VIEW ARTICLE
Research Fungistatic Effects of Carbon Dioxide in a Package Environment on the Decay
of Michigan Sweet Cherries by Monilinia fructicola. R. M. De
Vries-Paterson and A. L. Jones, Department of Botany and Plant Pathology and The Pesticide
Research Center; and A. C. Cameron, Department of Horticulture, Michigan State University, East
Lansing 48824. Plant Dis. 75:943-946. Accepted for publication 14 March 1991.
Copyright 1991 The American Phytopathological Society. DOI: 10.1094/PD-75-0943. Fruits of five cultivars of sweet cherry were packaged in low-density
polyethylene and stored in air or in carbon dioxide (CO2) ranging
from 12 to 50% at 20 C for 7 days, or 0 C for 14 days followed by 20 C for 7
days. Before packaging, one-half of the fruits were artificially wounded and
inoculated with conidia of Monilinia fructicola. The incidence of brown
rot was recorded daily, and lesion diameters were measured at the end of four of
the six experiments. Elevated levels of CO2 reduced the onset of
lesion development by 1–7 days depending on the concentration and reduced the
percentage of fruits with lesions, and at the end of the experiment, lesions
were smaller on fruits held in CO2 than on fruits held in air
(controls). Control of brown rot improved as the concentration of CO2
increased from 12 to 50%. At 50% CO2, the development of brown rot on
all fruits was completely inhibited for a 7-day period at 20 C. However, the
fruits developed decay within 2–4 days after they were returned to air at 25 C,
indicating that the CO2 treatments were fungistatic not fungicidal. |