The heritability of methyl anthranilate and total volatile esters in <i>Vitis</i> spp. hybrids

  • K. H. Fisher
  • T. Fuleki
  • A. G. Reynolds
Keywords: genetics, heritability, flavour, methyl anthranilate, volatile esters, biometry, sensory rating, breeding


Two grapevine seedlings, V. 72181 and V. 72182, selected for extremely high methyl anthranilate (MA) and total volatile esters (TVE) content, were selfed to create families 8020 and 8021 respectively, to test the inheritance of these two components of labrusca flavour character. REYNOLDS et al. (1982) had postulated a three-gene, dominant and complementary system (M, A, F) for MA and a two-gene dominant and complementary system (T, V) for TVE. Families 8020 and 8021 segregated 3:1 for MA, indicating only one heterozygous locus for MA in the parents. This would question REYNOLDS' assignment of genotypes for the grandparents of these two families and would suggest a more complex environmentally influenced system. The TVE segregation patterns followed REYNOLDS' hypothesis and segregated 3:1 for one heterozygous locus.
Section 2: Genetic improvement of grapevine form or function