Incongruity in the interspecific crosses of Vitis L. Reproductive expression in the F1 progeny

Debby M. Filler, James J. Luby, Peter D. Ascher

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

F1 progeny from three classes of crosses were studied for indications of incongruity in the form of reproductive dysfunction. Percent fruit set was found to be approximately equivalent to the additive inverse of percent aborted flowers, as the effect of shot berries was small and not significant. In interspecific crosses, barriers were manifested as reduced fruit set and seed number per berry. These two characters were used to create an index of reproductive efficiency. Nine F1s from crosses of most divergent class, V. riparia × V. vinifera (R × V), displayed significantly tower reproductive efficiency, percent fruit set, and seed number per berry. Four female F1s from the least divergent class, V. riparia × V. riparia (R × R), had the highest reproductive efficiency, percent fruit set and seed number per berry, when pollinated by two V. riparia pollen sources. Seventeen F1s from the highly-intercrossed class, V. riparia × French Hybrid (R × FH), displayed intermediate levels of reproductive efficiency, percent fruit set, and seed number per berry. The R × FH class involved V. vinifera, V. rupestris, V. aestivalis, V. labrusca, V. berlandieri, V. cinerea, and V. riparia. It is proposed that the complex intercrossing in the pedigrees of the R × FH class ameliorated incongruity. In the most divergent class, R × V, progenies of one of the V. riparia parents displayed fewer incongruity effects than progenies of the other V. riparia parents. Progeny testing of many proposed parental combinations may be used to uncover useful congruent combinations.

Original languageEnglish (US)
Pages (from-to)155-164
Number of pages10
JournalEuphytica
Volume78
Issue number1-2
DOIs
StatePublished - Jan 1994

Keywords

  • Vitis spp.
  • grapes
  • incongruity
  • interspecific barriers
  • interspecific hybridization
  • reproductive efficiency

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