Abstract: Methods of producing hybrid Agaricus bisporus mushrooms strains derived or descended from at least one wild mushroom strain and having the specified traits of either greatly diminished sporulation or an absence of sporulation, and of obtaining postmeiotic offspring of nonsporlating basidiomycete fungi including Agaricus bisporus, are disclosed.

Abstract: Methods of producing hybrid Agaricus bisporus mushrooms strains derived or descended from at least one wild mushroom strain and having the specified traits of either greatly diminished sporulation or an absence of sporulation, and of obtaining postmeiotic offspring of nonsporlating basidiomycete fungi including Agaricus bisporus, are disclosed.

Abstract: A composition and method for the formulation of ingredients for a medium for growing fungi and the like. The invention provides for a formulation of a growing medium including oat hulls for the cultivating of mushroom mycelium.

Abstract: A method for the production of high proportions of homokaryons among spores from breeding stock of the mushroom Agaricus bisporus includes the steps of providing a first strain of Agaricus bisporus having tetrasporic ancestry and which carries a gene or genes that determines the trait for production of basidia which predominantly bear at least three spores rather than two, and crossing the first strain of Agaricus bisporus with a second, different strain of Agaricus bisporus to form at least one hybrid heterokaryotic culture. The culture is capable of producing mushrooms having basidia which predominately bear at least three spores, many of which are homokaryotic. The homokaryons taken from the homokaryotic spores can be used in crosses to produce new hybrid strains of Agaricus bisporus mushrooms which may exhibit improvements with respect to various traits including productivity, rate of development, disease resistance, aesthetic qualifies and the like.

Abstract: A method for the production of high proportions of homokaryons among spores from breeding stock of the mushroom Agaricus bisporus includes the steps of providing a first strain of Agaricus bisporus having tetrasporic ancestry and which carries a gene or genes that determines the trait for production of basidia which predominantly bear at least three spores rather than two, and crossing the first strain of Agaricus bisporus with a second, different strain of Agaricus bisporus to form at least one hybrid heterokaryotic culture. The culture is capable of producing mushrooms having basidia which predominately bear at least three spores, many of which are homokaryotic. The homokaryons taken from the homokaryotic spores can be used in crosses to produce new hybrid strains of Agaricus bisporus mushrooms which may exhibit improvements with respect to various traits including productivity, rate of development, disease resistance, aesthetic qualities and the like.

Abstract: A method for the production of high proportions of homokaryons among spores from breeding stock of the mushroom Agaricus bisporus includes the steps of providing a first strain of Agaricus bisporus carrying a gene or genes which determines the trait for production of basidia which predominantly bear at least three spores rather than two, and crossing the first strain of Agaricus bisporus with a second, different strain of Agaricus bisporus.

Abstract: A new and unique variety of brown mushroom is described. It exhibits (1) high production yields when compared to common commercial varieties, (2) excellent Verticillium disease resistance and (3) a distinct electrophoretic isozyme pattern.