บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Mycological and phytopathological studies on pitting of stored kiwifruit caused by Phialophora sp. after cold storage.

Quaroni, S.; Saracchi, M.; Sardi, P.; Testoni, A.; Grassi, B.;

Informatore Fitopatologico Year: 1996 Vol: 46 Issue: 9 Pages: 39-46 Ref: 15 ref.

1996

บทคัดย่อ

Mycological and phytopathological studies on pitting of stored kiwifruit caused by Phialophora sp. after cold storage.

A postharvest disease of kiwifruit caused by Phialophora sp. has been reported in most Italian packing houses. Pitting appears on fruits after 3 months of storage or more, usually affecting a low percentage of fruits (2-5%). Micromorphological and phytopathological studies of infected tissues were carried out. Among the isolates, 4 representative strains were identified which, in mycological studies, showed the high variability of this population. Artificial inoculation studies were carried out to assess the role of Phialophora sp. in the pitting disease, the effect of fungicide treatments and the effect of wounding on disease progression. The results confirmed Phialophora sp. as the causal agent of the disease and the strong influence of wounds on establishment of the fungus. At the end of storage, artificially wounded fruits had infection rates of c. 32% when treated with vinclozolin and 46% when untreated, while infection of unwounded fruits reached only c. 3%. The potential danger of this di

sease of kiwifruit is discussed in the light of the lack of the pathogen sensitivity to fungicides authorized for use on this crop.