Development of Neutaribeosut Varieties (Pleurotus ostreatus) Chongpung, Myongwol

This study was carried out to find a useful mushroom at Chungnam Agricultural Research And Extention Service. Twenty materials used were collected from domestic and exotic area. These races were compared bontanical characteristics to leading varieties by PCR-RAPD methods. Mycelial growth temperature of Chongpung and Myongwol were at 20 to 250 and 25 to 30°C at PDA medium, respectively mycelial growth of these varieties were similiar at pH 6.5 to 7,5. In case of mushroom cultivation temperature ranges, Chongpung was at 5 to 26 and Myongwol was at 7 to 28C, but the optimum temperature range of these were appeared at 15 to 190. Culture temperature of these was 23°C and period of mycelial culture was needed 23 to 24 days under 850 cc/pp, while was needed 11 to 12 days at waste cotton medium. Cap color of these at first inducing mushroom was all dark blue, but at late growing stages Chongpung was shown as grey, and Myongwol was shown as dark grey. Yield of Chongpung was appeared as 46kg/3.3m and that of Myongwol was 41 kg /3.3m , while Chunchu No2 as check was 40 kg/3.3m. Results from PDA medium and PCR RAPD analysis two of these were different from others.