Mr John Harper

Mr John Harper

PDRA - Forage Genetics & Plant Breeding

Contact Details

Publications

2016

Kopecky, D., Harper, J., Bartoš, J., Gasior, D., Vrána, J., Hřibová, E., Boller, B., Ardenghi, N.M.G., Šimoníková, D., Doležel, J., Humphreys, M.W. 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 4 66 10.3389/fenvs.2016.00066 Cadair

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. Cadair

Cheng, Y., Zhou, K., Humphreys, M.W., Harper, J.A., 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 4 89 10.3389/fevo.2016.00089 Cadair

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., A. K. Bakken., K. A. 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. Proceedings of the 26th General Meeting of the European Grassland Federation. Norwegian Institute of Bioeconomy Research, Norway pp. 835-837. Cadair

2015

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. 31st International EUCARPIA Symposium Section Fodder Crops and Amenity Grasses: Breeding in a World of Scarcity. , Ghent, Belgium Cadair

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. Eucarpia Fodder Crops and Amenity Section 2015. Springer Nature, Switzerland pp. 29-33. 10.1007/978-3-319-28932-8_4 Cadair

2013

King, J., Armstead, I.P., Harper, J.A., Ramsay, L., Snape, J., Waugh, R., James, C.L., Thomas, A.M., Gasior, D., Kelly, R.O., Roberts, L.A., Gustafson, P., King, I. 2013. Exploitation of interspecific diversity for monocot crop improvement. Heredity 110 pp. 475–483. 10.1038/hdy.2012.116 Cadair

Armstead, I.P., Harper, J.A., King, J., King, I. 2013. Transmission Frequencies of Introgressed Festuca pratensis Chromosome and Chromosome Segments in Lolium perenne. Crop Science 53 (5) pp. 1968-1973. 10.2135/cropsci2013.03.0209 Cadair

2011

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 107 (8) pp. 1313-1321. 10.1093/aob/mcr083 Cadair

2010

Harper, J.A., Gasior, D., Humphreys, M.W., Farrell, M., King, J., King, I.P. 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. Cadair

Harper, J.A., Gasior, D., King, J., King, I.P., Thomas, I.D., Humphreys, M.W. 2010. A study of the naturally occurring xFestulolium hybrid - xFestulolium loliaceum and its progeny. 1st Festulolium working group workshop. Cadair

2009

Williams, G., King, I.P., King, J., Jenkins, G., Harper, J., Armstead, I.P. 2009. Manipulation of recombination in the grasses. Monogram Network Workshop. Oral presentation, Monogram Network Worshop. Cadair

Harper, J.A., Gasior, D., Roberts, L.A., Thomas, A.M., James, C.L., King, J., King, I.P., Armstead, I.P. 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. Cadair

King, J., Armstead, I.P., Harper, J.A., James, C.L., Roberts, L.A., Gasior, D., Kelly, R.O., Huang, L.S., Thomas, A.M., Skot, K., King, I.P. 2009. Progress in introgression mapping in the pooideae. Plant and Animal Genome XVII Conference. Other Cadair

Williams, J.G., King, I.P., King, J., Jenkins, G., Harper, J.A., Armstead, I.P. 2009. Manipulation of recombination in the grasses. 2009 Plant Science Wales. Cadair

2008

King, J., Armstead, I.P., Donnison, I., Roberts, L., Harper, J.A., Skøt, K., Elborough, K., King, I.P. 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. XXVIIth EUCARPIA Symposium on Improvement of Fodder Crops and Amenity Grasses. Cadair

Humphreys, M.W., Harper, J.A. 2008. Festulolium loliaceum, an understudied natural UK grass hybrid species that may procide benefits to UK grasslands withstanding the onsets of climate change. Other Cadair

King, J., Armstead, I.P., Donnison, I.S., Roberts, L.A., Harper, J.A., Skot, K.P., Elborough, K., King, I.P. 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. Cadair

2007

Armstead, I.P., King, J., King, I.P., Harper, J.A., Roberts, L.A., Donnison, I.S., Skøt, K.P. 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 177 (1) pp. 597-606. 10.1534/genetics.107.075515 Other Cadair

Armstead, I.P., Donnison, I.S., Aubry, S., Harper, J.A., Hörtensteiner, S., James, C.L., Mani, J., Moffet, M., Ougham, H.J., Roberts, L.A., Thomas, A.M., Weeden, N., Thomas, S., King, I.P. 2007. Cross-species identification of Mendel's/locus. Science 315 (5808) pp. 73. 10.1126/science.1132912 Other Cadair

2006

Armstead, I.P., Donnison, I.S., Aubry, S., Harper, J.A., Hortensteiner, S., James, C.L., Mani, J., Moffet, M., Ougham, H.J., Roberts, L.A., Thomas, A.M., Weeden, N., Thomas, S., King, I.P. 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 172 (4) pp. 592-597. 10.1111/j.1469-8137.2006.01922.x Cadair

Armstead, I.P., Harper, J.A., Turner, L.B., Skøt, L., King, I.P., Humphreys, M.O., Morgan, W.G., Thomas, H.M., Roderick, H.W. 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 55 (1) pp. 62-67. 10.1111/j.1365-3059.2005.01308.x Cadair

2005

Thomas, A.M., Thomas, H., Armstead, I.P., King, I.P., Harper, J.A., Moore, B.J., Huang, L.S., Fentem, P.A., Ougham, H.J., Jones, R.N., Jones, T.A.H., Roberts, L.A., King, J., Donnison, I.S. 2005. Molecular tagging of a senescence gene by introgression mapping of a stay-green mutation from Festuca pratensis. New Phytologist 165 (3) pp. 801-806. 10.1111/j.1469-8137.2004.01269.x Other Cadair

Humphreys, J., Harper, J.A., Armstead, I.P., Humphreys, M.W. 2005. Introgression-mapping of genes for drought resistance transferred from Festuca arundinacea var. glaucescens into Lolium multiflorum. Theoretical and Applied Genetics 110 (3) pp. 579-587. 10.1007/s00122-004-1879-2 Cadair

King, I.P., King, J., Armstead, I.P., Harper, J.A., Roberts, L.A., Thomas, H., Ougham, H.J., Jones, R.N., Thomas, A.M., Moore, B.J.Humphreys, M.O. 2005. Introgression mapping in the grasses. The 4th international symposium on the molecular breeding of forage and turf, a satellite workshop of the XXth International Grassland Congress. Cadair

King, J., Armstead, I.P., Roberts, L.A., Harper, J.A., Donnison, I.S., King, I.P. 2005. Exploiting the Lolium/Festuca introgression system. 6th Annual GARNet meeting (Genomic Arabidopsis Research Network). Cadair

2004

Harper, J.A., Thomas, I.D., Lovatt, J.A., Thomas, H.M. 2004. Physical mapping of rDNA sites in possible diploid progenitors of polyploid Festuca species. Plant Systematics and Evolution 245 (3-4) pp. 3-4. 10.1007/s00606-003-0110-2 Cadair

Armstead, I., Roderick, H.W., Harper, J.A., Thomas, H.M., King, I.P., Humphreys, M.O. 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. Cadair

2003

Harper, J.A., Morgan, W.G., Thomas, H.M., Roderick, H.W. 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. 10.1038/sj.hdy.6800344 Cadair

Gardner, R.K., Kingston-Smith, A.H., Harper, J.A., Jenkins, G.M. 2003. Improving forage protein through the use of Festulolium introgressions. 7th British Grassland Society Research Conference. Cadair

2002

Harper, J.A., Armstead, I., King, I.P., Roberts, L., Schledde, T., Wagner, N., Thomas, H. 2002. Developing a chromosome substitution series in Lolium/Festuca. 2002 Plant Science Wales. Cadair

2001

Thomas, H.M., Harper, J.A., Morgan, W.G. 2001. Gross chromosome rearrangements are occurring in an accession of the grass Lolium rigidum. Chromosome Research pp. 585-590. 10.1023/A:1012499303514 Cadair

Harper, J.A., Morgan, W.G., Thomas, H.M., Koch, S., King, I.P. 2001. Introgression of chromosomes of Festuca arundinacea var. glaucescens into Lolium multiflorum revealed by genomic in situ hybridisation (GISH). Theoretical and Applied Genetics 103 (5) pp. 696-701. 10.1007/s001220100634 Cadair

Armstead, I.P., King, I.P., Morgan, W.G., Forster, J.W., Jones, R.N., Bollard, A.L., Thomas, H.M., Hayward, M.D., Harper, J.A. 2001. Genetic and physical analysis of a single Festuca pratensis chromosome segment substitution in Lolium perenne. Chromosoma 110 (1) pp. 52-57. 10.1007/s004120000122 Cadair

2000

King, I., Morgan, W.G., Armstead, I., Jones, T.A.H., Jones, R.N., 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., C. A. Redi. (eds) Chromosomes Today: Proceedings 13th International Chromosome Conference. Proceedings 13th International Chromosome Conference. Springer Nature pp. 277-286. Cadair

1998

King, I.P., Morgan, W.G., Armstead, I.P., Harper, J.A., Hayward, M.D., Bollard, A., Nash, J.V., Forster, J.W., Thomas, H.M. 1998. Introgression mapping in the grasses. I. Introgression of Festuca pratensis chromosomes and chromosome segments into Lolium perenne. Heredity 81 (4) pp. 462-467. 10.1046/j.1365-2540.1998.00437.x Cadair

1996

Thomas, H.M., Harper, J.A., Meredith, M.R., Morgan, W.G., Thomas, I., Timms-Taravella, E., King, I. 1996. Comparison of ribosomal DNA sites inLolium species by fluorescencein situ hybridization. Chromosome Research 4 (7) pp. 486-490. 10.1007/BF02261775 Cadair