Sources

Rubidoux trifoliate (opens in a new tab)

Givaudan Citrus Variety Collection at UCR

https://citrusvariety.ucr.edu/crc0838 (opens in a new tab)

Accessed September 18th

Rubidoux (opens in a new tab)

Citrus ID · October 2011 (Edition 2)

https://idtools.org/citrus_id/index.cfm?entityID=8786&packageID=1179 (opens in a new tab)

Citrus ID entry; synonyms Robidoux and Rubideaux are attributed to Cottin (2002). The Hodgson-derived origin and morphology text largely repeats the UCR Citrus Variety Collection account.

Accessed September 29th

Identification and Performance of Citrus Trees on Nucellar and Zygotic Rootstocks (opens in a new tab)

M.L. Roose; S.N. Traugh · Journal of the American Society for Horticultural Science · 1988

https://journals.ashs.org/downloadpdf/view/journals/jashs/113/1/article-p100.pdf (opens in a new tab)

Reports one Minneola tangelo scion on a zygotic Rubidoux-derived rootstock as smaller than the nucellar Rubidoux mean; that one tree's yield/canopy-volume cropping efficiency was 20% above the nucellar mean. This is a progeny/rootstock observation, not performance of the selected Rubidoux clone.

Accessed September 29th

Evaluation of strains of Poncirus trifoliata and trifoliate orange hybrids for resistance to Phytophthora root rot (opens in a new tab)

N.N. Raghavendra Rao; M.B.N.V. Prasad · Scientia Horticulturae · May 1983

https://www.sciencedirect.com/science/article/abs/pii/0304423883901140 (opens in a new tab)

Publisher-indexed abstract reports a qualitative high degree of resistance to Phytophthora root rot for Rubidoux trifoliate in an evaluation of 10 Poncirus strains and 6 trifoliate hybrids. Abstract only retrieved; no Rubidoux-specific count or numerical result.

Accessed September 29th

Further investigations on colonization of Poncirus trifoliata by the Asian citrus psyllid (opens in a new tab)

David G. Hall; Justin George; Stephen L. Lapointe · Crop Protection 72:112–118 · 2015

https://www.ars.usda.gov/ARSUserFiles/35403/Hall%20et%20al%202015%20Poncirus%20and%20ACP.pdf (opens in a new tab)

Hall et al. report accession-specific Asian citrus psyllid (ACP) colonization tests on seedling populations. Table 1 includes Poncirus trifoliata CRC 838 ‘Rubidoux’ (August 2013 free-choice greenhouse test), and Table 5 includes CRC 838 in no-choice tests on whole seedling plants with mature leaves removed or retained. These are experimental oviposition observations, not orchard-level HLB-control evidence; test populations may include nucellar seedlings and half-sib families.

Accessed September 29th

A Novel Gene Conferring Citrus Tristeza Virus Resistance in Citrus maxima (Burm.) Merrill (opens in a new tab)

D.Q. Fang and M.L. Roose · American Society for Horticultural Science · 1999-04

https://journals.ashs.org/downloadpdf/view/journals/hortsci/34/2/article-p334.pdf (opens in a new tab)

Fang and Roose, HortScience 34(2):334–335 (April 1999), DOI 10.21273/HORTSCI.34.2.334. Page 334 reports the named Rubidoux trifoliate-orange parent as CTV-resistant after six ELISA and two RT-PCR tests over two years. The paper describes Chandler × Rubidoux progeny and identifies Rubidoux as small-flowered. It gives no CRC 838, PI, or other accession number, so identity with the target accession is unconfirmed. This parent-cultivar test is not a rootstock-performance or field-immunity claim.

Accessed October 8th