[{"source_document_id":112,"title":"Pollination Studies with Stone Fruits","url":"https://sherwoods-forests.com/Downloads/UMinnAgExpStation-Stone_Fruit-Pollenation.pdf","rights_status":"unknown","evidence_claim_count":7,"relationship_count":0,"history_event_count":0,"sample_snippets":["The author notes that in 16 varieties with Shiro as maternal parent, some account may need to be taken of blood pollinizers because Shiro itself is of complex origin and is rated only fair as a pollinizer.","Table 7 also summarizes four tested varieties derived from reciprocal crosses in which three varieties were crossed with Shiro as the male parent.","Table 7 summarizes 16 tested varieties derived from Shiro used as the female parent with eight different male parents.","Species/background appears to be listed as P. americana hybrid."]},{"source_document_id":1,"title":"New Hardy Fruits for the Northwest","url":"https://openprairie.sdstate.edu/cgi/viewcontent.cgi?article=1338&context=agexperimentsta_bulletins","rights_status":"unknown","evidence_claim_count":0,"relationship_count":1,"history_event_count":0,"sample_snippets":["relationship: cross_parent"]}]