초록

눈꽃동충하초의 대량 인공재배를 위한 배양적 특징을 조사하기 위하여 기본실험을 수행하였다. 공시 배지로는 액체, 고체의 MYG(Malt yeast glucose) 배지를 이용하였고 균사생장은 $23{\sim}27^{\circ}C$의 범위의 온도에서 비교적 좋은 생장률을 나타내었으며 최적 온도는 $25^{\circ}C$, pH는 7.0에서 가장 좋은 생장을 나타내었다. 자실체 형성을 위한 부산물로서 번데기가루, 한약찌꺼기 등이 적합하였고, 눈꽃동충하초의 대량생산을 위한 간편한 방법으로서 일반 누에번데기를 균현탁액과 gelatin을 혼합한 용액을 접종원으로 이용하여 접종한 후, 배양하였을 때 우수한 자실체 형성을 보여 주었다.

Abstract

To obtain basic data for mass production of Isaria japonica, cultural characteristics of japonica were investigated by using liquid, solid media and silkworms pupa. Mycelia grew favorably at the temperature of $23{\sim}28^{\circ}C$ on MYG medium with pH 7.0. The fruiting-body of I. japonica was induced below $20^{\circ}C$ in MYG liquid medium (Malt yeast glucose) under fluorescent light. In MYG basal medium mixed with pupal powder of silkworms, the fresh weight of fruiting-bodies was increased with increasing concentration of pupal powder. The highest yield of fruiting bodies was obtained in carbon-rich medium supplemented with pupal powder of silkworm. Also, fruiting-bodies of I. japonica were produced massively on the silkworm pupa placed on the stainless tray in the shortest time. The structure and shape of fruiting-bodies were coral-like, many-branched types with numerous conidiospores.

주제어

#Cultivation   #Fruiting-body   #Isaria japonica   #Pupal powder  

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