ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Gamma irradiation for postharvest disinfestation of Ctenopseustis obliquana (Walker) (Lep., Tortricidae).

Lester, P. J.; Barrington, A. M.;

Journal of Applied Entomology Year: 1997 Vol: 121 Issue: 2 Pages: 107-110 Ref: 26 ref.

1997

บทคัดย่อ

Gamma irradiation was examined for its potential as a quarantine treatment for eggs and larvae of the leafroller Ctenopseustis obliquana, a pest of fruit produce. One-day-old eggs were more radiosensitive than 5-day-old eggs, requiring 55.9 Gy and 269 Gy for 99% mortality, respectively. Effective disinfestation of C. obliquana could be achieved with a dose as small as 70.1 Gy, which would inhibit any oviposition by adults developing from irradiated 1-day-old and 5-day-old eggs, and 1st, 3rd and 5th-instar larvae. Further quarantine security for these life stages could be achieved with a dose of 150 Gy which would inhibit adult emergence, or 215 Gy which would inhibit larvae from entering pupation. As these doses are unlikely to damage host fruit, gamma irradiation provides a potential alternative to methyl bromide fumigation.