บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Improving control of green and blue molds of oranges by combining Pantoea agglomerans (CPA-2) and sodium bicarbonate.

Teixido, N., Usall, J., Palou, L., Asensio, A., Nunes, C. and Vinas, I.

European Journal of Plant Pathology. Volume 107, Number 7, 2001. Pages 685-694.

2001

บทคัดย่อ

Improving control of green and blue molds of oranges by combining Pantoea agglomerans (CPA-2) and sodium bicarbonate.

The potential of using Pantoea agglomerans (strain CPA-2) alone, or in combination with sodium bicarbonate or sodium carbonate solutions, for the control of Penicillium digitatum (green mould) and P. italicum (blue mould) on oranges was investigated under ambient (20 deg C) and cold storage (3 deg C) conditions. Pantoea agglomerans controlled both pathogens on oranges at 2 x 108 cfu/ml. The biological control agent was completely tolerant to 2% sodium bicarbonate at room temperature, although its culturability was reduced by >1000-fold after 30 minutes in 2% sodium carbonate. The efficacy of P. agglomerans for the control of green mould was improved when combined with sodium bicarbonate, resulting in complete and 97.6% reduction of decay incidence at 3 and 20 deg C compared to untreated controls. Satisfactory results were also obtained with the combined treatment for the control of blue mould. P. agglomerans grew well inside wounds on oranges at both 20 and 3 deg C. In contrast, it showed a reduced growth on the surface of intact fruit. Sodium bicarbonate at 2% concentration did not noticeably affect antagonist population development. Thus, the use of bicarbonate treatment at 2% followed by the antagonist P. agglomerans CPA-2 could be an alternative to chemicals for control of postharvest diseases on oranges.