The white button mushroom, Agaricus biporus is commercially the fifth important edible mushroom, accounting for a Korean production of 10,996 tons in Korea, 2012. The button mushroom, A. bisporus, mostly cultivated at mushroom farm controlled 16-19°C temperature during fruiting period in all seasons. For this reason, the production costs including the cost of energy, is very expensive to keep optimal culturing temperature. In this study, mycelial growth of strains collected from various countries was investigated at different cultivation temperature conditions to use baseline data for developing thermo-tolerance varieties. Mycelial growth was recorded strains cultivated in CDA (Compost Dextrose Agar) after two weeks. 12 strains among total 264 strains were cultivated well in high temperature. These strains will be cultivated in high temperature to confirm relationships between mycelial growth and fruit-body formation in same conditions.

• Youn-Lee Oh(Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA)
• Kab-Yeul Jang(Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA)
• Youn-Keol Nam(Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA)
• Young-Bok Yoo(Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA)
• Pyung-Gyun Shin(Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA)
• Won-Sik Kong(Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA)
• In-Gul Choi(School of Life Sciences and Biotechnology, Korea University)