Sexuality in the Edible Mushrooms

Although the process of sexuality is complicated by nutritional and physiological conditions, genetic constitution is the most critical factor determining both the occurrence and the morphology of the fruiting bodies in the edible mushrooms. Sexuality in fungi consists of three important stages.  The first essential stage is plasmogamy which is the fusion of cytoplasm of the two mating individuals. By plasmogamy the nuclei from two strains are brought together in a common cytoplasm. The second essential stage in sexuality is known as karyogamy or nuclear fusion. The third  essential stage is meiosis, the nuclear division in which the chromosome number is reduced from the diploid to the haploid number. The product of meiosis is the formation of a tetrad. Through the process of sexuality, genetic recombination and segregation subsequently occurs.




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