Selfreproduction induced variability in agronomic traits for a wild Agaricus bisporus

Consequences of selfreproduction (in- tramictic reproduction) were studied on a wild Agar- icus bisporus var. bisporus strain. Individual variations were observed on several agronomic traits, natural cap color, susceptibility to bacterial blotch, mycelial growth and yield, for each of the two studied intra- mictic generations. RAPD markers showed a high lev- el of recombination between intramictic generations. With all traits, the same level of transgression was ob- tained at each generation, with the exception of my- celial growth which dramatically increased in the first generation. Bacterial blotch susceptibility decreased, reaching a threshold, therefore resistance was not reached. Variability induced by intramictic reproduc- tion in A. bisporus could be integrated favorably in breeding programs.

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