermal time accumulation. doi
  9. (1998). Simulation and prediction of plant phenology for ®ve crops based on photoperiod¬temperature interaction. doi
  10. (1981). Studies on Phaseolus vulgaris (dwarf French bean) for seed and edible pods.
  11. (1985). The effect of winter and summer CO# enrichment on the growth and fruit yield of greenhouse cucumber.
  12. (1988). The effects of summer CO# enrichment and ventilation temperaturesClimate change 387 on the yield, quality and value of glasshouse tomatoes.
  13. (1997). The growth, development and yield of onion (Allium cepa L.) in response to temperature and CO# .
  14. (1993). The Likely Effects on Vegetable Crops of Changes in Mean Temperature Associated with Global Warming. Report to MAFF.

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