ISHS Acta Horticulturae 475: VII International Symposium on Pear Growing
ADVANCES IN IMPROVING THE POSTHARVEST QUALITY OF PEARS |
| Authors: | D. Sugar, D.G. Richardson, P.M. Chen, R.A. Spotts, R.G. Roberts, T. Chand-Goyal |
| Abstract:
The principal advance in pear postharvest science in recent years has been the recognition of the need for integration of diverse factors, which cumulatively improve fruit quality during storage. Pre-harvest factors, including crop load management, irrigation, nutritional management (especially N and Ca) and fruit maturity, affect both fruit quality and susceptibility to postharvest diseases. Fruit responses to very low oxygen levels and the effects of low O2 and high CO2 on ethylene pathways and fruit ripening have been identified, as well as the length of time pear fruit can tolerate near-anaerobic conditions and postharvest treatments against quarantined pests. Several species of yeast and bacteria have been found to aid in the control of postharvest pathogens. Laboratory grown yeasts Cryptococcus laurentii, C. infirmo-miniatus, and Rhodotorula glutinis have given excellent control of blue mold decay caused by either TBZ-sensitive or TBZ-resistant strains of Penicillium expansum. These experimental yeasts and the biocontrol products Aspire and Bio-Save 110, which are registered for use on pear in the U.S.A., are compatible with TBZ, with the exception of R. glutinis. Integration of pre-harvest factors, postharvest biological and chemical treatments, and optimum use of storage atmosphere can maximize retention of pear fruit quality during storage. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
