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Walter

SpeciesShare of its ancestry traced back to each wild grape species, through the most probable parents. Unknown: lines no source traces back.
  • V. vinifera38%
  • V. labrusca25%
  • Unknown25%
Origin
1850 · Caywood, Andrew Jackson

Origins

The most probable parents of Walter, and what each source says.

ParentsDNA-confirmedA DNA (marker) study confirmed this parent.Sources agreeTwo or more sources name this parent, without DNA proof.One source onlyOnly one source names this parent.⚠ Sources disagreeSources name different parents, or a DNA test did not confirm the stated one.UnknownNo source names this parent.

Mother (seed parent)
DelawareSources agree

VIVC names Delaware; Chateau Stripmine agrees

Father (pollen parent)
DianaSources agree

VIVC names Diana; Chateau Stripmine agrees

Most probable recent ancestors of Walter. Fainter lines are less certain links. Click a variety for details.Full family tree →
What each source says (2 sources)

✓ matches the most probable parent · ✓ ⇄ same parent, but listed as the other parent · ≈ described only by species, consistent · – this source doesn't know this parent, no conflict · ≠ names a different one · struck through = not confirmed by a DNA test.

SourceMother (seed parent)Father (pollen parent)Basis
VIVC
VIVC passport #13197 ↗		Delaware Diana Catalogue record
Original wording

DELAWARE

DIANA

Chateau Stripmine
A. J. Caywood — crosses list ↗		Delaware Diana Compiled list (original sources not recorded)
Original wording

Listed on A. J. Caywood — crosses list: seed parent Delaware, pollen parent Diana.

Row as shown on the site: Walter · Delaware · Diana · V · Rouge

Chateau Stripmine compiles many publications without recording which one each line comes from, so its agreement counts for less than an independent genebank.

Sources checked: VIVC: gives a pedigree · Chateau Stripmine: gives a pedigree · USDA GRIN: not found

Breeding records
Breeder
Caywood, Andrew Jackson — VIVC
Breeder
Caywood, A. J. — Chateau Stripmine
Year crossed
1850 — VIVC
Stated pedigree
DELAWARE X DIANA — VIVC

Species ancestry

Walter's ancestry is traced back to wild species for about 75%; the rest is unknown.

  • V. vinifera38%
  • V. labrusca25%
  • V. aestivalis13%
  • Father unknown (open-pollinated)25%

How certain is the whole lineage?Covers every generation back to wild species, not just the parents: each part of the lineage counts its weakest link.Sources agree all the way: Traced to wild species through links where sources agree (or DNA confirms).Includes a one-source link: Traced through at least one link given by a single source.Father unknown (open-pollinated): Reaches a seedling whose father is unknown (open-pollinated).

Following every line of Walter's ancestry back to wild species: about 25% rests on sources that agree (no DNA proof somewhere); about 50% relies on a single source somewhere; about 25% can't be traced (unknown parent or open-pollinated).

  • Sources agree all the way25%
  • Includes a one-source link50%
  • Father unknown (open-pollinated)25%

OffspringOur database holds the varieties our winegrowers grow and all their ancestors. These are the descendants we know of, not every variety ever bred from this one.

2 varieties were bred directly from Walter; counting their own offspring, 29 descendants over 9 generations.

Descendants grown by our winegrowersEvery variety descended from Walter, at any generation, that at least one winegrower in our data grows. Ranked by number of winegrowers.

Generation · number of winegrowers growing it

Bred directly from it (2)

  • Delaware × WalterOne source only
    as father · × Delaware
1 more
  • pollen mixture: Delaware / WalterOne source only
    as father · × Delaware
Lines from Walter leading to varieties our winegrowers grow. Click a variety for details.Full descendant tree →

Sources

Pedigree data for Walter combines these sources: