GENETICS OF A TUBER-AESTIVUM POPULATION (ASCOMYCOTINA, TUBERALES)

A truffle population with of Tuber aestivum and Tuber uncinatum morpho types was subjected to allozyme analysis via SGE and genotypically sco red at fourteen loci. Ten of the loci were monomorphic and four polymo rphic. Thus, seventeen new genotypic classes, with very low genetic di fferentiation, were found. However, heterozygosity was never found and all alleles seem to be fixed in individuals. These results indicate t hat Tuber aestivum and T. uncinatum are probably two extreme morpholog ical forms of a complex of self-fertilizing sibling species.