บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effect of temperature on growth of Penicillium digitatum and Geotrichum candidum on agar and on citrus fruit and chemical control of post-harvest rot caused by the two fungi.

Kassim, M. Y.; Shamsher Khan;

Journal of King Saud University, Science Year: 1996 Vol: 8 Issue: 1 Pages: 33-37 Ref: 16 ref.

1996

บทคัดย่อ

Effect of temperature on growth of Penicillium digitatum and Geotrichum candidum on agar and on citrus fruit and chemical control of post-harvest rot caused by the two fungi.

P. digitatum and G. candidum were isolated from infected citrus fruits collected from cold storage in Riyadh, Saudi Arabia. Growth rates of the fungus at 5, 10, 20, 25, 30 and 35 deg C were compared on agar and on fruit. The rate increased with increased temperature, reaching optima at 20 and 25 deg , respectively, on agar and on fruits for P. digitatum and 30 deg for G. candidum on both agar and fruit. The growth rate of both fungi dropped sharply at 35 deg on agar but dropped less on fruit. To control the fruit rot of citrus caused by P. digitatum and G. candidum, carbendazim (as Bavistin), benomyl, guazatine and imazalil were used at the rate of 500 mg/litre. Fruits were inoculated with the respective fungi and after 20 hours of incubation dipped for one minute in the fungicidal solutions separately. The infected fruits were incubated in polythene bags at room temperature for 2 weeks. All the tested fungicides reduced the fruit infection caused either by P. digitatum or by G. candidum. Guazat

ine was more effective than the other fungicides and it totally inhibited the rot caused by either of the 2 fungi.