Incongruity in the interspecific crosses of Vitis L. Morphological abnormalities in the F2 progeny

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

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The F2 generation of interspecific crosses of Vitis were examined for symptoms of incongruity, manifested as morphological abnormalities in the seedlings. Dwarfing, achlorophyllic variegation, deformed leaves, yellow mottling, sparse roots, and enation were documented. Most comparisons between classed of crosses were significantly different. The V. riparia x V. vinifera class exhibited the greatest frequency of abnormalities, the V. riparia x V. riparia class displayed the lowest frequency of abnormalities, and the highly-intercrossed V. riparia x French Hybrid class demonstrated an intermediate frequency of abnormal plants. When incongruity was viewed as a syndrome, or collection of symptoms, differences between classed were consistently evident. The highly-intercrossed nature of the French Hybrid ancestry appears to have been responsible for attenuating incongruity.

Original languageEnglish (US)
Pages (from-to)227-237
Number of pages11
JournalEuphytica
Volume78
Issue number3
DOIs
StatePublished - Jan 1 1994

Keywords

  • Vitis spp.
  • grapes
  • hybrid breakdown
  • incongruity
  • interspecific barriers
  • interspecific hybridization

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