Taxon ID:
Usage Facet: class=edible; edible_score=1.0; ornamental_score=0.0; inferred_from_taxon=no
Relationships: 0 | Linked Entities (visible): 0 | Evidence claims: 5 | History events: 0 | Catalog issue offerings: 0
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Evidence Badge: emerging | claims=5 | sources=1 | contradictions=0
Claim Types: flavor_profile:1, fruit_color:1, release_year_reference:1, source_reference_abbreviation:1 | Open evidence summary JSON | Open citation drawer JSON
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Gamma is a University of Saskatchewan Prunus introduction from the Sapa x Oka breeding line. The prairie cultivar index records it as a Saskatchewan selection with a 1950 year reference.[S1] A later University of Saskatchewan introductions bulletin lists it as selection C59-353, describes it as a Sapa x Oka seedling from mixed open pollinations, and says it was introduced in 1960.[S3] This places Gamma in the prairie breeding program that produced dark fruited sand cherry plum and cherry plum type material for western Canadian testing.[S1][S3]
The fruit was described as slightly oblate, with skin so dark it was called almost black, and with very dark red flesh.[S3] Saskatchewan table data gives the fruit a diameter of about 1 to 1 1/8 inches, with deep purple color, medium thick tender skin, dark purple juicy flesh, a sweet flavor, and good dessert quality.[S2] Together, the sources describe a small, very dark, sweet plum type fruit selected for fresh eating rather than for ornamental use alone.[S2][S3]
The sources do not add notes on tree habit, cropping, disease, storage, or season for Gamma.[S1][S2][S3] They do place it clearly in the University of Saskatchewan's mid century prairie breeding work, alongside other named selections from the same parent line.[S1][S3] Sources place its release in 1950 or 1960: the earlier year appears in the prairie index, while 1960 is the stated introduction year in the University of Saskatchewan release list.[S1][S3]
Summary source basis
This summary currently draws chiefly from hortfacts_1976_3.pdf, with 2 additional supporting sources linked below.
Featured source descriptions
“Skin described as medium thick and tender; flesh as dark purple and juicy.”
— [3]
“Tested primarily in Zones 4 and 5, where it showed moderate to severe winter injury.”
— [3]
“Flavor listed as sweet.”
— [3]
“Dessert quality listed as good.”
— [3]
Direct parent cultivars
Parentage claim text
Derived or downstream cultivar links
Source-story quotations
Taxonomy context: No family-tree context surfaced yet.
Related cultivars mentioned in source context
Zone assertions are structured rows. Hardiness claim text appears in evidence claims and page-linked citations.
| Zone Min | Zone Max | Zone Text | Assertion Type | Outcome | Location | Confidence |
|---|---|---|---|---|---|---|
| No explicit zone assertion rows yet. | ||||||
No linked media assets.
| Document | Title/URL | Rights | Claims | Relationships | History Events | Pages | Snippets |
|---|---|---|---|---|---|---|---|
| 109 | University of Saskatchewan fruit introductions 1959-1960 | unknown | 5 | 0 | 0 | p8 | Fruit described as sweet and of good quality.; Fruit described as slightly oblate, with skin almost black and flesh very dark red.; Year introduced: 1960.; Parentage listed as Sapa x Oka; mixed open pollinations. |
| Document | Page | Claim Type | Claim | Quote | Match |
|---|---|---|---|---|---|
| 109 | p8 | flavor_profile | Fruit described as sweet and of good quality. | C59-353 Gamma Sapa x Oka Mixed open pollinations 1960 Slightly oblate, skin almost black, flesh very dark red, sweet and of good quality. | page_block:0.90 |
| 109 | p8 | fruit_color | Fruit described as slightly oblate, with skin almost black and flesh very dark red. | C59-353 Gamma Sapa x Oka Mixed open pollinations 1960 Slightly oblate, skin almost black, flesh very dark red, sweet and of good quality. | page_block:0.90 |
| 109 | p8 | release_year_reference | Year introduced: 1960. | C59-353 Gamma Sapa x Oka Mixed open pollinations 1960 Slightly oblate, skin almost black, flesh very dark red, sweet and of good quality. | page_block:0.90 |
| 109 | p8 | entry_pedigree | Parentage listed as Sapa x Oka; mixed open pollinations. | C59-353 Gamma Sapa x Oka Mixed open pollinations 1960 Slightly oblate, skin almost black, flesh very dark red, sweet and of good quality. | page_block:0.90 |
| 109 | p8 | source_reference_abbreviation | Introduction number C59-353. | C59-353 Gamma Sapa x Oka Mixed open pollinations 1960 Slightly oblate, skin almost black, flesh very dark red, sweet and of good quality. | page_block:0.90 |
| Year | Nursery | Catalog Issue | Relation |
|---|---|---|---|
| No catalog issue offerings linked. | |||
| Relation | Type | ID | Label |
|---|---|---|---|
| No linked entities at this filter level. | |||
| Type | Claim | Confidence |
|---|---|---|
| flavor_profile | Fruit described as sweet and of good quality. | 0.98 |
| fruit_color | Fruit described as slightly oblate, with skin almost black and flesh very dark red. | 0.99 |
| release_year_reference | Year introduced: 1960. | 0.99 |
| entry_pedigree | Parentage listed as Sapa x Oka; mixed open pollinations. | 0.99 |
| source_reference_abbreviation | Introduction number C59-353. | 0.96 |
| ID | Type | Year | Label |
|---|---|---|---|
| No history events. | |||