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: 26 | History events: 0 | Catalog issue offerings: 0
Open profile JSON | Open lineage explorer | Open lineage JSON
Evidence Badge: emerging | claims=26 | sources=1 | contradictions=0
Claim Types: description_snippet:13, recommendation_context:3, anecdote_snippet:2, taxon_context:2, growth_habit:1, source_reference_abbreviation:1, storage_duration:1 | Open evidence summary JSON | Open citation drawer JSON
Connected Views: lineage table | lineage graph | history charts | trait matrix | search
Link Filter: showing signal links (candidate hidden); hidden candidate links=0. Show candidate links
Whittaker is listed as a plum, with one source identifying it as Prunus spp. and another row as Prunus munsoniana 'Whittaker' [S1].
In the University of Minnesota evaluation, Whittaker progeny showed high germination and vigorous seedling growth [S1]. Scarified greenhouse seed germination reached 91.7%, tied with La Crescent for the highest value reported in that comparison [S1]. Field-started seedlings also had the highest reported average initial height, 25.7 cm, among the plum cultivars measured [S1].
The same source reports 88% greenhouse survival and 92% field survival at the end of Experiment III [S1]. It also associates Whittaker with low to moderate herbivore pressure, limited suckering, high establishment, and a recommendation for further invasive-risk study focused on propagule pressure and seed dispersal [S1].
Summary source basis
This summary currently draws chiefly from Minnesota #1695.
Featured source descriptions
“Progeny from this cultivar are described as having high germination, vigorous seedling growth, low to moderate herbivore pressure, and limited suckering, indicating invasive potential.”
— [1]
“Among plum seedlings started in the field there was significant variation for average change in stem diameter with 'Whittaker' being significantly different than four different plums.”
— [1]
“Whittaker is reported at the upper end of field initial height among measured plum seedlings (25.7 cm), from Table 7.”
— [1]
“For scarified plum seed in the greenhouse environment, 'Whittaker' was reported at 91.7% average germination.”
— [1]
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 |
|---|---|---|---|---|---|---|---|
| 7 | Minnesota #1695 | unknown | 26 | 0 | 0 | p24 p46 p48 p49 p50 p61 p83 p86 | Named among plum cultivars explicitly highlighted as meriting additional investigation of invasive potential.; The cultivar should be prioritized for further invasive-risk work focused on propagule pressure and seed disp |
| Document | Page | Claim Type | Claim | Quote | Match |
|---|---|---|---|---|---|
| 7 | p125 | anecdote_snippet | Named among plum cultivars explicitly highlighted as meriting additional investigation of invasive potential. | future work should focus on other aspects of invasive risk (e.g. propagule pressure and dispersal mechanism) for the plum cultivars 'Hazel', 'Whittaker', 'Hennepin', and 'South Dakota' as well as all the tart cherry cult | page_block:0.90 |
| 7 | p125 | recommendation_context | The cultivar should be prioritized for further invasive-risk work focused on propagule pressure and seed dispersal mechanisms in future studies. | future work should focus on other aspects of invasive risk (e.g. propagule pressure and dispersal mechanism) for the plum cultivars 'Hazel', 'Whittaker', 'Hennepin', and 'South Dakota' as well as all the tart cherry cult | page_block:0.90 |
| 7 | p124 | description_snippet | Used to represent a high-risk Prunus entry in the conclusion synthesis. | P. munsoniana Wight and Hedrick 'Whittaker' ... demonstrated high germination percentages (>50%) in the field environments of Experiments Iand II and high seedling establishment in Experiment III, indicating a higher inv | page_block:0.90 |
| 7 | p124 | recommendation_context | Named as one of the few Prunus cultivars with stronger invasive-risk indicators (high field germination and high establishment). | P. munsoniana Wight and Hedrick 'Whittaker' ... demonstrated high germination percentages (>50%) in the field environments of Experiments Iand II and high seedling establishment in Experiment III, indicating a higher inv | page_block:0.90 |
| 7 | p97 | entry_hardiness_observation | For 'Whittaker', percent survival was 88 in greenhouse (Grhs.) and 92 in field at the end of Experiment III. | Plum 'Whittaker' 88 92 | page_block:0.90 |
| 7 | p93 | description_snippet | Herbivore rating reported as 3.5 (Tukey grouping marker bc). | Plum ... 'Whittaker' 3.5 bc | page_block:0.90 |
| 7 | p93 | taxon_context | Listed in the Plum section as Prunus spp. 'Whittaker'. | Plum ... 'Whittaker' 3.5 bc | page_block:0.90 |
| 7 | p91 | description_snippet | Table values indicate initial height 25.7 cm, initial stem diameter 2.15 mm, change in stem diameter 4.64 mm, and ΔTCA 36.89 mm². | P. munsoniana 'Whittaker' 25.7 a 2.15 ab 4.64 a 36.89 a | page_block:0.90 |
| 7 | p91 | taxon_context | Cultivar listed as plum-related taxon Prunus munsoniana 'Whittaker'. | P. munsoniana 'Whittaker' 25.7 a 2.15 ab 4.64 a 36.89 a | page_block:0.90 |
| 7 | p88 | source_reference_abbreviation | Contributes to Table 6 female-parent greenhouse metrics with the same unit set as adjacent rows. | P. munsoniana ‘Whittaker’ 49.7 ab 4.35 bc 1.14 7.49 | page_block:0.90 |
| 7 | p88 | entry_pedigree | Taxonomic context indicates this row is a plum species entry (P. munsoniana). | P. munsoniana ‘Whittaker’ 49.7 ab 4.35 bc 1.14 7.49 | page_block:0.90 |
| 7 | p88 | description_snippet | Prunus munsoniana 'Whittaker' is reported with values 49.7 ab, 4.35 bc, 1.14, and 7.49 for the listed metrics. | P. munsoniana ‘Whittaker’ 49.7 ab 4.35 bc 1.14 7.49 | page_block:0.90 |
| 7 | p86 | description_snippet | Appears in Table 5 continuation under plum cultivars. | Table 5: Continued ... 'Whittaker' 62.4 abc 75.0 a | page_block:0.90 |
| 7 | p86 | storage_duration | Plum 'Whittaker' germination was 62.4% at 25 months and 75.0% at 1 month in field storage treatment. | Table 5: Continued ... 'Whittaker' 62.4 abc 75.0 a | page_block:0.90 |
| 7 | p83 | description_snippet | Plum 'Whittaker' reports 62.5% non-scarified and 70.8% scarified germination, with average germination times 1.4 and 1.8 weeks. | Plum 'Whittaker' 62.5 abc 70.8 1.4 1.8 | page_block:0.90 |
| 7 | p61 | recommendation_context | Associated trait package is interpreted as potential for invasive behavior under suitable conditions. | Progeny from the plum cultivars P. americana ‘Hazel’, P. munsoniana ‘Whittaker’, and the hybrids ‘South Dakota’ and ‘Hennepin’ exhibited high germination, vigorous growth, moderate to low herbivore pressure, and produced | page_block:0.90 |
| 7 | p61 | anecdote_snippet | Moderate/low herbivore pressure and some root suckering were recorded for this cultivar, factors linked to invasive likelihood. | Progeny from the plum cultivars P. americana ‘Hazel’, P. munsoniana ‘Whittaker’, and the hybrids ‘South Dakota’ and ‘Hennepin’ exhibited high germination, vigorous growth, moderate to low herbivore pressure, and produced | page_block:0.90 |
| 7 | p61 | growth_habit | Progeny displayed vigorous growth in the establishment phase. | Progeny from the plum cultivars P. americana ‘Hazel’, P. munsoniana ‘Whittaker’, and the hybrids ‘South Dakota’ and ‘Hennepin’ exhibited high germination, vigorous growth, moderate to low herbivore pressure, and produced | page_block:0.90 |
| 7 | p61 | entry_hardiness_observation | High germination was observed in progeny from this entry. | Progeny from the plum cultivars P. americana ‘Hazel’, P. munsoniana ‘Whittaker’, and the hybrids ‘South Dakota’ and ‘Hennepin’ exhibited high germination, vigorous growth, moderate to low herbivore pressure, and produced | page_block:0.90 |
| 7 | p50 | description_snippet | Whittaker is referenced as a plum cultivar with single replications in Table 9. | Replications from Hazel and South Dakota, and single replications from Compass, Gracious, Monitor, and Whittaker (Table 9). | page_block:0.90 |
| 7 | p49 | description_snippet | Whittaker was in the greenhouse-sucker group: replications from Whittaker produced one or more root suckers, with fewer than four replications producing suckers. | 1.69 mm for seedlings from multiple cultivars to 4.64 mm for 'Whittaker' (Table 7). ... Among plum seedlings started in the field there was significant variation ... with 'Whittaker' being significantly different than fo | page_block:0.90 |
| 7 | p49 | description_snippet | Whittaker had high average field ATCA (36.89 mm2) and differed significantly from about half of the other plum cultivars for field ATCA. | 1.69 mm for seedlings from multiple cultivars to 4.64 mm for 'Whittaker' (Table 7). ... Among plum seedlings started in the field there was significant variation ... with 'Whittaker' being significantly different than fo | page_block:0.90 |
| 7 | p49 | description_snippet | Whittaker had high stem diameter change in the field relative to other plums; it was significantly different from four other plum cultivars in average change in stem diameter. | 1.69 mm for seedlings from multiple cultivars to 4.64 mm for 'Whittaker' (Table 7). ... Among plum seedlings started in the field there was significant variation ... with 'Whittaker' being significantly different than fo | page_block:0.90 |
| 7 | p48 | description_snippet | Whittaker is reported at the upper end of field initial height among measured plum seedlings (25.7 cm), from Table 7. | Average initial heights of plum seedlings started in the field ranged from 8.5 cm for seedlings from 'Mount Royal' to 25.7 cm for seedlings from 'Whittaker' (Table 7). | page_block:0.90 |
| 7 | p46 | description_snippet | Whittaker is tied at the top of scarified greenhouse germination at 91.7%. | The range in average % germination for plum cultivars' scarified seed in the greenhouse was 16.7% for Tecomseh to 91.7% for La Crescent and Whittaker. | page_block:0.90 |
| 7 | p24 | description_snippet | Plum cultivar Whittaker progeny are described as having high seed germination, vigorous seedling growth, low-to-moderate herbivore pressure, limited suckering, and indicated invasi | Progeny from the plum cultivars 'Hazel', 'Whittaker', 'South Dakota', and 'Hennepin' had high % germination, vigorous seedling growth, low to moderate herbivore pressure, and limited vegetative propagation via suckering, | 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 |
|---|---|---|
| anecdote_snippet | Named among plum cultivars explicitly highlighted as meriting additional investigation of invasive potential. | 0.95 |
| recommendation_context | The cultivar should be prioritized for further invasive-risk work focused on propagule pressure and seed dispersal mechanisms in future studies. | 0.87 |
| description_snippet | Used to represent a high-risk Prunus entry in the conclusion synthesis. | 0.93 |
| recommendation_context | Named as one of the few Prunus cultivars with stronger invasive-risk indicators (high field germination and high establishment). | 0.97 |
| entry_hardiness_observation | For 'Whittaker', percent survival was 88 in greenhouse (Grhs.) and 92 in field at the end of Experiment III. | 0.99 |
| description_snippet | Herbivore rating reported as 3.5 (Tukey grouping marker bc). | 0.96 |
| taxon_context | Listed in the Plum section as Prunus spp. 'Whittaker'. | 0.98 |
| description_snippet | Table values indicate initial height 25.7 cm, initial stem diameter 2.15 mm, change in stem diameter 4.64 mm, and ΔTCA 36.89 mm². | 0.97 |
| taxon_context | Cultivar listed as plum-related taxon Prunus munsoniana 'Whittaker'. | 0.99 |
| source_reference_abbreviation | Contributes to Table 6 female-parent greenhouse metrics with the same unit set as adjacent rows. | 0.95 |
| entry_pedigree | Taxonomic context indicates this row is a plum species entry (P. munsoniana). | 0.95 |
| description_snippet | Prunus munsoniana 'Whittaker' is reported with values 49.7 ab, 4.35 bc, 1.14, and 7.49 for the listed metrics. | 0.97 |
| description_snippet | Appears in Table 5 continuation under plum cultivars. | 0.99 |
| storage_duration | Plum 'Whittaker' germination was 62.4% at 25 months and 75.0% at 1 month in field storage treatment. | 0.97 |
| description_snippet | Plum 'Whittaker' reports 62.5% non-scarified and 70.8% scarified germination, with average germination times 1.4 and 1.8 weeks. | 0.96 |
| recommendation_context | Associated trait package is interpreted as potential for invasive behavior under suitable conditions. | 0.92 |
| anecdote_snippet | Moderate/low herbivore pressure and some root suckering were recorded for this cultivar, factors linked to invasive likelihood. | 0.93 |
| growth_habit | Progeny displayed vigorous growth in the establishment phase. | 0.95 |
| entry_hardiness_observation | High germination was observed in progeny from this entry. | 0.97 |
| description_snippet | Whittaker is referenced as a plum cultivar with single replications in Table 9. | 0.90 |
| description_snippet | Whittaker was in the greenhouse-sucker group: replications from Whittaker produced one or more root suckers, with fewer than four replications producing suckers. | 0.95 |
| description_snippet | Whittaker had high average field ATCA (36.89 mm2) and differed significantly from about half of the other plum cultivars for field ATCA. | 0.91 |
| description_snippet | Whittaker had high stem diameter change in the field relative to other plums; it was significantly different from four other plum cultivars in average change in stem diameter. | 0.95 |
| description_snippet | Whittaker is reported at the upper end of field initial height among measured plum seedlings (25.7 cm), from Table 7. | 0.97 |
| description_snippet | Whittaker is tied at the top of scarified greenhouse germination at 91.7%. | 0.99 |
| description_snippet | Plum cultivar Whittaker progeny are described as having high seed germination, vigorous seedling growth, low-to-moderate herbivore pressure, limited suckering, and indicated invasive potential in this summary. | 0.91 |
| ID | Type | Year | Label |
|---|---|---|---|
| No history events. | |||