ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Control of postharvest diseases of fruits with biocontrol agents.

Janisiewicz, W. J.;

The biological control of plant diseases. Proceedings of the International seminar "Biological control of plant diseases and virus vectors" held in Tsukuba, Japan, Sep. 17-21, 1990 Year: 1991 Pages: 56-68 Ref: 39 ref.

1991

บทคัดย่อ

The use of epiphytic microorganisms to control blue mould (Penicillium expansum) and grey mould (Botrytis cinerea) on pome fruit is discussed. A screening process was designed to detect both antibiotic-producing and non-producing antagonists. Major emphasis was placed on screening in situ, where wounded fruit were treated with an aqueous suspension of potential antagonists, followed by the application of a conidial suspension of the pathogen. Isolates which prevented or greatly reduced rot development were used in further tests where a quantitative relationship between antagonist and the pathogen inoculum concn was determined. The most effective antagonists were then tested for their ability to colonize the wound surface, survival under storage conditions, and compatibility with various postharvest treatments and additives. By means of this procedure, many potentially valuable antagonists from various groups (Gram-negative and -positive bacteria, yeasts and yeast-like filamentous fungi) were isolated. Further research is needed to determine suitable formulations, large-scale production methods and survival of biocontrol agents.