Professor R Neil Jones

Professor Emeritus
Photograph of Professor R Neil Jones.


Office: 2.14, Edward Llwyd Building, Penglais
Phone: 01970 622230


Leverhulme Research Grant

Teaching Areas

BS22820 Human Genetics


Molecular cytogenetics of plants: including genome organisation and evolution; supernumerary B chromosome systems and their potential applications; physical mapping of plant chromosomes and introgression breeding for stress tolerance genes; meiosis, meiotic mutants in rye and tracking the early events of homology search.

Additional Interests

Research Collaborations

University of Vilnius
University of St. Petersburg
Tallinn University of Biotechnology
Technical University of Lisbon
IPK Gatersleben, Germany
Kyoto University, Japan

Staff Publications


1.    Rees H, Jones RN. 1977. Chromosome Genetics. Edward Arnold, pp.viii + 151. (Talking Books for the Blind edition,1985).

2.    Jones RN, Rees H. 1982. B-Chromosomes.  Academic Press, pp. viii + 266.

3.    Jones RN, Karp A. 1986. Introducing Genetics. John Murray, pp. x + 325. (reprinted 1988, 1990, 1993, 1994, 1996).

4.    Jones RN, Rickards GK. 1991. Practical Genetics. John Wiley & Sons, pp.228. (reprinted 1992).

5.   Jones RN, Karp A, Giddings GD.  2001. The Essentials of Genetics.  John Murray, pp. X + 278. (New edition of Introducing Genetics).


Papers (* = chapters in books, conference proceedings, review articles)

1.    Jones RN, Rees H. 1966. Chiasma frequencies and the potential genetic variability of Lolium populations.  Nature  211: 432-433.

2.    Jones RN, Rees H. 1967. Genotypic control of chromosome behaviour in rye. XI. The influence of B-chromosomes on meiosis. Heredity  22: 333-347.

3.    Rees H, Jones RN. 1967. Structural basis of quantitative variation in nuclear DNA. Nature  216: 825- 826.

4.    Jones RN, Rees H. 1968. The influence of B-chromosomes upon the nuclear phenotype in rye. Chromosoma  24: 158-176.

5.    Jones RN, Rees H. 1968. Nuclear DNA variation in Allium. Heredity 23: 591-605.

6.   Lints FA, Jones RN. 1969. Effect of heterochromatin on the relationship between nuclear DNA content and chromosome volume. Heredity  24: 147-151.

7.    Jones RN, Rees H. 1969. An anomalous variation due to B-chromosomes in rye. Heredity 24: 265-271.

8.    Kirk D, Jones RN. 1970. Nuclear genetic activity in B-chromosome rye, in terms of the quantitative interrelationships between nuclear protein, nuclear RNA and histone. Chromosoma  31: 241-254.

9.    John PCL, Jones RN. 1970. Molecular heterogeneity of soluble proteins and histones in relationship to the presence of B-chromosomes in rye. Experimental Cell Research  63: 271-276.

10.  *Rees H, Jones RN. 1971. Chromosome gain in higher plants. In: Cellular Organelles and Membranes in Mental Retardation. Benson,P.F., Ed., Churchill Livingstone, pp. 185-208.

11.  *Rees H, Jones RN. 1972. The origin of the wide species variation in nuclear DNA content. International Review of Cytology 32: 53-92.

12.  Flannagan TW, Jones RN. 1973. The influence of some environmental factors upon the chromosome phenotype in meristematic cells of rye. Cytologia 38: 11-19.

13.  Kirk DJ, Jones RN. 1974. Quantitative nuclear variation in inbred lines and hybrid rye. Heredity 32: 357-373.

14.  *Jones RN. 1975. B-chromosome systems in flowering plants and animal species. International Review of Cytology  40: 1-100.

15.  Timmis JN, Ingle J, Sinclair J, Jones RN. 1975. The genomic quality of rye B-chromosomes. Journal of Experimental Botany  26: 367-378.

16.  *Jones RN. 1976. Genome organisation in higher plants. Chromosomes Today 5,117-130. Proceedings of the 5th International Chromosome Conference, Leiden 1974.

17.  Brown LM. Jones RN. 1976. B-chromosome effects at meiosis in Crepis capillaris. Cytologia 41: 493-506.

18.  Jones RN, Brown LM. 1976. Chromosome evolution and DNA variation in Crepis. Heredity 36: 91-104.

19.  Teoh SB, Jones RN. 1978. B-chromosome selection and fitness in rye. Heredity  41: 35-48.

20.  *Jones RN. 1981. Widespread occurrence of B-chromosomes. Bionature  1: 67-73.

21.  Jones RN, Jenabzadeh P. 1981. Variation in self-fertility, flowering time and inflorescence production in inbred lines of Lolium perenne L. Journal of Agricultural Science Cambridge. 96: 521-537.

22.  Matthews RB, Jones RN. 1982. Dynamics of the B-chromosome polymorphism in rye. I. Simulated populations. Heredity  48: 345-369.

23.  Karp A, Jones RN. 1982. Cytogenetics of Lolium perenne Part 1.Chiasma frequency variation in inbred lines. Theoretical and Applied Genetics  62: 177-183.

24.  *Jones RN. 1983. Cytogenetic evolution in the genus Allium. In: Cytogenetics of Crop Plants. Swaminathan,M.S., Gupta,P.K. and Sinha,U., Eds., Macmillan, Chapter 18: 517-554.

25.  Karp A, Jones RN. 1983a. Cytogenetics of Lolium perenne Part 2. Chiasma distribution in inbred lines.Theoretical and Applied Genetics  64: 137-145.

26.  Karp A, Jones RN. 1983b. Cytogenetics of Lolium perenne Part 3. Correlation between chiasmata and U-type exchange. Theoretical and Applied Genetics  65: 149-156.

27.  Matthews RB, Jones RN. 1983. Dynamics of the B-chromosome polymorphism in rye. II. Estimates of parameters. Heredity  50: 119-137.

28.  *Jones RN, Matthews RB. 1983. Selfish B-chromosomes in rye. Kew Conference  II: 183-190.

29.  *Jones RN. 1985. Are B-chromosomes selfish?  In: The Evolution of Genome Size. Cavalier-Smith,T., Ed., John Wiley and Sons, Chapter 13, 397-425.

30.  *Jones RN. 1985.  B-chromosomes. McGraw-Hill Yr Bk of Science and Technology, pp. 115 -117.

31.  *Jones RN, Karp A. 1985.  "Jumping genes" in maize. J. UCW Agricultural Soc. 65: 79 -108.

32.  Hague LM, Jones RN. 1987. Cytogenetics of Lolium perenne Part 4. Colchicine-induced variation in diploids. Theoretical and Applied Genetics  74: 233-241.

33.  Jones RN, Vij SP. 1988. B-chromosomes in Orchids. J. Orchid Soc. India  2: 77-85.

34.  Francis A, Jones RN. 1989. Heritable nature of colchicine-induced variation in diploid Lolium perenne. Heredity  62: 407-410.

35.  Hassan L, Jones RN, Posselt UK. 1989.  A novel source of genetic variation in ryegrasses (Lolium multiflorum, L. perenne). Heredity  63: 339-342.

36.  *Jones RN. 1990. Cytogenetics. In: Onions and Allied Crops, Vol.I Botany, Physiology, and Genetics. Rabinowitch,H.D. and Brewster,J.L., Eds., CRC Press Inc, Chap 10, 199-214.

37.  Francis A, Jones RN, Parker JS, Posselt UK. 1990. Colchicine-induced heritable variation in cell size and chloroplast number in leaf mesophyll cells of diploid ryegrass (Lolium perenne L.). Euphytica 49: 49-55.

38.  *Jones RN. 1990.  Novel genetic variation in ryegrasses. J. UCW Agric. Soc. 70: 53-66.

39.  Sandery MJ, Forster JW,  Blunden R, Jones RN. 1990. Identification of a family of repeated sequences  on the rye B-chromosome. Genome 33: 908-913.

40.   Hassan L, Jones, RN, Parker JS, Posselt UK. 1991. Colchicine-induced heritable variation in cell size and chloroplast number in the leaf cells of inbred ryegrasses (Lolium perenne, L. multiflorum). Euphytica  52: 39-45.

41.  Sandery MJ, Forster JW, Macadam SR, Blunden R, Jones RN, Brown SDM. 1991. Isolation of a sequence common to A-andB-chromosomes of rye (Secale cereale) by microcloning. Plant Molec.Biol.Reporter 9:21-30.

42.  *Jones RN. 1991. Cytogenetics of B-chromosomes in crops. In: Chromosome Engineering in Plants: Genetics, Breeding, Evolution. Part A. P.K. Gupta and T. Tsuchiya, Eds., Elsevier, Chapter 7, 141-157.

43.  *Jones RN. 1991.  Cytogenetics of Alliums. In: Chromosome Engineering in Plants: Genetics, Breeding, Evolution. Part B. T. Tsuchiya, and P.K. Gupta, Eds., Elsevier, Chapter 12, 215-227.

44.  *Jones RN. 1991. B-chromosome drive. American Naturalist  137: 430-442. (Proceedings of a Symposium on Meiotic Drive held at the Univ. of Hawaii, January 1987).

45.  *Jones RN. 1992. Induction of artificial polyploids or artificial diploids in forages?: results and perspectives. Proc. 17th Meeting of the Fodder Crops Section of Eucarpia, Alghero, Oct.1991 (F. Veronesi, S. Bullitta and  S. Caredda eds.), p. 29-36. Col contributo del Consiglio Nazionale delle Richerche.

46.  Neves, N, Barão A, Castilho A, Silva M, Morais L, Carvalho V, Viegas W, Jones RN. 1992. Influence of DNA methylation on rye B-chromosome nondisjunction. Genome  35: 650- 652.

47.  *Jones RN, Hassan L, Posselt UK. 1992.  Manipulation of chiasma formation in ryegrass. Proc.17th Meeting of the Fodder Crops Section of Eucarpia, Alghero, Oct.1991. (F. Veronesi, S. Bullitta and S. Caredda eds.), p.142-144. Col contributo del Consiglio Nazionale delle Richerche.

48.  Chamberlain DA, Jones RN. 1992. B-chromosome stability in a cell suspension culture of rye (Secale cereale L.). Genetics - Life Science Advances  11: 1-6.

49.  Blunden R, Wilkes TJ, Forster JW, Jiménez MM, Sandery MJ,  Karp A, Jones RN. 1993. Identification of the E3900 family, a second family of rye B chromosome specific repeated sequences. Genome 36: 706-711.

50.  *Jones RN, Puertas MJ. 1993. The B-chromosomes of rye (Secale cereale L.). In: Frontiers in Plant Science Research, eds K.K. Dhir and T.S. Sareen, Chapter 6, 81-112. Bhagwati Enterprises, Dehli (India).

51.  Hassan L. Jones RN. 1994. Long-range effects of colchicine sensitivity on meiosis in Lolium multiflorum L. (Italian ryegrass). Heredity 73: 65-71.

52.  Jiménez MM, Romera F, Puertas MJ, Jones RN. 1994. B-chromosomes in inbred lines of rye (Secale cereale L.) I. Vigour and fertility. Genetica  92: 149-154.

53.  Griffiths PD, Ougham HJ, Jones RN. 1994. Effects of genotype and environment upon endopolyploidy in the epidermal tissues of Lolium perenne and L. multiflorum. New Phytologist, 128: 339-345.

54.  Hassan L, Jones RN. 1995. Colchicine-induced heritable modification of chiasma frequency and distribution in perennial ryegrass (Lolium perenne). Genome 38: 356-361.

55.  Delgado M, Morais-Cecílio L, Neves N, Jones RN, Viegas W. 1995. The influence of B chromosomes on rDNA organization in rye interphase nuclei. Chromosome Research 3: 487-491.

56.  Wilkes TM, Francki MG, Langridge P, Karp A, Jones RN, Forster JW. 1995. Analysis of rye B-chromosome structure using fluorescence in situ hybridisation (FISH). Chromosome Research 3: 466-472.

57.  *Jones RN, Puertas MJ. 1995. Los chromosomas B. In: Gosálvez, J. and García de la Vega C.,eds. Seminarios Citogenética. Ediciones de la Universidade Autónoma de Madrid, 91-123.

58.  *Jones RN. 1995. Tansley Review - B chromosomes in plants. New Phytologist 131: 411- 434.

59.  Ortiz M, Puertas MJ, Jiménez MM, Romera F, Jones RN. 1996. B-chromosomes in inbred lines of rye (Secale cereale L..)  II. Effects at metaphase I and first pollen mitosis. Genetica  97: 65-72.

60.  Morais-Cecílio L, Delgado M, Jones RN, Viegas W. 1996. Painting rye B chromosomes in wheat: interphase chromatin organisation, nuclear disposition and association in plants with two, three or four Bs. Chromosome Research  4: 195-200.

61.  Houben A, Kynast RG, Heim U, Herman H, Forster JW, Jones RN. 1996. Molecular cytogenetic characterization of the terminal heterochromatic segment of the B chromosome of rye, Secale cereale L. Chromosoma 105: 97-103.

62.  Pašakinskienė I, Anamthawat-Jónsson K, Humphries MW, Jones RN. 1997. Novel diploids following chromosome elimination and somatic recombination in Lolium multiflorum x Festuca arundinacea hybrids. Heredity 78: 464-469

63.  Morais-Cecílio L, Delgado M, Jones RN, Viegas W. 1997. Interphase arrangement of rye B chromosomes in rye and wheat.  Chromosome Research  5: 177-181.

64.  Bougourd SM, Jones RN. 1997. B chromosomes: a physiological enigma. New Phytologist 137: 43-54.

65.  Jones RN, Ougham H, Thomas H. 1997. Markers and mapping: we are all geneticists now. New Phytologist 137: 165-177.

66.  *Pašakinskienė I, Jones RN,  Anamthawat-Jónsson K, Humphreys M. 1997.  Novel diploids arising through chromosome segregation and somatic recombination in amphiploids of Lolium multiflorum x Festuca arundinacea.  In: Ecological Aspects of Breeding Fodder Crops and Amenity Grasses, eds. Z. Staszewski, W. Mlyniec and R. Osinski.  Proceedings of the 20th Meeting of EUCARPIA Fodder Crops and Amenity Grasses Section, Radzików, Poland, 7-10 October 1996. pp 356-360.

67.    Pašakinskienė I, Anamthawat-Jónsson K, Humphreys MW, Paplauskiene V, Jones RN. 1998. New molecular evidence on genome relationships and chromosome identification in Festuca and Lolium. Heredity 81: 659-665.

68   *Pašakinskienė I, Jones RN. 1998. Diploidisation and somatic recombination in polyploid hybrids of Lolium-Festuca: a new phenomenon of chromosome instability. In: Genetics and Biotechnology in Crop Improvement (ed. Gupta, P.K.), Rastogi Publications, Meerut, India. pp. 24-37.

69.   Canter PH, Pašakinskienė I, Jones RN, Humphreys MW. 1999. Chromosome substitution in the amphiploid Lolium perenne x Festuca pratensis cv. Prior (2n = 4x = 28). Theoretical and Applied Genetics 98: 809-814.

70*   Touré A, Haussmann BIG, Jones N, Thomas H, Ougham H. 2000. Construction of a genetic map. In: Haussmann, B.I.G., D.E. Hess, C.T. Hash and P. Bramel-Cox (eds.). Training Manual: Application of Molecular Markers in Plant Breeding. Seminar held at IITA, Ibadan, Nigeria, Aug 16/17, 1999. International Crops Research Institute for the Semi-Arid Tropics (ICRISAT).                    

71*   Morais-Cecílio L, Delgado M, Jones RN, Viegas W. 2000. Modification of wheat rDNA loci by rye B chromosomes: a chromatin organisation model. Chromosome Research  8: 341-351.                                                   

72.   Langdon T, Seago C,  Jones N, Ougham H, Thomas H, Forster JW Jenkins G.  2000.  De novo evolution of satellite DNA on the rye B chromosome. Genetics 154: 869-884.                                                                              

73.   Langdon T, Seago C, Mende M, Legget M, Thomas H, Forster JW, Thomas H, Jones N, Jenkins G. 2000. Retrotransposon evolution in diverse plant genomes. Genetics 156:  313-325.

74.  *King IP, Morgan WG, Armstead IP, King J, Jones TAH, Nash JV. et al. 2000. Species relationships, introgression and physical mapping in Lolium perenne x Festuca pratensis hybrids. Chromosomes Today:13: Proceedings 13th International Chromosome Conference, Ancona, Italy, 8-12 September 1998. Olmo, E., Redi, C. A., eds. 277-285  Birkhauser Verlag, Basel

75.   Armstead IP, Bollard A, Morgan WG, Harper JA, King IP, Jones RN, Forster JW, Hayward MD, Thomas  HM. 2001. Genetic and physical analysis of a single Festuca pratensis chromosome segment substitution in Lolium perenne. Chromosoma 110: 52-57

76.  Mikhailova EI, Sosnikhina SP, Kirillova GA, Tikholiz OA, Smirnov VG, Jones RN, Jenkins GM.  2001. Nuclear dispositions of subtelomeric and pericentromeric chromosomal domains during meiosis in synaptic mutants of rye (Secale cereale L.). J. Cell Science 114: 1875-1882.

77.   Hasterok R, Jenkins G, Langdon T, Jones RN, Maluszynska J. 2001. Ribosomal DNA is an effective marker of Brassica chromosomes. Theoretical and Applied Genetics 103: 486-490

78.   Hasterok R, Jenkins G, Langdon T, Jones RN.  2002.  Assay of the B-chromosome specific satellite DNA of rye. Chromosome Research 10: 83-86

79.   King J, Roberts LA, Kearsey M, Thomas HM, Jones RN, Huang L, Armstead IP, Morgan WG, King IP. 2002. A demonstration of the 1:1 correspondence between chiasma frequency and recombination. Genetics 161: 307-314.

80.   King J, Armstead IP, Donnison IS, Thomas HM, Jones RN, Kearsey MJ, Roberts LA, Jones A, King IP. 2002. Physical and genetic mapping in the grasses. Genetics 161: 315-324.

81.  Donnison I, Cisneros P, Montoya T, Armstead I, Thomas B, Thomas A, Jones RN, Morris P. 2002. The floral transition in model and forage grasses. Flowering Newsletter 33: 42-48.
82.   Pašakinskienė I, Jones RN. 2003. Challenging genome integrity. Biologija  2003 Nr. 1: 3-9.
83.   Langdon T, Jenkins GM, Hasterok R, Jones RN, King IP. 2003. A high-copy number CACTA -family transposon in temperate grasses and cereals. Genetics 163: 1097-1108.

84.  *Jones RN, Houben A. 2003. B chromosomes in plants: escapees from the A chromosome genome? Trends in Plant Science 8: 417-423.

85.  *Jones RN, Pašakinskienė I. 2003. Challenges to genome integrity: conflict and resolution. In: Z. Zwierzykowski, M. Surma, P. Kachlicki (eds.). Application of Novel Cytogenetic and Molecular Techniques  in Genetics and Breeding of the Grasses, 9-20, 2003. Institute of Plant Genetics, Polish Academy of Sciences Poznań

86.  *Jones RN.  2003. B chromosomes. In: Encyclopaedia of Plant & Crop Science, Ed. B Thomas, Marcel Dekker Inc, New York. pp 71-74.

87. Palestis BG, Burt A, Jones RN, Trivers R. 2004. B chromosomes are more frequent in mammals with acrocentric karyotypes: support for the theory of centromeric drive. Proc. R. Soc. Lond. B (Suppl.) 271: Number 3, S22-S24.

88.   Jones RN, Diez M, 2004. The B chromosome database.

89.   Jones RN, Diez M. 2004. The B chromosome database. In: ‘B Chromosomes in The Eukaryote Genome’ Cytogenetic and Genome Research 106: 149-150. Ed. JMP Camacho.                                                   

90.   Palestis BG, Trivers R, Burt A, Jones RN. 2004. The distribution of B chromosomes across species. In: ‘B Chromosomes in the Eukaryote Genome’. Cytogenetic and Genome Research 106: 151-158.Ed. JMP Camacho.

91.  *Jenkins GM, Jones RN. 2004. B chromosomes in hybrids of temperate cereals and grasses. In: ‘B Chromosomes in the Eukaryote Genome’. Cytogenetic and Genome Research 106: 314-319 Ed. JPM Camacho.

92.   Delgado M, Caperta A., Ribeiro T, Viegas W, Jones RN, Morais-Cecílio L. 2004. Different numbers of rye B chromosomes induce indentical compaction changes in distinct A chromosome domains. In: ‘B Chromosomes in the Eukaryote Genome’. Cytogenetic and Genome Research 106: 320-324. Ed. JPM Camacho.                                                                                                                                           

93.   Ribeiro T, Pires B, Delgado M, Viegas W, Jones RN, Morais-Cecílio L. 2004. Evidence for ‘cross- talk’between the A and B chromosomes of rye. Proc. R. Soc. Lond. B. (Suppl.) 271: S482-S484.

94.   Jones RN, Pašakinskienė I. 2005. Tansley Review - Genome conflict in the Gramineae. New Phytologist 165: 391-410.

95.   Moore BJ, Donnison IS, Harper JA, Armstead IP, King J, Thomas H, Jones RN, Jones TH, Thomas HM, Morgan WG, Thomas A, Ougham HJ, Huang L, Fentem T, Roberts LA, King IP. 2005. Molecular tagging of a senescence gene by introgression mapping of a stay-green mutation from Festuca pratensis. New Phyologist 165: 801-806.

96.  *Jones RN. 2005. McClintock’s controlling elements: the full story. In: ‘Plant Cytogenetics’. Cytogenetic and Genome Research 109: 90-103. Eds. MJ Puertas, T Naranjo.

97.  *Pašakinskienė I, Jones RN. 2005. A decade of 'chromosome painting' in Lolium and Festuca: species relationships and genome adjustment in hybrids In: ‘Plant Cytogenetics’. Cytogenetic and Genome Research 109: 393-399. Eds. MJ Puertas, T Naranjo.                                                        

98* Jenkins GM, Mikhailova EI, Langdon T, Tikholiz OA, Sosnikhina SP, Jones RN. 2005. Strategies for the study of meiosis in rye. In: ‘Plant Cytogenetics’. Cytogenetic and Genome Research. 109: 221-227 . Eds MJ Puertas, T Naranjo.

99.  Levin DA,  Palestis BG, Jones RN, Trivers R. 2005. Phyletic hot-spots for B chromosomes in angiosperms. Evolution 59: 962-969.

100. Costa-Nunes P, Ribeiro T, Delgado M, Morais-Cecilio L, Jones RN, Viegas W. 2005. Molecular and  cytological characterization of genomic variablity in hexaploid wheat cv. Lindström. Genome 48: 895-904.

101. Jenkins G, Mikhailova E, Phillips D, Hasterok R, Draper J, Jones RN. 2005. Models and meiosis in the’omics era. In Recent Advances in Genetics and Breeding of the Grasses. Institute of Plant Genetics PAS., Poznan, Poland. (Z. Zwierzykowski and A. Kosmala, eds.), pp. 97-104.

102. Caperta AD, Delgado M, Ressureição F, Meister A, Jones RN, Viegas W, Houben A. 2006. Colchicine-induced  polyploidisation depends on tubulin polymerization in c-metaphase cells.  Protoplasma 227: 147-153.

103. Zwierzykowski Z, Kosmala A, Zwierzykowska E, Jones RN, Jokś W, Bocianowski J. 2006.  Genome balance in six successive generations of the allotetraploid Festuca pratensis × Lolium perenne. Theoretical and Applied Genetics 113: 539-547.

104.  Mikhailova EI, Phillips D, Sosnikhina SP, Lovtsyus AV, Jones RN, Jenkins G. 2006. Molecular assembly of meiotic proteins Asy1 and Zyp1 and pairing promiscuity in rye (Secale cereale L.) and its synaptic mutant sy10. Genetics 174: 1247-1258.

105.  Carchilan M, Delgado M, Ribeiro T, Costa-Nunes P, Caperta A, Morais-Cecílio L, Jones RN, Houben A, Viegas W.  2007. Transcriptionally active heterochromatin in B chromosomes. Plant Cell 19: 1738-1749.

106.  Jones RN, Viegas W, Houben A. 2007. A century of B chromosomes in plants: so what? Annals of Botany doi: 10.1093/aob/mcm167.

107.  Phillips D,  Mikhailova EI, Timofejeva L,  Mitchell JL, Osina O, Sosnikhina SP, Jones RN, Jenkins G. 2007. Dissecting meiosis of rye using translational proteomics. Annals of Botany doi:10.1093/aob/mcm202