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World of CitrusWorld of CitrusParson Brown Sweet Orange
University of California, Riverside — Citrus Variety Collection
https://citrusvariety.ucr.edu/crc3873 (opens in a new tab)
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Gary K. England; Manjul Dutt · Citrus Industry Magazine · 2021-10-04
https://citrusindustry.net/2021/10/04/the-past-and-potential-of-parson-brown/ (opens in a new tab)
Article by England and Dutt. Its history distinguishes five Brown seedlings and later Parson Brown clones. Of about 15 clones registered in the 1950s–60s, it says F-56-2 remained at publication; it also says Carney-block selections 3-37-6 and 3-40-2 were collected in 1983 and considered likely related, and that CO2 and CO3 entered the program in 2015 (lines 37–44). It reports enhanced growth and fruit retention in commercial Parson Brown blocks at four locations versus adjacent Hamlin, with no significant difference in CLas titer and better canopy density/lower dieback (lines 46–50). Mechanisms remain unresolved (lines 54–58); this does not establish identity or HLB tolerance across every clone.
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USDA APHIS Citrus ID, Edition 2 · 2011-10
https://idtools.org/citrus_id/index.cfm?packageID=1179&entityID=8739 (opens in a new tab)
Citrus ID entry, Edition 2, October 2011. Lines 50–53 attribute the historical account to Hodgson (1967) and separately reproduce Chiefland Budwood Facility (2010) notes for clone F-56-2, including a seedling-selection account involving Mort Cohen and a 1955 UF grove. Lines 55–62 provide the Hodgson cultivar description and separate F-56-2 fruit/season notes. Do not treat the F-56-2 account as the origin of every historical Parson Brown clone; the entry's taxonomic hybrid classification is not adopted here.
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University of Florida IFAS; Florida Department of Agriculture and Consumer Services, Division of Plant Industry, Bureau of Citrus Budwood Registration · 1995
http://www.ultimatecitrus.com/Story/varieties/parson.html (opens in a new tab)
The supplied page is attributed to UF/IFAS and the Florida Department of Agriculture and Consumer Services, Division of Plant Industry, Bureau of Citrus Budwood Registration (1995). The retrieved full indexed entry reports average diameter 2½–2¾ inches, 10–20 seeds per fruit, and October–January harvest; it also describes a Hughes seedling selection. These are published reference values, not a new measured sample, and the selection should remain distinct from the historical Carney tree.
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Citrus Australia · 2005-12
https://citrusaustralia.com.au/wp-content/uploads/Parson-brown-sml.pdf (opens in a new tab)
Citrus Australia fact sheet, last revised December 2005. PDF page 1 reports clone 29-3 released from Australian quarantine in 1988; field trials planted in 1997 at Waikerie, Griffith, Leeton and Dareton on Troyer citrange, sweet orange and Poncirus rootstocks; and says long-term performance remained to be assessed (lines 24–34). It reports 47% average juice content from July measurements over three seasons at Dareton (lines 15–18). These Australian site/trial summaries are not Florida or Riverside measurements.
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Herbert J. Webber; Walter T. Swingle · U.S. Department of Agriculture, Yearbook of Agriculture · 1905
Webber and Swingle, “New Citrus Creations of the Department of Agriculture,” reprinted from the Yearbook of Agriculture 1904 and published in 1905. Printed p. 238 (PDF p. 43) identifies Parson Brown pollen in a reported Dancy cross; printed p. 240 (PDF p. 51) says adventive embryos could not be ruled out and the parentage could not be determined from observed characters.
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William S. Castle and James C. Baldwin · Proceedings of the Florida State Horticultural Society · 2010
Castle and Baldwin, Proc. Fla. State Hort. Soc. 123:78–81 (2010), report one unreplicated Basinger, Florida planting of PB-S-F-56-2-XE on 19 rootstocks, with yields measured over nine seasons (1992–93 through 2000–01). Rootstock-specific outcomes are confined to that clone and planting; no statistical comparison of means was performed. ResearchGate full text was consulted. The supplied FLVC link confirms the same work; the CABI item could not be verified as a separate work.
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Lamiaa M. Mahmoud, Katherine R. Weber, Tony Trama, Gary England, and Manjul Dutt · HortScience · 2023
https://doi.org/10.21273/HORTSCI17241-23 (opens in a new tab)
Mahmoud et al., HortScience 58(10):1149–1160 (2023), compare Parson Brown and Hamlin in eight Florida groves, with variable blocks, clones, and rootstock histories. Publisher-indexed article text was retrieved; the publisher page/PDF did not open directly. Results describe sampled-site observations, not a randomized single-rootstock trial or proof of immunity; this study overlaps the earlier CRDF project report.
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George W. Garcelon (Part I); B. M. Lelong (Part II) · Sacramento: A. J. Johnston, Superintendent of State Printing · 1891
https://archive.org/details/citrusfruits00cali (opens in a new tab)
Part II by B. M. Lelong; Parson Brown account at printed pp. 20–21 (PDF pp. 24–25). Describes an 1891 California report and qualitative fruit/tree observations, including Lelong's attribution of unusually deep color to red soil. Historical report; not an accession-wide measurement.
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