บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effect on stem-end rot and anthracnose levels of dipping mango fruit in host-defence-promoting compounds.

Zainuri; Joyce, D. C.; Wearing, A. H.; Coates, L. M.; Crossley, C. M.;

ACIAR Proceedings Series Year: 1998 Issue: No. 80 Pages: 202-207 Ref: 24 ref.

1998

บทคัดย่อ

Effect on stem-end rot and anthracnose levels of dipping mango fruit in host-defence-promoting compounds.

An experiment was conducted to determine if treatment with the host-defence-promoting compounds, salicylic acid and potassium phosphate, would induce fruit resistance to stem-end rot [Glomerella cingulata] and anthracnose (Dothiorella dominicana). Mango cv. Kensington Pride fruit were treated with 0, 10, 100 and 1000 mg/litre sali cyclic acid or potassium phosphonate as a series of 3 preharvest dips and 1 postharvest dip. Ripening (colour, firmness) and disease (severity, incidence) parameters were assessed at various intervals during shelf life at 23 deg C. Neither sali cyclic acid nor potassium phosphonate treatments reduced disease incidence or severity under the conditions of this experiment. For both pathogens, disease symptoms (lesions) appeared when the fruit started to ripen, as indicated by colour and firmness changes. There were no significant treatment effects on colour or firmness changes. These results suggest that sali cyclic acid and potassium phosphate did not induce host resista

nce mechanisms.