Genetics of a Tuber aestivum population (Ascomycotina, Tuberales)

Abstract

A truffle population with of Tuber aestivum and Tuber uncinatum morphotypes was subjected to allozyme analysis via SGE and genotypically scored at fourteen loci. Ten of the loci were monomorphic and four polymorphic. Thus, seventeen new genotypic classes, with very low genetic differentiation, were found. However, heterozygosity was never found and all alleles seem to be fixed in individuals. These results indicate that Tuber aestivum and T. uncinatum are probably two extreme morphological forms of a complex of self-fertilizing sibling species.