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GENETIC ANALYSIS OF CRYOPHILIC AND MESOPHILIC WINE YEASTS
Author(s) -
Kusewicz Danuta,
Johnston John
Publication year - 1980
Publication title -
journal of the institute of brewing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.523
H-Index - 51
eISSN - 2050-0416
pISSN - 0046-9750
DOI - 10.1002/j.2050-0416.1980.tb03950.x
Subject(s) - homothallism , heterothallic , wine , ascospore , polyploid , mesophile , biology , tetrad , spore , strain (injury) , yeast , food science , botany , ploidy , genetics , bacteria , mating type , gene , anatomy
Ascospore genetic analysis, predominantly tetrad analysis, was performed upon 4 cryophilic and one mesophilic wine yeasts. Four strains appear to be homothallic; one may be heterothallic and polyploid. No segregation for the cryophilic character was obtained in 2 strains amenable to tetrad analysis. Overall, around 9% of ascospore cultures produced faster fermentations in laboratory‐scale tests. Pilot‐scale and industrial‐scale trials gave promising results for the commercial use of 2 spore culture strains and one hybrid strain in the production of fruit wines.