Grupos de interesterilidad y productividad de cepas de Pleurotus de regiones tropicales y subtropicales de México

the intersterility groups pleurotus djamor, p. pulmonarius, p. ostreatus were identified in a mexican wild strain collection through crossing the strains with reference monosporics and dikarion - monokarion. due to lack of reference strains or the similarity between compatibility alleles, p. levis, p. agaves and p. smithii were identified by phylogenetic analysis of ribosomal dna its1-5.8s-its2 region sequences. the strains were cultivated on coffee pulp in order to evaluate its productivity and describe the variety in form, size, color, texture and flavor of the fresh basidiomes. in relation to productivity it was found six strains of p. djamor with early fructification (12 days) and five with outstanding productivity (116-178% of biological efficiency). one strain of p. pulmonarius showed a continued productivity (non intermittent) and other two with excellent productivity (110-140% of be). the p. smithii and p. agaves strains did not show fructification to 26°c.