บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Postharvest biocontrol of green and blue mold and sour rot of citrus fruit by Debaryomyces hansenii.

Chalutz, E.; Wilson, C. L.;

Plant Disease Year: 1990 Vol: 74 Issue: 2 Pages: 134-137 Ref: 12 ref.

1990

บทคัดย่อ

Postharvest biocontrol of green and blue mold and sour rot of citrus fruit by Debaryomyces hansenii.

D. hansenii, isolated from the surface of lemon fruit, inhibited incidence of green and blue mould (Penicillium digitatum and P. italicum, respectively) and sour rot (Geotrichum candidum) of 7 citrus fruit cultivars (grapefruit, Shamouti orange, Valencia orange, Eureka lemon, Temple orange [tangor], kumquat (Fortunella margarita) and pummelo (Citrus grandis)). It was more effective against P. digitatum than P. italicum or G. candidum. The lemon isolate of D. hansenii inhibited P. digitatum on grapefruit more effectively than 8 other isolates of the same species. Efficacy of D. hansenii was maintained when applied simultaneously or prior to inoculation with P. digitatum. Efficacy was reduced when D. hansenii was applied after inoculation. Control of P. digitatum of grapefruit was maintained for 21 d at 11 or 22 deg C. The yeast antagonist also reduced the incidence of P. digitatum decay of injured, naturally infected grapefruit stored at 11 deg for 21 d. D. hansenii did not inhibit the growth inculture of P. digitatum, P. italicum or G. candidum. A culture filtrate of the yeast antagonist failed to provide any protection against P. digitatum of grapefruit. It may be that D. hansenii inhibits the pathogens by a mode of action other than antibiotic production.