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느타리버섯과 사철느타리버섯의 종간 원형질체융합 균주의 특성
박용환,유영복,유창현,고승주,변명옥,Peberdy, John F. 한국균학회 1984 韓國菌學會誌 Vol.12 No.4
Interspecific heterokaryons were obtained between auxotrophic mutants of Pieurotus ostreatus and Pleurotus florida by polyethylene glycol-Ca^(++) induced fusion of somatic protuplasts. The fusion products produced colonies of dense growing mycelium after 10-14 days culture on hypertonic Mushroom Minimal Medium. When they were transferred to Mushroom Minimal Medium plates, the sectors showed normal vegetative morphology but the colonies of irregular shape varied in growth rate. All of the colonies produced fruit body of normal pilei. Some heterokaryon colonies bearing none or only a small amounts of basidiospores were isolated. Fusion products, generally, gave higher basidiocarp yields than the parents.
박용환,신관철,고승주,변명옥 한국균학회 1984 韓國菌學會誌 Vol.12 No.1
Some factors affecting the protoplast release from mycelia of Plurotus ostreatus using commercial lytic enzymes were investigated. The highest yields of the protoplast were obtained from four days old mycelia grown in mushroom complete medium. The solution of 0.8M MgSO₄ or KCl showed good results as the osmotic stabilizer for releasing the protoplast. Novozym 234 was the most effective among commercials tested. The concentration of the enzyme and pH of the enzyme solution were optimal at 15㎎/㎖ and 5.5∼6.0 for the protoplast release, respectively. Mycelial digestion was optimal at about 28℃ and was better in the reciprocal shaking bath (75 oscillations/min) than the stationary culture.
박용환,신관철,유창현,변명옥 한국균학회 1981 韓國菌學會誌 Vol.9 No.3
Two hundred forty seven isolates obtained from 21 white or cream-colored mushroom strain by single spore isolation or multiple spore germination were compared type of mycelial growth in vitro and yield trial in a preliminary test. As a result of these tests, four isolates were selected and compared the yields of sporophores with those of 505 and 702 which are leading strains in mushroom production. The newly selected isolate No. 705 showed high yield of mushroom with good quality as described below. 1. The isolate No. 705 produced 13% more mushrooms than those from the strain No. 703. Both produced creamy type of mushroom. The isolate No. 705 showed high blanching yield ratio and moderate resistance to Mycogone perniciosa. 2. For the isolate No. 705 obtained by multiple spore germinations, the optimum temperature of mycelial growth was 25℃, also the mycelial growth was better at 15℃ than others, optimum moisture content of the compost was 65% and optimum casing soil pH for mycelial growth was 7.8. 3. The new isolate No. 705 produced more number of sporophores and the ratio between parts of sporophores were intermediate of those from the strains No. 505 and No. 703.
박용환,유창현,고승주,변명옥 한국균학회 1984 韓國菌學會誌 Vol.12 No.2
This experiment was performed to select the mast suitable species of oyster mushroom for cultivation during summer season in Korea. The selection was made based upon mycelial growth on the ricestraw substrates, fruiting under hot weather conditions during the summer season in Korea and potential high productivity using six cultures from South-east Asia. The newly selected strain of Pleurotus sajor-caju (ASI 2070) grew well on the rice straw substrates and produced the higher yields of sporophores than other cultures tested. The primordia of the mushroom were formed between 10 to 35℃. The optimal temperature for fruiting ranged from 20 to 25℃.