Volume 10 Part 1 Article 17: Variation in the Homothallic Basidiomycete, Volvariella volvacea

Volume 10 Part 1 Article 17
Year 1979
Title: Variation in the Homothallic Basidiomycete, Volvariella volvacea
Authors: Sui-Fong Li and Shu-Ting Chang

Abstract:

Volvariella volvacea (Bull. ex Fr.) Sing, belongs to the family Pluteaceae Kotl. & Pouz. of the Basidiomycetes (Singer, 1975). It is an edible fungus familiar to all Southeast Asians, and has been cultivated in China since the 18th century (Chang, 1977). It is the third most important cultivated edible fungus, making up about 4% of the total world production of edible mushrooms (Delcaire, in press). Except for the research of Chang and Yau (1970, 1971) and Graham (1975), the breeding of this fungus has received scant attention. The earlier literature available about Volvariella emphasizes its cultivation, while its morphology (Singer, 1961; Chang, 1965, Chang and Yau, 1971), cytology (Chang, 1969; Chang and Yau, 1969a; Juliano, 1969; Chang and Wong, 1976), and physiology (Atacador Ramos, 1965; Impens, 1967; Chang and Chu, 1969b; Chang and Yau, 1970; Chang and Chan, 1973) have only recently been reported. During the course of studying monosporous isolates of straw mushrooms obtained from different Southeast Asian countries, a wide range of variations was revealed by the continuous appearance of new colonial morphology of mycelial cultures, different mycelial growth rates and differences in self-fertility. The present study provides information concerning variations of these characteristics, which are considered essential m a attempt to evaluate the maxi mum potential variation of the fungus, and in the establishment of a suitable experimental procedures for strain improvement.

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