Biography:Raymond Carl Jackson

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Short description: American botanist (1928–2008)

Raymond Carl Jackson (May 7, 1928, Medora, Indiana – April 7, 2008, Lubbock, Texas)[1] was an American botanist, known as Ray Jackson, noted "for his work in cytogenetics, particularly on polyploidy, and for his discovery of low chromosome numbers in angiosperms."[2]

Biography

After three years of service in the United States Army Air Forces , Jackson matriculated in 1949 at Indiana University,[3] where he graduated with bachelor's degree in 1952 and master's degree in 1953. In 1953 he became a graduate student at Purdue University, where he graduated in 1955 with Ph.D. in botany.[2] From 1955 to 1958 he was a faculty member and herbarium curator at the University of New Mexico. In New Mexico he studied the dessert annual Xanthisma gracile (synonym Haplopappus gracilis) and found that it has "n=2 chromosomes, the lowest number ever reported for a plant."[3]

From 1958 to 1971 he was a professor of botany at the University of Kansas, where in 1969 he was appointed chair of the botany department.[3] There he was also the chair of the interdepartmental Ph.D. program in genetics.[1] In 1971 Jackson become the chair of the department of biological sciences at Texas Tech University. There he resigned as chair in 1978, was appointed Paul Whitfield Horn Professor in 1980, became professor emeritus in 1997, and continued his research as Horn Professor Emeritus until he died in 2008.[1]

Jackson collected plants in the United States and Mexico. He began his Mexican collections in 1957 and continued through the 1970s.[2] In the 1970s he became a leading expert in cytogenetics and plant biosystematics.[3]

In the 1980’s Ray became an authority on chromosome pairing behavior in polyploids, proposing and testing models based on random synapsis and non-random distribution of chiasmata. He modified and applied these models to diploids, triploids, and tetraploids through octoploids. He also proposed similar models for predicting meiotic behavior in translocation heterozygotes.[3]

In 1947, in Brownstown, Indiana, he married Thelma June Snyder (b. 1929); they had a son and a daughter.[1]

Eponyms

Selected publications

  • Jackson, R. C. (1953). A Cytotaxonomic Study of Four Perennial Sunflowers: Helianthus mollis, H. doronicoides, H. tomentosus, and H. resinosus. Indiana University; 76 pp. 
  • Jackson, R. C. (1959). "A Study of Meiosis in Haplopappus gracilis (Compositae)". American Journal of Botany 46 (7): 550–554. doi:10.1002/j.1537-2197.1959.tb07049.x. 
  • Jackson, R. C. (1959). "Two New Species of Helianthus from New Mexico". Madroño 15 (2): 54–57. 
  • Li, Ning; Jackson, R. C. (1961). "Cytology of Supernumerary Chromosomes in Haplopappus spinulosus ssp. cotula". American Journal of Botany 48 (5): 419–426. doi:10.1002/j.1537-2197.1961.tb11660.x. 
  • Jackson, R. C. (1962). "Interspecific Hybridization in Haplopappus and Its Bearing on Chromosome Evolution in the Blepharodon Section". American Journal of Botany 49 (2): 119–132. doi:10.1002/j.1537-2197.1962.tb14917.x. 
  • Jackson, R. C. (1963). "Variation in the Short Arm of Chromosome B of Haplopappus gracilis". Canadian Journal of Genetics and Cytology 5 (4): 421–426. doi:10.1139/g63-059. ISSN 0008-4093. 
  • Jackson, R. C. (1965). "A Cytogenetic Study of a Three-Paired Race of Haplopappus gracilis". American Journal of Botany 52 (9): 946–953. doi:10.1002/j.1537-2197.1965.tb07270.x. 
  • Stucky, Jon; Jackson, R. C. (1975). "DNA Content of Seven Species of Astereae and Its Significance to Theories of Chromosome Evolution in the Tribe". American Journal of Botany 62 (5): 509–518. doi:10.1002/j.1537-2197.1975.tb14077.x. 
  • Jackson, R. C.; Jordan, R. G. (1975). "Haploidy in Haplopappus gracilis (N = 2)". American Journal of Botany 62 (6): 628–632. doi:10.1002/j.1537-2197.1975.tb14093.x. 
  • Arnold, M. L.; Jackson, R. C. (1978). "Biochemical, Cytogenetic and Morphological Relationships of a New Species of Machaeranthera sect. Arida (Compositae)". Systematic Botany 3 (2): 208. doi:10.2307/2418314. 
  • Jackson, R. C. (1979). "Intersectional Hybridization in Haplopappus: Blepharodon x Hazardia". Systematic Botany 4 (2): 157–162. doi:10.2307/2418853. 
  • Jackson, R. C.; Dimas, Calixto T. (1981). "Experimental Evidence for Systematic Placement of the Haplopappus phyllocephalus Complex (Compositae)". Systematic Botany 6 (1): 8–14. doi:10.2307/2418630. 
  • Jackson, R. C.; Hauber, Donald P. (1982). "Autotriploid and Autotetraploid Cytogenetic Analyses: Correction Coefficients for Proposed Binomial Models". American Journal of Botany 69 (4): 644–646. doi:10.1002/j.1537-2197.1982.tb13303.x. 
  • Jackson, R. C.; Casey, Jane (1982). "Cytogenetic Analyses of Autopolyploids: Models and Methods for Triploids to Octoploids". American Journal of Botany 69 (4): 487–501. doi:10.1002/j.1537-2197.1982.tb13284.x. 
  • Jackson, R. C. (1982). "Polyploidy and Diploidy: New Perspectives on Chromosome Pairing and Its Evolutionary Implications". American Journal of Botany 69 (9): 1512–1523. doi:10.1002/j.1537-2197.1982.tb13400.x. 
  • Jackson, R. C.; Murray, B. G. (1983). "Colchicine induced quadrivalent formation in Helianthus: evidence of ancient polyploidy". Theoretical and Applied Genetics 64 (3): 219–222. doi:10.1007/BF00303768. ISSN 0040-5752. PMID 24264948.  (See colchicine.)
  • Jackson, R. C. (1985). "Genomic Differentiation and Its Effect on Gene Flow". Systematic Botany 10 (4): 391–404. doi:10.2307/2419133. 
  • Jackson, R. C. (1985). "Mitotic Instability in Haplopappus: Structural and Genic Causes". American Journal of Botany 72 (9): 1452–1457. doi:10.1002/j.1537-2197.1985.tb08403.x. ISSN 0002-9122. 
  • Jackson, R. C. (1988). "A Quantitative Cytogenetic Analysis of an Intersectional Hybrid in Helianthus (Compositae)". American Journal of Botany 75 (5): 609–614. doi:10.1002/j.1537-2197.1988.tb13484.x. PMID 30139082. 
  • Jackson, R. C.; Hauber, Donald P. (1994). "Quantitative cytogenetic analyses of autoploid and alloploid taxa in the Helianthus ciliarisgroup (Compositae)". American Journal of Botany 81 (8): 1063–1069. doi:10.1002/j.1537-2197.1994.tb15595.x. 
  • Jackson, R. C.; Jackson, Jeff W. (1996). "Gene segregation in autotetraploids: Prediction from meiotic configurations". American Journal of Botany 83 (6): 673–678. doi:10.1002/j.1537-2197.1996.tb12756.x. 
  • Jackson, R. C.; Skvarla, J. J.; Chissoe, W. F. (2000). "A unique pollen wall mutation in the family Compositae: Ultrastructure and genetics". American Journal of Botany 87 (11): 1571–1577. doi:10.2307/2656732. PMID 11080106. 
  • Jackson, R. C.; Ngo, N.; Ngo, H. (2002). "Chromosome-specific desynapsis in the n = 2 race of Haplopappus gracilis (Compositae)". American Journal of Botany 89 (5): 777–782. doi:10.3732/ajb.89.5.777. PMID 21665677. 
The standard author abbreviation R.C.Jacks. is used to indicate this person as the author when citing a botanical name.[4]

References

  1. ↑ 1.0 1.1 1.2 1.3 "Dr. Raymond Carl Jackson 1928–2008". https://www.legacy.com/amp/obituaries/tribtown/107305074. 
  2. ↑ 2.0 2.1 2.2 "Jackson, Raymond Carl". https://plants.jstor.org/stable/10.5555/al.ap.person.bm000003998. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Hauber, Don (Fall 2008). "Obituary. R. C. Jackson (1928–2008)". Plant Science Bulletin 54 (3): 108–109. https://botany.org/PlantScienceBulletin/PSB-2008-54-3.pdf. 
  4. ↑ IPNI,  R.C.Jacks., http://www.ipni.org/ipni/advAuthorSearch.do?find_abbreviation=R.C.Jacks. 

External links



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