Peer Reviewed Publications


QTL associated with resistance to Stagonosporopsis citrulli in Citrullus amarus.

Adams, L. and C. McGregor (2022) Scientific Reports 12(1): 19628

CuGenDBv2: an updated database for cucurbit genomics

Yu J, Wu S, Sun H, Wang X, Tang X, Guo S, Zhang Z, Huang S, Xu Y, Weng Y,  Mazourek M, McGregor C, Renner SS, Branham S, Kousik C, W Wechter WP, Levi A, Grumet R, Yi Z, Fei Z (2022) Nucleic Acids Research, 2022; gkac921

Persistent and asymptomatic virus infections are common along with whitefly-transmitted viruses impacting cantaloupe and watermelon in Georgia, USA

Adeleke IA, Kavalappara SR, McGregor C, Srinivasan R, Bag S (2022) Viruses 14, 1310.

First report of watermelon crinkle leaf-associated virus 1 naturally infecting watermelon (Citrullus lanatus) in Georgia, USA

Adeleke IA, Kavalappara SR, Torrance T, Bennett JE, McGregor C, Srinivasan R, Bag S (2022) Plant Dis. 106:8, 2273

Field Evaluation of Cucurbita Germplasm for Resistance to Whiteflies and Whitefly-transmitted Viruses

Luckew A, Meru G, Wang Y-Y, Mwatuwa R, Paret M, Carvalho R, Kalischuk M, Ribeiro da Silva ALB, Candian J, Dutta B, Srinivasan R, Kavalappara SR, RRD NCK, Bag S, McGregor C (2022) HortScience 57:337-344


A Contrast of Three Inoculation Techniques used to Determine the Race of Unknown Fusarium oxysporum f.sp. niveum Isolates

Fulton JC, Cullen MA, Beckham K, Sanchez T, Xu Z, Stern P, Vallad G, Meru G, McGregor C, Dufault NS (2021) J Vis Exp. (176).

Genetic Resources and Vulnerabilities of Major Cucurbit Crops

Grumet R, McCreight JD, McGregor C, Weng Y, Mazourek M, Reitsma K, Labate J, Davis A, Fei Z (2021) Genes 12:1222

High Throughput Sequencing-Aided Survey Reveals Widespread Mixed Infections of Whitefly-Transmitted Viruses in Cucurbits in Georgia, USA

Kavalappara SR, Milner H, Konakalla NC, Morgan K, Sparks AN, McGregor C, Culbreath AK, Wintermantel WM, Bag S (2021) Viruses 13:988

First report of cucurbit chlorotic yellows virus in association with other whitefly-transmitted viruses in squash (Cucurbita pepo) in Georgia

Kavalappara SR, Milner H, Sparks A, McGregor C, Wintermantel WM, Bag B (2021) Plant Disease


Effect of Various Soil Media on Disease Severity of Fusarium Wilt in Watermelon

Meru G, McGregor C (2020) American Journal of Plant Sciences 11(12): 1890-1898.

QTL associated with gummy stem blight resistance in watermelon

Gimode W, Bao K, Fei Z, McGregor C (2020) Theoretical and Applied Genetics 134(2): 573-584.

A genome-wide analysis of the pentatricopeptide repeat (PPR) gene family and PPR-derived markers for flesh color in watermelon (Citrullus lanatus)

Subbura S, Tu L, Lee K, Park G-S, Lee H, Chun J-P, Lim Y-P, Park M-W, McGregor C, Lee G-Joo (2020) Genes 11: 1125

Genetic Diversity and Pedigree Analysis of Muscadine Grape Using SSR Markers.

Cao S, Stringer S, Gunawan G, McGregor C, Conner PJ (2020)  J. Amer. Soc. Hort. Sci. 145:143-151

Markers for Selection of Three Alleles of ClSUN25-26-27a (Cla011257) Associated with Fruit Shape in Watermelon

Legendre, R., Kuzy, J. & C. McGregor (2020) Molecular Breeding 40:19.

Fine-Mapping of a Major Quantitative Trait Locus Qdff3-1 controlling flowering time in watermelon

Gimode, W., Clevenger, J., & McGregor, C.  (2020) Molecular Breeding 40:3.

A Comparison of 13 Sweet Pepper Varieties under an Organic Farming System

Boyhan GE, McGregor C, O’Connell S, Biang J, Berle D (2020) HortTechnology 30:135-143


Resistance Response of Citrullus Genotypes to Stagonosporopsis spp. Isolates Causing Gummy Stem Blight

Gimode, W., Lonnee, M., & McGregor, C.  (2019) Cuc. Gen. Coop Rep 42

Chromosomal Locations and Interactions of Four Loci Associated With Seed Coat Color in Watermelon

Paudel, L., Clevenger, J., & McGregor, C.  (2019) Frontiers in Plant Science 10: 788

QTLs associated with flesh quality traits in an elite x elite watermelon population

Fall, L. A., Perkins-Veazie, P., & McGregor, C. (2019) Euphytica 215:30

Inter- and Intracultivar Variation of Heirloom and Open-pollinated Watermelon Cultivars

Stone, S., Boyhan, G., & McGregor C. (2019) HortScience 54(2):212–220

Genome of ‘Charleston Gray’, the principal American watermelon cultivar, and genetic characterization of 1,365 accessions in the U.S. National Plant Germplasm Systemwatermelon collection

Wu S, Wang X,; Reddy U, Sun H, Bao K, Gao L, Mao L, Patel T, Ortiz C, Abburi V, Nimmakayala P, Branham S, Wechter P, Massey L, Ling K-S, Kousik S, Hammar S, Tadmor, Y, Portnoy, V, Gur, A, Katzir, N, Guner, N, Davis, A, Hernandez A, Wright C, McGregor C, Jarret R, Zhang X, Xu Y, Wehner T, Grumet R, Levi, A & Z Fei (2019) Plant Biotechnology Journal 17, pp. 2246–2258.

Genetic architecture of fruit size and shape variation in cucurbits: a comparative perspective.

Pan, Y., Wang., Y., McGregor, C., Liu, S., Luan, F., Gao, M., & Y. Weng (2020)  Theoretical and Applied Genetics 133:1-21

Whole genome resequencing of watermelons to identify single nucleotide polymorphisms related to flesh color and lycopene content

Subburaj, S., Lee, K., Jeon, Y., Tu, L., Son, G., Choi, S., Lim, Y-P., McGregor, C. & G-J Lee (2019) PLOS ONE 14(10): e0223441

Refining of the egusi locus in watermelon using KASP assays

Paudel, L., Clevenger, J., & McGregor, C.  (2019) Scientia Horticulturae 257: 108665


Quantitative Trait Loci Associated with Fatty Acid Content of Watermelon Seed

Meru, G. and C. McGregor (2014) J. Amer. Soc. Hort. Sci. 139:433-441

An integrated Genetic Map based on Four Mapping Populations and Quantitative Trait Loci Associated with Economically Important Traits in Watermelon (Citrullus lanatus)

Ren Y, McGregor C, Zhang Y, Gong G, Zhang H, Guo S, Sun H, Cai W, Zhang J, Xu Y (2014) BMC Plant Biol 14:33

Flowering Patterns of Pollinizer and Triploid Watermelon Cultivars

McGregor CE, Waters V (2014) HortScience 49:714-721

Flowering time in watermelon is associated with a major quantitative trait locus on chromosome 3

McGregor CE, Waters V, Vashisth T, Abdel-Haleem H (2014) J. Amer. Soc. Hort. Sci. 139:48-53


Pollen viability of F1 hybrids between watermelon cultivars and disease resistant, infra-specific crop wild relatives.

McGregor CE, Waters V (2013) HortScience 8:1428-1432

Genetic mapping of seed traits correlated with seed oil percentage in watermelon.

Meru G, McGregor C (2013) HortScience 48:955-959

Quantitative trait loci associated with sex expression in an inter-subspecific watermelon population.

Prothro J, Abdel-Haleem H, Bachlava E, White C, Knapp S, McGregor C (2013) J. Amer. Soc. Hort. Sci. 138:125-130

A non-destructive genotyping system from a single seed for marker-assisted selection in watermelon.

Meru G, McDowell D, Waters V, Seibel A, Davis J, McGregor C (2013)  Gen Mol Res 12:702-709


Citrullus lanatus germplasm of Southern Africa.

McGregor CE (2011) Isr J Plant Sci 60:403 – 413

Main and epistatic quantitative trait loci associated with seed size in watermelon.

Prothro J, Sandlin K, Abdel-Haleem H, Bachlava E, White W, Knapp S, McGregor C (2012) J. Amer. Soc. Hort. Sci. 137:452–457

Mapping of the egusi seed trait locus (eg) and quantitative trait loci associated with seed oil percentage in watermelon.

Prothro J, Sandlin K, Gill R, Bachlava E, White V, Knapp S, McGregor C (2012)  J. Amer. Soc. Hort. Sci. 137:311-315

Comparative mapping in watermelon [Citrullus lanatus (Thunb.) Matsum. et Nakai].

Sandlin KC, Prothro JM, Heesacker AF, Khalilian N, Okashah R, Xiang W, Bachlava E, Caldwell D, Seymour D, White V, Chan E, Tolla G, White C, Safran D, Graham E, Knapp SJ, McGregor CE (2012) Theor Appl Genet 125:1603-1618

The disease reactions of heirloom bell pepper ‘California Wonder’ to Phytophthora capsici.

Candole BL, Waters V, McGregor CE & PJ Conner (2012)  Agricultural Sciences 3: 417-424.

Transcriptome profiling of female alates and egg-laying queens of the Formosan subterranean termite.

Husseneder C, McGregor C, Lang RP, Collier R, Delatte J (2012) Comparative Biochemistry and Physiology Part D: Genomics and Proteomics 7:14-27


Genotypic and phenotypic variation among pepper accessions resistant to Phytophthora capsici.

McGregor C, Waters V, Nambeesan S, MacLean D, Candole BL, Conner P (2011) HortScience 46:1235-1240


Differential expression of genes between storage roots of sweetpotato cultivars ‘Jewel’ and ‘White Jewel’.

McGregor CE, LaBonte DR (2006) J. Amer. Soc. Hort. Sci. 131:798-805

The effect of sweet potato virus disease and its viral components on gene expression levels in sweetpotato.

Kokkinos CD, McGregor CE, Clark CA, LaBonte DR (2006) J. Amer. Soc. Hort. Sci. 131:657-666


The effects of replicate number and image analysis method on sweetpotato [Ipomoea batatas (L.) Lam.] cDNA microarray results.

McGregor CE, He L, Ali RM, Sosinski B, Jankowicz J, Burg K, LaBonte DR (2005) Plant Molecular Biology Reporter 23:367-381


Analysis of the wild potato germplasm of the series Acaulia with AFLPs: Implications for ex situ conservation.

McGregor CE, van Treuren R, Hoekstra R, van Hintum TJL (2002) Theor Appl Genet 104:146-156


A comparative assessment of DNA fingerprinting techniques (RAPD, ISSR, AFLP and SSR) in tetraploid potato (Solanum tuberosum L.) germplasm.

McGregor CE, Lambert CA, Greyling MM, Louw JH, Warnich L (2000) Euphytica 113:135-144

The use of simple sequence repeats (SSRs) to identify commercially important potato (Solanum tuberosum L.) cultivars in South Africa.

McGregor CE, Greyling MM, Warnich L (2000) South African Journal of Plant and Soil 17:177-179

Book Chapter


Botany and physiology: Storage root formation and development, p. 13-26. In: G. Loebenstein and G. Thottappilly (eds.), The Sweetpotato.

Firon, N, LaBonte D, Villordon A, McGregor C, Kfir Y, & E Pressman (2009) Botany and Physiology: Storage Root Formation and Development. In: The sweetpotato, Loebenstein, G. and Thottappilly, G (eds.) p. 13-26

Popular Publications


Technology to improve the quality of sweetpotato ‘seed’.

Clark, C.A., D.R. LaBonte, R.A. Valverde, M.W. Hoy, P. Lotrakul, C. Kokkinos, and C. McGregor. 2003.
Louisiana Agriculture 46(4): 29 – 31.

Other publications


DNA fingerprinting of sweetpotato Ipomoea batatas (L.) Lam.: Two case studies in Africa.

McGregor C, Greyling M, Banda J, Laurie S (2001)  Acta Horticulturae 546

Genetic diversity and its relation to habitat range of Protea coronata, P. holosericea and P. neriifolia as determined by RAPDs.

McGregor CE, Greyling MM, Robyn A, Littlejohn GM (2001) Acta Horticulturae 545