| Abstract: In order to screen out the suitable varieties of Pleurotus ostreatus at high temperature cultivation in Beijing area, the growth rate, fruiting character and yield of 23 varieties of Pleurotus ostreatus were observed and compared. The results showed that the mycelium of 'Yunnan 89', 'Gaowenhuiping' and 'Pinggu 125' were white and strong, began to consume culture medium after 3 d and were full for 21, 24, 28 d with the daily growth of 11.4, 10.0, 8.6 mm, respectively. The sporophore was gray with good ductility, the thickness of the cap was 7.0 mm, and the weight of the fruiting body ranked the top 4 which were 429.0, 264.0, 291.3 g, respectively, and the single rod production ranked the top 3, which were 1.68, 1.63, 1.62 kg, respectively. Biological efficiency were the top 3, they were 112%, 108.7% and 108%, respectively, the total tide were all 5 times, and the total score were 10.0, 9.0 and 9.0 which ranked the top 3. Therefore, 'Yunnan 89', 'Gaowenhuiping' and 'Pinggu 125' could be used as mushroom varieties with high temperature resistance to demonstrate in Beijing area. |