บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Improvement of kiwifruit resistance to Botrytis storage rot by curing.

Ippolito, A.; Lattanzio, V.; Nigro, F.; Venere, D. di; Lima, G.; Castellano, M. A.; Salerno, M.;

Phytopathologia Mediterranea Year: 1994 Vol: 33 Issue: 2 Pages: 132-136 Ref: 24 ref.

1994

บทคัดย่อ

Improvement of kiwifruit resistance to Botrytis storage rot by curing.

ABSTRACT

In trials assessing the control of the most important postharvest disease of kiwifruit, storage rot (B. cinerea), fruits were cured at temp. between 5 and 30 deg C with 95-98% RH for 24-96 h before being stored at 0 deg C. At 15 deg C, the fruits were also cured in the presence of low RH (40-45%). Pedicel scars, where most infections start, and artificial wounds were inoculated with the pathogen. All the tested curing temp. induced a significant decrease in storage rot of fruits inoculated either on artificial wounds or on pedicel scars, the lowest number of infections being obtained in the fruits cured at 15 deg C. The percentage of infected fruits, was significantly lower in fruits cured for 48 h than for 24 h; longer curing durations did not induce any further significant reduction of infection. Lower infections were obtained in high RH-cured fruits compared with low RH. The enzyme phenylalanine ammonia-lyase (PAL) was assayed in tissues close to artificial wounds and pedicel scars of cured a

nd uncured kiwifruit. PAL activity on the whole showed increasing values in cured fruits, where under blue light a certain accumulation of phenolics was evident.