A new spore-less cultivar Lentinula edodes ‘Daedam’ was bred from monokaryotic strains of ‘LE15401-24’ and ‘LE192118-10’. The optimum temperature for mycelial growth of ‘Daedam’ on potato dextrose agar was 22~25oC. Total cultivation period of the new cultivar, from inoculation to its first harvest, was 134 days, similar to that of the control cultivar ‘Hwadam’. Total yield of ‘Daedam’ was 222g per 3kg substrate, and was lower than that of control cultivar(266.0g). The fruiting body of ‘Daedam’ had a thick and small pileus and a longer stem compare to control cultivar. As a result of a analyzing the productivity of ‘Daedam’ on the different substrate types, the biological efficiency was 26.7% in the 1.2kg cylindrical substrate(CS), which was higher than that of the 3kg rod-type substrate(RS). 'Daedam' had a similar yield compared to 'Hanacham' in first fruiting body production, but the cultivation period was 40 days shorter. Therefore, 'Daedam' can only harvest fruiting bodies once, it is thought that it can be used as spore-less oak mushroom cultivar for short-term cultivation instead of 'Hanacham' in mushroom farms.

서 론
재료 및 방법
    시험균주
    생산성 검정
    발이 및 자실체 특성 조사
    PCR 다형성 검정
결과 및 고찰
    육성과정
    ‘대담’의 주요특성
    특성 검정
    생산성 검정
적 요

• 김정한(경기도농업기술원 친환경미생물연구소) | Jeong-Han Kim (Organic Microorganism Research Center, Gyeonggi-do Agricultural Research & Extension Services Gyeonggi Gwangju, 12805, Korea) Corresponding author
• 강영주(경기도농업기술원 친환경미생물연구소) | Young-Ju Kang (Organic Microorganism Research Center, Gyeonggi-do Agricultural Research & Extension Services Gyeonggi Gwangju, 12805, Korea)
• 이채영(경기도농업기술원 친환경미생물연구소) | Chae-Young Lee (Organic Microorganism Research Center, Gyeonggi-do Agricultural Research & Extension Services Gyeonggi Gwangju, 12805, Korea)
• 김연진(경기도농업기술원 친환경미생물연구소) | Yeon-Jin Kim (Organic Microorganism Research Center, Gyeonggi-do Agricultural Research & Extension Services Gyeonggi Gwangju, 12805, Korea)
• 최준영(경기도농업기술원 친환경미생물연구소) | Jun-Yeong Choi (Organic Microorganism Research Center, Gyeonggi-do Agricultural Research & Extension Services Gyeonggi Gwangju, 12805, Korea)
• 이찬중(국립원예특작과학원 버섯과) | Chan-Jung Lee (Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA Chungbuk Eumseong 27709, Korea)
• 하태문(경기도농업기술원 친환경미생물연구소) | Tai-Moon Ha (Organic Microorganism Research Center, Gyeonggi-do Agricultural Research & Extension Services Gyeonggi Gwangju, 12805, Korea)
• 임갑준(경기도농업기술원 친환경미생물연구소) | Gab-June Lim (Organic Microorganism Research Center, Gyeonggi-do Agricultural Research & Extension Services Gyeonggi Gwangju, 12805, Korea)