Search for new naturally occurring strains of Pleurotus from Argentina to improve yields. P. albidus as a novel proposed species for mushroom production

BERNARDO E. LECHNER; EDGARDO ALBERTÓ

REVISTA IBEROAMERICANA DE MICOLOGIA

ASOCIACION ESPANOLA MICOLOGIA-AEM

Lugar: Londres; Año: 2011 vol. 28 p. 148 - 154

1130-1406

Yield values and morphological variations of fruiting bodies obtained from the cultivation of fourteen Pleurotus strains isolated from naturally occurring specimens from Argentina were tested on supplemented Salix sawdust, wheat straw and supplemented wheat straw. The species studied were Pleurotus albidus, P. cystidiosus, P. djamor, P. ostreatus and P. pulmonarius. The strains were tested at different temperatures on Nobles? medium. The maximum rate growth was reached by strains of P. pulmonarius, P. albidus, and P. ostreatus. No relationship was found when optimal mycelium growth, incubation time and yields were compared. In general, wild strains had a good performance on W or SW. The highest yield was obtained with P. albidus on wheat straw (BE 171.3 %) which overcame in 82 % the yield obtained for the commercial strain in the same substrate. When morphological variations were analyzed for each species, significant differences were found among strains. It was also possible to find a strain of P. ostreatus with better BE than the commercial strain assayed. We propose the study of naturally occurring species as a useful practice to improve yields and to preserve germplasm of fungal species. The high BE obtained on SW and easy cultivation techniques indicate that P. albidus could be an interesting species for commercial production.