New lentinula edodes strain K48 and breeding method thereof
A new strain and strain technology, applied in botany equipment and methods, horticulture, application, etc., can solve the problems of over-density, unstable transformants, low expression rate, etc., and achieve the effect of improved production traits and obvious mutagenic effect
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[0033] 1. Materials and methods
[0034] 1.1 Materials
[0035] 1.1.1 Parental strains
[0036] Shiitake 135 (introduced by Sanming Fungi), Shiitake 939 (introduced by Sanming Fungi), 303 (crossbreeding by our company), JL-2 (introduced from Japan).
[0037] 1.1.2 Medium
[0038] Test medium: PDA+20% fungus chaff boiled juice.
[0039] Mutation medium: PDA+0.1% colchicine.
[0040] Cultivation medium: miscellaneous sawdust 83%, bran 15%, sugar 1%, gypsum 1%.
[0041] 1.1.3 Main reagents
[0042] Colchicine (C22H25NO 5 ): 98% content, analytically pure, imported by Shanghai Huishi Biochemical Reagent Company.
[0043] Fluorescent dye: Hoechst33258 (trade name), bisbenzimidazole (C 25 h 24 N 5 o 13HCL) chemical name, imported from Switzerland.
[0044] 1.2 Method
[0045] 1.2.1 Single spore isolation
[0046] On December 15, 2004, the fruiting bodies (eight mature) of Lentinus edodes 135 and 303 were collected respectively, placed in a bell-type spore collector, cu...
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