航天诱变丝球小奥德蘑获得优良菌株

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Space induced Oudemansiella apalosarca to obtain excellent strain

YU Fengchun'， GAO Qi2 ，WEI Sai， YANDong，SONG Shuang，LIU Yu，ZONGXianchun'，WANG Shouxian

（1.SchoolofieddngalUeitjonn PlantProtection，BeijingAcademyofAgricultureandForestrySciences，Beijingooo97，China）

Abstract：Oudemansiellaapalosarca，arareedible fungus withhighnutritional value，faces theissueofpooruniformity in fruiting bodystipes，necessitating strain improvement.Inthisstudy，spacemutationbreeding technologywasemploed to induce mutations in themyceliumof O .apalosarca strains，withanon-mutated strain servingasthe control（CK）.Continuous subculture tests，fruiting tests，myceliumevaluation，andagronomic traitasessment wereconductedtoanalyze the mutationdirection，stability，andfruiting performanceof themutantstrainsduringsubculturing.Theresultsindicated that six aerospace mutant strains（HK）demonstrated stable antagonistic variation against CK，with growth diferences diminishing withincreasedsubculturing.Agronomic traitsofsixstablemutantHKstrainswereassessed，revealingthatthe space mutation strain HK26 exhibited stable antagonistic variation，a 46.50% higher biological efficiency than CK，reducedfruitingtimeby5days，andimproveduniformityoffruitingbodystipes，making itsuitableforindustrialproduction.Inconclusion，throughthecombinationof space mutation breeding technologyandagronomictrait evaluation，the excellentstrainHK26withhighyieldandgoodstipeuniformitywassuccesullyselected.This method presentsaneffective approach for breeding and advancing the industrial application of O. apalosarca.

Keywords：Oudemansiellapalosarca;Spacemutationbreeding;Stipeuniformity;Succesivestability;Evaluationof agronomic character

我国食用菌生产方式主要为传统食用菌生产和工厂化栽培两种。（剩余8860字）