Isolation and Identification of Phytophthora citrophthora from Imported Orange Fruits

수입 오렌지로부터 갈색썩음병균(Phytophthora citrophthora)의 분리 및 동정

  • 송장훈 (농촌진흥청 제주감귤연구소) ;
  • 권혁모 (농촌진흥청 제주감귤연구소) ;
  • 문덕영 (농촌진흥청 제주감귤연구소) ;
  • 강혜경 (농촌진흥청 제주감귤연구소) ;
  • 고영진 (순천대학교 응용생물원예학부)
  • Published : 1997.04.01

Abstract

Occurrence of brown rot was observed on imported orange fruits, and irregular brown spots were appeared as an intial symptom. White colored mycelia were developed rapidly on the surface of the fruits under the humid condition and resulted in rotting of the fruits. The causal organism of brown rot of orange was identified as Phytophthora citrophthora. Most sporangia were nondeciduous, papillate, ovoid, and measured 25.5~51.5$\times$17.9~34.7 ${\mu}{\textrm}{m}$ in size. P. citrophtora was pathogenic on Satsuma mandarin as well as orange. Symptoms were produced 3~7 days after artificial inoculation of sporangia and mycelia mixture on the fruits of orange and Satsuma mandarin, which were similar to those on the naturally infected fruits.

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