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World of CitrusWorld of CitrusUFR-5
FFSP · 2014-05
https://www.ffsp.net/wp-content/uploads/2014/05/Citrus-Rootstock-Overview.pdf (opens in a new tab)
FFSP 2014 rootstock overview, UFR-5 page: White 4; tetraploid; high yield; low–medium HLB rating; potential Diaprepes/Phytophthora tolerance; small–medium tree; high fruit quality. Ratings are source-specific, not immunity claims; comparative data were limited.
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UF/IFAS Extension
https://ask.ifas.ufl.edu/publication/HS1260 (opens in a new tab)
UF/IFAS HS1260 5th-edition rootstock table: first commercial availability 2015; germination 80–90%; UFR-5 tree size intermediate and freeze tolerance intermediate. This guide entry is a source-specific selection aid, not an immunity claim.
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United States plant patent · Google Patents
https://patents.google.com/patent/USPP27298P3/en (opens in a new tab)
Patent source for UFR-5 breeding background. The patent source describes a sexual cross between the somatic-fusion parent [Nova + H.B. pummelo] and the somatic-fusion parent [Succari + Argentine trifoliate orange]. Parentage notation is preserved as source-reported; no legal-status claim is recorded.
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West Coast Agroforestry
Profile quotes group guidance attributed to an Albrecht et al. Florida 2024–25 rootstock guide: named rootstocks including UFR-5 produced good yields and lower-than-average fruit drop under high HLB pressure. Secondary group guidance only; no individual measurement, scion, trial setup, or disease-resistance rating. No verified byline or publication date.
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Ksenija Gasic; John E. Preece; David Karp · HortScience · 2020
https://doi.org/10.21273/HORTSCI50register-20 (opens in a new tab)
The UFR-5 description reports a tetraploid allotetraploid zygotic hybrid produced by crossing two prior somatic hybrids. The selection had 24–34 seeds per fruit and was described as polyembryonic and suitable for standard nursery propagation. No embryo-count denominator or zygotic rate is reported.
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