Mr John Harper

Mr John Harper

PDRA - Forage Genetics & Plant Breeding

Contact Details

Publications

King, J, Grewal, S, Hubbart Edwards, S, Scholfield, D, Ashling, S, Harper, J, Allen, AM & Edwards, KJ 2017, 'Introgression of Aegilops speltoides segments in Triticum aestivum and the effect of the gametocidal genes' Annals of Botany, pp. 1-12. DOI: 10.1093/aob/mcx149
Kopecky, D, Harper, J, Bartoš, J, Gasior, D, Vrána, J, Hřibová, E, Boller, B, Ardenghi, NMG, Šimoníková, D, Doležel, J & Humphreys, MW 2016, 'An Increasing Need for Productive and Stress Resilient Festulolium Amphiploids: What Can Be Learnt from the Stable Genomic Composition of Festuca pratensis subsp. apennina (De Not.) Hegi?' Frontiers in Environmental Science, vol 4, 66. DOI: 10.3389/fenvs.2016.00066
Humphreys, M, Loka, D, Gwynn-Jones, D, Scullion, J, Doonan, J, Gasior, D, Harper, J, Farrell, M, Kingston-Smith, A, Dodd, R, Chadwick, D, Hill, P, Mills, G, Hayes, F, Robinson, D & Jones, D 2016, 'Climate-smart Strategies to Safeguard Persistency and Achieve Sustainable Grassland Production' 26th General Meeting of the EGF, Trondheim, Norway, 2016 - 2016, .
Cheng, Y, Zhou, K, Humphreys, MW, Harper, JA, Zhang, X, Yan, H & Huang, L 2016, 'Phylogenetic Relationships in the Festuca-Lolium Complex (Loliinae; Poaceae): New Insights from Chloroplast Sequences' Frontiers in Ecology and the Environment, vol 4, 89. DOI: 10.3389/fevo.2016.00089
Gasior, D, Harper, J, Thomas, A, Evans, C, Armstead, I & Humphreys, M 2016, Changes in freezing tolerance and photosystem II acclimation mechanisms within a Lolium perenne x Festuca pratensis substitution series. in M Höglind, AK Bakken, KA Hovstad, E Kallioniemi, H Riley, H Steinshamnm & L Østrem (eds), The multiple roles of grassland in the European bioeconomy: Proceedings of the 26th General Meeting of the European Grassland Federation. Norwegian Institute of Bioeconomy Research, Norway, pp. 835-837, Proceedings of the 26th General Meeting of the European Grassland Federation, Trondheim, Norway, 2016.
Gasior, D, Harper, J, Humphreys, M & Armstead, I 2015, An assessment of genetic diversity within a collection of natural Lolium perenne ecotypes from across Europe. in 31st International EUCARPIA Symposium Section Fodder Crops and Amenity Grasses: Breeding in a World of Scarcity. Ghent, Belgium.
Gasior, D, Harper, J, Humphreys, M, Lovatt, A, Armstead, I & Sanderson, R 2015, An Assessment of Phenotypic Diversity Within a Collection of Natural Lolium perenne Ecotypes and Cultivars from Across Europe. in I Roldán-Ruiz, J Baert & D Reheul (eds), Proceedings of the 2015 Meeting of the Section “Forage Crops and Amenity Grasses” of Eucarpia: Breeding in a World of Scarcity. Springer Nature, Switzerland, pp. 29-33, Eucarpia Fodder Crops and Amenity Section 2015, Ghent, Belgium, 2015. DOI: 10.1007/978-3-319-28932-8_4
King, J, Armstead, IP, Harper, JA, Ramsay, L, Snape, J, Waugh, R, James, CL, Thomas, AM, Gasior, D, Kelly, RO, Roberts, LA, Gustafson, P & King, I 2013, 'Exploitation of interspecific diversity for monocot crop improvement' Heredity, vol 110, pp. 475–483. DOI: 10.1038/hdy.2012.116
Armstead, IP, Harper, JA, King, J & King, I 2013, 'Transmission Frequencies of Introgressed Festuca pratensis Chromosome and Chromosome Segments in Lolium perenne' Crop Science, vol 53, no. 5, pp. 1968-1973. DOI: 10.2135/cropsci2013.03.0209
Harper, J, Armstead, I, Thomas, A, James, C, Gasior, D, Bisaga, M, Roberts, L, King, I & King, J 2011, 'Alien introgression in the grasses Lolium perenne (perennial ryegrass) and Festuca pratensis (meadow fescue): the development of seven monosomic substitution lines and their molecular and cytological characterization' Annals of Botany, vol 107, no. 8, pp. 1313-1321. DOI: 10.1093/aob/mcr083
Harper, JA, Gasior, D, Humphreys, MW, Farrell, M, King, J & King, IP 2010, 'The production of a wide hybrid between Lolium multiflorum and the North African Festuca species festuca arundinacea subsp. atlantigena' 1st Festulolium working group workshop, Poznan, Poland, 2010 - 2010, .
Harper, JA, Gasior, D, King, J, King, IP, Thomas, ID & Humphreys, MW 2010, 'A study of the naturally occurring xFestulolium hybrid - xFestulolium loliaceum and its progeny' 1st Festulolium working group workshop, Poznan, Poland, 2010 - 2010, .
Williams, G, King, IP, King, J, Jenkins, G, Harper, J & Armstead, IP 2009, Manipulation of recombination in the grasses. in Monogram Network Workshop. Oral presentation, Monogram Network Worshop, Bristol, United Kingdom of Great Britain and Northern Ireland, 2009.
Harper, JA, Gasior, D, Roberts, LA, Thomas, AM, James, CL, King, J, King, IP & Armstead, IP 2009, 'Can the weed grass species Lolium temulentum be a useful tool in allowing us to investigate basic fundamental traits within the grasses?' 2009 Plant Science Wales, Cardiff, United Kingdom of Great Britain and Northern Ireland, 2009 - 2009, pp. p17.
King, J, Armstead, IP, Harper, JA, James, CL, Roberts, LA, Gasior, D, Kelly, RO, Huang, LS, Thomas, AM, Skot, K & King, IP 2009, 'Progress in introgression mapping in the pooideae' Plant and Animal Genome XVII Conference, San Diego, United States of America, 2009 - 2009, pp. W274.
Williams, JG, King, IP, King, J, Jenkins, G, Harper, JA & Armstead, IP 2009, 'Manipulation of recombination in the grasses' 2009 Plant Science Wales, Cardiff, United Kingdom of Great Britain and Northern Ireland, 2009 - 2009, pp. 13.
King, J, Armstead, IP, Donnison, I, Roberts, L, Harper, JA, Skøt, K, Elborough, K & King, IP 2008, 'Comparative analyses reveal the major fraction of functionally annotated gene models in monocots are located in recombination poor/very poor regions of the genome' Paper presented at XXVIIth EUCARPIA Symposium on Improvement of Fodder Crops and Amenity Grasses, Copenhagen, Denmark, 2007 - 2007, .
Humphreys, MW & Harper, JA 2008, 'Festulolium loliaceum, an understudied natural UK grass hybrid species that may procide benefits to UK grasslands withstanding the onsets of climate change', pp. 7-9, Crop Wild Relative, 6 University of Birmingham, 06 January.
King, J, Armstead, IP, Donnison, IS, Roberts, LA, Harper, JA, Skot, KP, Elborough, K & King, IP 2008, 'Comparative analysis reveal the major fraction of functionally annotated gene models in monocots are located in recombination poor/very poor regions of the genome' pp. p34.
Armstead, IP, King, J, King, IP, Harper, JA, Roberts, LA, Donnison, IS & Skøt, KP 2007, 'Comparative Analyses Between Lolium/Festuca Introgression Lines and Rice Reveal the Major Fraction of Functionally Annotated Gene Models Is Located in Recombination-Poor/Very Recombination-Poor Regions of the Genome' Genetics, vol 177, no. 1, pp. 597-606. DOI: 10.1534/genetics.107.075515
Armstead, IP, Donnison, IS, Aubry, S, Harper, JA, Hörtensteiner, S, James, CL, Mani, J, Moffet, M, Ougham, HJ, Roberts, LA, Thomas, AM, Weeden, N, Thomas, S & King, IP 2007, 'Cross-species identification of Mendel's/locus' Science, vol 315, no. 5808, pp. 73. DOI: 10.1126/science.1132912
Armstead, IP, Donnison, IS, Aubry, S, Harper, JA, Hortensteiner, S, James, CL, Mani, J, Moffet, M, Ougham, HJ, Roberts, LA, Thomas, AM, Weeden, N, Thomas, S & King, IP 2006, 'From crop to model to crop: identifying the genetic basis of the staygreen mutation in the Lolium/Festuca forage and amenity grasses' New Phytologist, vol 172, no. 4, pp. 592-597. DOI: 10.1111/j.1469-8137.2006.01922.x
Armstead, IP, Harper, JA, Turner, LB, Skøt, L, King, IP, Humphreys, MO, Morgan, WG, Thomas, HM & Roderick, HW 2006, 'Introgression of crown rust (Puccinia coronata) resistance from meadow fescue (Festuca pratensis) into Italian ryegrass (Lolium multiflorum): Genetic mapping and identification of associated molecular markers' Plant Pathology, vol 55, no. 1, pp. 62-67. DOI: 10.1111/j.1365-3059.2005.01308.x
Thomas, AM, Thomas, H, Armstead, IP, King, IP, Harper, JA, Moore, BJ, Huang, LS, Fentem, PA, Ougham, HJ, Jones, RN, Jones, TAH, Roberts, LA, King, J & Donnison, IS 2005, 'Molecular tagging of a senescence gene by introgression mapping of a stay-green mutation from Festuca pratensis' New Phytologist, vol 165, no. 3, pp. 801-806. DOI: 10.1111/j.1469-8137.2004.01269.x
Humphreys, J, Harper, JA, Armstead, IP & Humphreys, MW 2005, 'Introgression-mapping of genes for drought resistance transferred from Festuca arundinacea var. glaucescens into Lolium multiflorum' Theoretical and Applied Genetics, vol 110, no. 3, pp. 579-587. DOI: 10.1007/s00122-004-1879-2
King, IP, King, J, Armstead, IP, Harper, JA, Roberts, LA, Thomas, H, Ougham, HJ, Jones, RN, Thomas, AM, Moore, BJ & Humphreys, MO (ed.) 2005, 'Introgression mapping in the grasses' Paper presented at The 4th international symposium on the molecular breeding of forage and turf, a satellite workshop of the XXth International Grassland Congress, Aberystwyth, United Kingdom of Great Britain and Northern Ireland, 2005 - 2005, pp. 31-41.
King, J, Armstead, IP, Roberts, LA, Harper, JA, Donnison, IS & King, IP 2005, 'Exploiting the Lolium/Festuca introgression system' 6th Annual GARNet meeting (Genomic Arabidopsis Research Network), Norwich, United Kingdom of Great Britain and Northern Ireland, 2005 - 2005, .
Harper, JA, Thomas, ID, Lovatt, JA & Thomas, HM 2004, 'Physical mapping of rDNA sites in possible diploid progenitors of polyploid Festuca species' Plant Systematics and Evolution, vol 245, no. 3-4, pp. 3-4. DOI: 10.1007/s00606-003-0110-2
Armstead, I, Roderick, HW, Harper, JA, Thomas, HM, King, IP & Humphreys, MO 2004, 'Identification of molecular markers for crown rust (Puccinia coronata) resistance in a Lolium/Festuca introgression population using syntenic relationships with rice' Plant Genomics European Meeting, Lyon, France, 2004 - 2004, .
Harper, JA, Morgan, WG, Thomas, HM & Roderick, HW 2003, 'Introgression of crown rust (Puccinia coronata) resistance from meadow fescue (Festuca pratensis) into Italian ryegrass (Lolium multiflorum) and physical mapping of the locus' Heredity, pp. 396-400. DOI: 10.1038/sj.hdy.6800344
Gardner, RK, Kingston-Smith, AH, Harper, JA & Jenkins, GM 2003, 'Improving forage protein through the use of Festulolium introgressions' Paper presented at 7th British Grassland Society Research Conference, Aberystwyth, United Kingdom of Great Britain and Northern Ireland, 2003 - 2003, pp. 1-3.
Harper, JA, Armstead, I, King, IP, Roberts, L, Schledde, T, Wagner, N & Thomas, H 2002, 'Developing a chromosome substitution series in Lolium/Festuca' 2002 Plant Science Wales, Bangor, United Kingdom of Great Britain and Northern Ireland, 2002 - 2002, .
Thomas, HM, Harper, JA & Morgan, WG 2001, 'Gross chromosome rearrangements are occurring in an accession of the grass Lolium rigidum' Chromosome Research, pp. 585-590. DOI: 10.1023/A:1012499303514
Harper, JA, Morgan, WG, Thomas, HM, Koch, S & King, IP 2001, 'Introgression of chromosomes of Festuca arundinacea var. glaucescens into Lolium multiflorum revealed by genomic in situ hybridisation (GISH)' Theoretical and Applied Genetics, vol 103, no. 5, pp. 696-701. DOI: 10.1007/s001220100634
Armstead, IP, King, IP, Morgan, WG, Forster, JW, Jones, RN, Bollard, AL, Thomas, HM, Hayward, MD & Harper, JA 2001, 'Genetic and physical analysis of a single Festuca pratensis chromosome segment substitution in Lolium perenne' Chromosoma, vol 110, no. 1, pp. 52-57. DOI: 10.1007/s004120000122
King, I, Morgan, WG, Armstead, I, Jones, TAH, Jones, RN, Harper, J, Roberts, L, Taylor, S & Thomas, H 2000, Species relationships, introgression and physical mapping in Lolium perenne x Festuca pratensis hybrids. in E Olmo & CA Redi (eds), Chromosomes Today: Proceedings 13th International Chromosome Conference. vol. 13, Springer Nature, pp. 277-286, Proceedings 13th International Chromosome Conference, Ancona, Italy, 1998.
King, IP, Morgan, WG, Armstead, IP, Harper, JA, Hayward, MD, Bollard, A, Nash, JV, Forster, JW & Thomas, HM 1998, 'Introgression mapping in the grasses. I. Introgression of Festuca pratensis chromosomes and chromosome segments into Lolium perenne' Heredity, vol 81, no. 4, pp. 462-467. DOI: 10.1046/j.1365-2540.1998.00437.x
Thomas, HM, Harper, JA, Meredith, MR, Morgan, WG, Thomas, I, Timms-Taravella, E & King, I 1996, 'Comparison of ribosomal DNA sites inLolium species by fluorescencein situ hybridization' Chromosome Research, vol 4, no. 7, pp. 486-490. DOI: 10.1007/BF02261775