บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Enhanced biocontrol of postharvest diseases of apples and pears.

Holmes, R. J.; Alwis, S. de; Shanmuganathan, N.; Widyatuti, S.; Keane, P. J.;

ACIAR Proceedings Series Year: 1998 Issue: No. 80 Pages: 162-166 Ref: 16 ref.

1998

บทคัดย่อ

Enhanced biocontrol of postharvest diseases of apples and pears.

Three treatments (phosphonate dipping, curing and calcium dipping) with the potential to enhance fruit disease resistance were evaluated. Phosphonate (1000 micro g/ml) when applied to wound-inoculated apples at the time of inoculation reduced the incidence of rot caused by Botrytis cinerea and Penicillium expansum by 50% and Mucor piriformis by 30%. Curing pears at 17 deg C for 24 hours was as effective as dipping in iprodione + benomyl or H10 (Rhodotorula glutinis) + CaCl2 promptly after harvest. Curing Granny Smith apples at 15 deg for 24 hours was as effective as H10 (1x107 c.f.u./ml) + CaCl2 but less effective than vinclozolin + carbendazim. On Golden Delicious apples H10 (1x107c.f.u./ml) + CaCl2 gave complete control of blue mould and was as effective as iprodione + benomyl. The addition of CaCl2 enabled highly effective biocontrol on apples with one-tenth the concentration of antagonist. Phosphonate severely inhibited growth and pigmentation of antagonistic yeasts and is therefore not a su

itable amendment. Phosphonate was also incompatible with diphenylamine (DPA) used after harvest for scald control and with CaCl2 used to control bitter pit, and therefore cannot be integrated into current postharvest systems.