Abstract: 【Objective】Study the growth characteristics of different Lentinula edodes strains and the differences between strains to screen for the elite strains suitable for cultivation in the western regions of Inner Mongolia.【Methods】26 Lentinula edodes strains were used as test materials. The colony morphology,mycelium growth rate,optimum growth temperature,mycelial growth vigor,and phylogenetic relationships between strains were analyzed by morphological observation and antagonistic test.【Results】The optimum growth temperature of the test strains was 25 ℃. XG-168,XG-Y,Dongxiang No. 4,and Dongxiang No. 5 had complete colony edges,fast mycelial growth rate,vigorous colony growth,and multiple lock-like joint structure. The average mycelium growth rates were all 3.33 mm/d. Mycelium germination times were all 2 d. The full growth times of mycelium were all 12 d,with vigorous and dense mycelium growth. The genetic relationships between XG-Y and Fupingxianggu 0912,HXG-8L1 and Qingyuanxianggu,Zunhuaxianggu 168 and Pingquanxianggu 168,XG-Y and MXG-1669,XG-12 and MXG-1669 strains were relatively close. While Baolin No. 2 had a distant genetic relationship with other strains.【Conclusion】XG-168,XG-Y,Dongxiang No. 4 and Dongxiang No. 5 had prominent growth characteristics,could be used as elite strains for cultivation in the western regions of Inner Mongolia.

Key words: Lentinula edodes strain, Growth characteristic, Antagonistic reaction, Genetic relationship