บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Responses of mango and mortality of Anastrepha ludens and A. obliqua to modified atmospheres at high temperatures.

Yahia, E. M.; Ortega, D.; Santiago, P.; Lagunez, L.;

Postharvest Horticulture Series - Department of Pomology, University of California Year: 1997 Issue: No. 15 Pages: 105-112 Ref: 11 ref.

1997

บทคัดย่อ

Responses of mango and mortality of Anastrepha ludens and A. obliqua to modified atmospheres at high temperatures.

Mango fruit in Mexico are infested with several insects including various species of fruit flies. Hot water (46.1 deg C for 65-90 minutes, depending on fruit weight) is the only authorized quarantine treatment in the country. Some mango cultivars are tolerant to modified and controlled atmospheres (MA/CA) and to heat. The tolerance was tested of the fruit and the mortality of eggs and third-instar larvae of Anastrepha ludens and A. obliqua at 44-48 deg C for 160-220 minutes in air or at 44 deg C for 120-160 minutes in either O2 levels as low as 0.8% and/or CO2 levels as high as 67%. 'Manila' and 'Oro' mangoes were injured and never ripened when exposed to hot dry air (up to 48 deg C at 50% RH) for 220 minutes, but were not deleteriously effected when treated for 160 minutes, followed by storage at 10 deg C and 85% RH for up to 4 weeks. Exposure of fruit to MA at high temperatures for 160 minutes delayed fruit ripening and caused no injury. Neither treatment had any significant effect on anthracn

ose. It is concluded that treatment with O2 concentrations as low as 0.8%, and/or CO2 concentrations as high as 67% in a combination with hot dry air at temperatures up to 48 deg C for 160 minutes, did not cause any deleterious effect on fruit quality of the 2 mango cultivars studied. In addition, 44 deg C for 160 minutes in air or in MA caused 100% mortality of eggs and third-instar larvas of A. ludens and A. obliqua; 44 deg C for 120 minutes in MA caused only about 70% mortality of eggs of A. obliqua.