Abstract: The intraspecific cross of Vitis amurensis Rupr. and the interspecific cross, back cross and recrossing between Vitis amurensis Rupr. (VA) and Vitis vinifera L. (VV). were carried out from 1973 to 1998 and a heredity law of fruit mature period was analysed for 5 639 plants survived out of 34 hybrid combinations of five crossingmodels. The sequence from p remature to latermaturity ofmature period of five crossingmodels was VA ×VA≥(VA ×VV) F₁ ×VA≥VA ×VV≥ (VA ×VV) F1 ×(VA ×VV) F1 ≥ (VA ×VV) F₁ × VV. The fruitmature period showed a continuous distribution and a propensity to premature parents. The more
premature parents were in crossing combinations the more hybrid progenies were separated. From the premature gene was a quantitative character inheritance controlled by multigene and showed a cumulative response
and a dominant inheritance to p rogenies.

Key words: Vitis amurensis Rupr., Crossing, Mature period, Heredity