ALBERTO edgardo Omar
Search for new naturally occurring strains of Pleurotus to improve yields. P. albidus as a novel proposed species for mushroom production
LECHNER B. E.; ALBERTÓ E.
REVISTA IBEROAMERICANA DE MICOLOGIA
ASOCIACION ESPANOLA MICOLOGIA-AEM
Año: 2011 vol. 28 p. 148 - 154
Background: The species of genus Pleurotus are worldwide cultivated.Aims: To evaluate growth, yield production andmorphological variations of fruiting bodies obtained from the cultivation of fourteen naturally occurring Pleurotus strains isolated from Argentina.Methods: The strains growthwas tested at different temperatures onNoblesmedium. Substrates assayed were: supplemented Salix sawdust, supplemented and non supplemented wheat straw. The species studied were Pleurotus albidus, Pleurotus cystidiosus, Pleurotus djamor, Pleurotus ostreatus and Pleurotus pulmonarius.Results: Themaximumrate growthwas reached by strains of P. pulmonarius, P. albidus, and P. ostreatus.No relationshipwas foundwhen optimalmyceliumgrowth, incubation time and yieldswere compared. The highest yield was obtained with P. albidus on wheat straw (biological efﬁciency 171.3%) which overcame in 82% the yield obtained for the commercial strain in the same substrate.Whenmorphological variations were analyzed for each species, signiﬁcant differences were found among strains. It was also possible to ﬁnd a naturally occurring strain of P. ostreatuswith better biological efﬁciency than the commercial strain assayed.Conclusions: We propose the study of naturally occurring strains as a useful practice to improve yields of species of Pleurotus. Due to the high biological efﬁciency obtained we propose P. albidus as a new species for commercial production.