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Cultural characteristics on collected strains of Lentinula edodes and correlation with mycelial browning

표고 수집균주의 재배적 특성 및 갈변과의 상관관계

  • Kim, Young-Ho (Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA) ;
  • Jhune, Chang-Sung (Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA) ;
  • Park, Soo-Cheol (National Academy of of Agricultural Science, RDA) ;
  • You, Chang-Hyun (Forest Mushroom Research Center) ;
  • Sung, Jae-Mo (Department of Agricultural Biology, Kangwon National University) ;
  • Kong, Won-Sik (Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA)
  • Received : 2011.10.15
  • Accepted : 2011.10.30
  • Published : 2011.12.31

Abstract

Shiitake mushroom (Lentinula edodes) is usually cultivated on the oak log. Log cultivation of this mushroom is getting difficult to get oak logs and has a weak point of its long cultivation period. Recently sawdust cultivation is getting increase. It is important to make mycelia browning on the substrate surface. This browned surface in sawdust cultivation plays an important role like as artificial bark of the oak log, which protects the other pests and suppresses water evaporation in the substrate. The period for mycelia browning is so long that the sawdust cultivation of Shiitake mushroom can not spread well into the mushroom farms. The development of methods for the rapid mycelia browning is quite required. In this article we would like to find cultural characteristics of collected strains and to see the correlation with mycelial browning. Mycelial growth in the media was different according to kinds of media and strains. The optimal temperature on mycelial growth was $20-25^{\circ}C$. Browning patterns of mycelium under 200 Lux seemed to be used for a key to differentiate the strains for sawdust cultivation. Browning period was 30-40 days in the agar media and 70-100 days in the sawdust bag cultivation. When we considered the productivity and the other characteristics, ASI 3046 is the best for the bag cultivation. Significance between mycelial growth and browning was not accepted, but that of mycelial growth between on PDA and sawdust was accepted. Browning period on the PDA and sawdust showed a strong relationships. These results suggested that the browning habits could not be depend on the difference of media, but on their own properties. To select the strain showed fast browning can be done by using agar media for saving time.

Keywords

Mycelial browning;Lentinula edodes;Sawdust cultivation;Shiitake mushroom