합성배지(合成培地)를 이용(利用)한 팽나무버섯의 자실체(子實體) 형성(形成) -제삼보(第三報). 환경적(環境的) 특성(特性)에 관하여-

Fruit-body Formation of Flammulina velutipes on the Synthetic Medium -Part 3. Environmental Characteristics-

합성배지(合成培地)에서 팽나무버섯균(菌)의 균사생육(菌絲生育)과 자실체형성(子實體形成)에 대한 환경적(環境的) 특성(特性)을 검토(檢討)하였다. 균사생육(菌絲生育)은 광조사(光照射)에 의하여 저해(沮害)되었으나 자실체형성(子實體形成)은 촉진(促進)되었으며, 자실체형성(子實體形成)을 위한 광(光)의 최적조도(最適照度)는 $100{\sim}1000lux$이고, 이때의 조사시간(照射時間)은 매일 $4{\sim}8$시간이었다. 균사생육(菌絲生育)과 자실체형성(子實體形成)의 최적온도(最適溫度)는 각각 $25^{\circ}C,\;15^{\circ}C$이었으며 최적(最適) pH 범위(範圍)는 각각 $5.0{\sim}7.5,\;5.0{\sim}6.0$이었다. 저온처리(低溫處理)에 의한 균사체형성(菌絲體形成)은 $15^{\circ}C$에서는 12시간, $5^{\circ}C$와 $19^{\circ}C$는 48시간이었으며, $15^{\circ}C$에서 더 효과적(效果的)이었다. 균사(菌絲)는 $7{\sim}10$일간(日間) 배양(培養)했을 때가 자실체형성(子實體形成)과 수율(收率)이 좋았다.

Environmental effects of light. temperature, and pH of culture media on mycelial growth and fruit-body formation of Flammulina velutipes in synthetic media were investigated. Illumination inhibited mycelial growth, but illumination during the latter part of vegetative growth induced primordia formation. The optimum light intensity and exposure time were $100{\sim}1000$ lux and $4{\sim}8$ hours per day, respectively. High intensity of light was injurous, and in darkness primordia developed into very poor fruit-bodies. The optimum temperature was $25^{\circ}C for mycelial growth and $15^{\circ}C$ for fruit-body formation. The optimum pH range for mycelial growth was found to be from 5.0 to 7.0 and for fruit-body formation from 5.0 to 6.0. In low temperature treatments, a temperature of $15^{\circ}C$ was more effective than $5^{\circ}C\;or\;10^{\circ}C$, it took about 12 hours for primordium formation, but at $5^{\circ}C\;or\;10^{\circ}C$ about 48 hours. The most excellent fruit-body formation were produced from the mycelium growth for 7 to 10 days.