Prof John Witcombe

Professorial Research Fellow

  1. Article › Research › Peer-reviewed
  2. Published

    Accelerating public sector rice breeding with high-density KASP markers derived from whole genome sequencing of indica rice

    Steele, K., Quinton-Tulloch, M., Amgai, R. B., Dhakal, R., Khatiwada, S. P., Vyas, D., Heine, M. & Witcombe, J., Apr 2018, In : Molecular Breeding. 38, 38.

    Research output: Contribution to journalArticle

  3. Published

    Adoption of rice varieties - I. Age of varieties and patterns of variability

    Witcombe, J. R., Khadka, K., Puri, R. R., Khanal, N. P., Sapkota, A. & Joshi, K. D., 1 Oct 2017, In : Experimental Agriculture. 53, 4, p. 512-527

    Research output: Contribution to journalArticle

  4. Published

    Adoption of rice varieties. 2. Accelerating uptake

    Witcombe, J. R., Khadka, K., Puri, R. R., Khanal, N. P., Sapkota, A. & Joshi, K. D., 1 Oct 2017, In : Experimental Agriculture. 53, 4, p. 627-643

    Research output: Contribution to journalArticle

  5. Published

    An RFLP-based genetic map of pearl millet (Pennisetum glaucum)

    Liu, C. J., Witcombe, J. R., Pittaway, T. S., Nash, M., Hash, C. T., Busso, C. S. & Gale, M. D., Oct 1994, In : Theoretical and Applied Genetics. 89, p. 481-487

    Research output: Contribution to journalArticle

  6. Published

    Breeding for abiotic stresses for sustainable agriculture

    Witcombe, J. R., Hollington, P. A., Howarth, C. J., Reader, S. & Steele, K. A., 27 Feb 2008, In : Philosophical Transactions of The Royal Society B: Biological Sciences. 363, 1492, p. 703-716

    Research output: Contribution to journalArticle

  7. Published

    Collaborative and consultative participatory plant breeding of rice for the rainfed uplands of eastern India

    Virk, D. S., Singh, D. N., Prasad, S. C., Gangwar, J. S. & Witcombe, J. R., 1 Jun 2003, In : Euphytica. 132, 1, p. 95-108

    Research output: Contribution to journalArticle

  8. Published

    Collaborative breeding with farmers can be effective.

    Gyawali, S., Sunwar, S., Subedi, M., Tripathi, M., Joshi, K. D. & Witcombe, J. R., 20 Feb 2007, In : Field Crops Research. 101, 1, p. 88-95

    Research output: Contribution to journalArticle

  9. Published

    Development of a Set of Chromosome Segment Substitution Lines in Pearl Millet [Pennisetum glaucum (L.) R. Br.]

    Kumari, B. R., Kolesnikova-Allen, M. A., Hash, C. T., Senthilvel, S., Nepolean, T., Kishor, P. B. K., Riera-Lizarazu, O., Witcombe, J. & Srivastava, R. K., 28 Jul 2014, In : Crop Science. 54, 5, p. 2175-2182

    Research output: Contribution to journalArticle

  10. Published

    Evaluating cultivars in unbalanced on-farm participatory trials.

    Virk, D. S. & Witcombe, J. R., 5 Mar 2008, In : Field Crops Research. 106, 2, p. 105-115

    Research output: Contribution to journalArticle

  11. Published

    Farmer Participatory Crop Improvement. I. Varietal Selection and Breeding Methods and Their Impact on Biodiversity

    Witcombe, J. R., Joshi, A., Joshi, K. D. & Sthapit, B. R., Oct 1996, In : Experimental Agriculture. 32, 4, p. 445-460

    Research output: Contribution to journalArticle

  12. Published

    Farmer Participatory Crop Improvement. II. Participatory Varietal Selection, a Case Study in India

    Joshi, A. & Witcombe, J. R., Oct 1996, In : Experimental Agriculture. 32, 4, p. 461 - 477

    Research output: Contribution to journalArticle

  13. Published

    Farmer Participatory Crop Improvement. III. Participatory Plant Breeding, a Case Study for Rice in Nepal

    Sthapit, B. R., Joshi, K. D. & Witcombe, J. R., Oct 1996, In : Experimental Agriculture. 32, 4, p. 479-496

    Research output: Contribution to journalArticle

  14. Published

    Field evaluation of upland rice lines selected for QTLs controlling root traits.

    Steele, K. A., Virk, D. S., Kumar, R., Prasad, S. C. & Witcombe, J. R., 5 Mar 2007, In : Field Crops Research. 101, 2, p. 180-186

    Research output: Contribution to journalArticle

  15. Published

    Has the introduction of modern rice varieties changed rice genetic diversity in a high-altitude region of Nepal?

    Steele, K. A., Gyawali, S., Joshi, K. D., Shrestha, P., Sthapit, B. R. & Witcombe, J. R., 10 Jul 2009, In : Field Crops Research. 113, 1, p. 24-30

    Research output: Contribution to journalArticle

  16. Published

    Highly client-oriented breeding, using local preferences and selection, produces widely adapted rice varieties.

    Joshi, K. D., Musa, A. M., Johansen, C., Gyawali, S., Harris, D. & Witcombe, J. R., 4 Jan 2007, In : Field Crops Research. 100, 1, p. 107-116

    Research output: Contribution to journalArticle

  17. Published

    How much evidence is needed before client-oriented breeding (COB) is institutionalised? Evidence from rice and maize in India

    Witcombe, J. & Yadavendra, J. P., Oct 2014, In : Field Crops Research. 167, p. 143-152

    Research output: Contribution to journalArticle

  18. Published

    How narrowly adapted are the products of decentralised breeding? The spread of rice varieties from a participatory plant breeding programme in Nepal.

    Joshi, K. D., Sthapit, B. R. & Witcombe, J. R., 1 Dec 2001, In : Euphytica. 122, 3, p. 589-597

    Research output: Contribution to journalArticle

  19. Published

    Identifying famers' preferences and constraints to Pearl Millet production in the Sahel and North-Sudan zones of Burkina Faso

    Drabo, I., Zangre, R. G., Danquah, E. Y., Ofori, K., Witcombe, J. & Hash, C. T., Oct 2019, In : Experimental Agriculture. 55, 5, p. 765-775

    Research output: Contribution to journalArticle

  20. Published

    Identifying superior wheat cultivars in participatory research on resource poor farms.

    Thapa, D. B., Sharma, R. C., Mudwari, A., Ortiz-Ferrara, G., Sharma, S., Basnet, R. K., Witcombe, J. R., Virk, D. S. & Joshi, K. D., 26 Jun 2009, In : Field Crops Research. 112, 2-3, p. 124-130

    Research output: Contribution to journalArticle

  21. Published

    Improving the food security of low-resource farmers: introducing horsegram into maize-based cropping systems.

    Witcombe, J. R., Billore, M., Singhal, H. C., Patel, N. B., Tikka, B. S., Saini, D. P., Sharma, L. K., Sharma, R., Yadav, S. K. & Yadavendra, J. P., 1 Jun 2008, In : Experimental Agriculture. 44, 3, p. 339-348

    Research output: Contribution to journalArticle

  22. Published

    Increasing genetic diversity by participatory varietal selection in high potential production systems in Nepal and India

    Witcombe, J. R., Joshi, K. D., Rana, R. B. & Virk, D. S., 1 Dec 2001, In : Euphytica. 122, 3, p. 575-588

    Research output: Contribution to journalArticle

  23. Published

    Increasing the client orientation of maize breeding using farmer participation in eastern India

    Virk, D. S., Chakraborty, M., Ghosh, J., Prasad, S. C. & Witcombe, J. R., 1 Oct 2005, In : Experimental Agriculture. 41, 4, p. 413-426

    Research output: Contribution to journalArticle

  24. Published

    KASP™ based markers reveal a population sub-structure in temperate rice (Oryza sativa L.) germplasm and local landraces grown in the Kashmir valley, north-western Himalayas

    Shikari, A. B., Najeeb, S., Khan, G., Mohidin, F. A., Shah, A. H., Nehvi, F. A., Wani, S. A., Bhat, N. A., Waza, S. A., Subba Roa, L. V., Steele, K. & Witcombe, J., Mar 2021, In : Genetic Resources and Crop Evolution. 68, 3, p. 821–834

    Research output: Contribution to journalArticle

  25. Published

    Linking community-based seed producers to markets for a sustainable seed supply system.

    Witcombe, J. R., Devkotas, K. P. & Joshi, K. D., 10 Sep 2010, In : Experimental Agriculture. 46, 4, p. 425-437

    Research output: Contribution to journalArticle

  26. Published

    Managing an agricultural research programme for poverty alleviation in developing countries: an institute without walls

    Stirling, C. M., Harris, D. & Witcombe, J. R., 1 Apr 2006, In : Experimental Agriculture. 42, 2, p. 127-146

    Research output: Contribution to journalArticle

  27. Published

    Mapping quantitative trait loci for downy mildew resistance in pearl millet

    Jones, E. S., Liu, C. J., Gale, M. D., Hash, C. T. & Witcombe, J. R., Aug 1995, In : Theoretical and Applied Genetics. 91, 3, p. 448-456

    Research output: Contribution to journalArticle

  28. Published

    Mapping quantitative trait loci for resistance to downy mildew in pearl millet: Field and glasshouse screens detect the same QTL

    Jones, E. S., Breese, W. A., Liu, C. J., Singh, S. D., Shaw, D. S. & Witcombe, J. R., 1 Jul 2002, In : Crop Science. 42, 4, p. 1316-1323

    Research output: Contribution to journalArticle

  29. Published

    Marker-assisted selection to introgress QTLs controlling root traits into an Indian upland rice variety

    Steele, K. A., Price, A. H., Shashidhar, H. E. & Witcombe, J. R., 14 Sep 2006, In : Theoretical and Applied Genetics. 112, 2, p. 208-221

    Research output: Contribution to journalArticle

  30. Published

    Marker-evaluated selection in rice: shifts in allele frequency among bulks selected in contrasting agricultural environments identify genomic regions of importance to rice adaptation and breeding.

    Steele, K. A., Edwards, G., Zhu, J. & Witcombe, J. R., 1 Oct 2004, In : Theoretical and Applied Genetics. 109, 6, p. 1247-1260

    Research output: Contribution to journalArticle

  31. Published

    Mass and line selection can produce equally uniform rice varieties

    Virk, D. S., Steele, K. A. & Witcombe, J. R., 1 Feb 2007, In : Field Crops Research. 100, 2-3, p. 341-347

    Research output: Contribution to journalArticle

  32. Published

    Number of crosses and population size for participatory and classical plant breeding

    Witcombe, J. R. & Virk, D. S., 1 Dec 2001, In : Euphytica. 122, 3, p. 451-462

    Research output: Contribution to journalArticle

  33. Published

    Participatory plant breeding in maize: a case study from Gujarat, India.

    Witcombe, J. R., Joshi, A. & Goyal, S. N., 1 Apr 2003, In : Euphytica. 130, 3, p. 413-422

    Research output: Contribution to journalArticle

  34. Published

    Participatory plant breeding is better described as highly client-oriented plant breeding. I. Four indicators of client-orientation in plant breeding

    Witcombe, J. R., Joshi, K. D., Gyawali, S., Musa, A. M., Johansen, C., Virk, D. S. & Sthapit, B. R., 1 Jul 2005, In : Experimental Agriculture. 41, 3, p. 299-319

    Research output: Contribution to journalArticle

  35. Published

    Participatory plant breeding is better described as highly client-oriented plant breeding. II. Optional farmer collaboration in the segregating generations.

    Witcombe, J. R., Gyawali, S., Sunwar, S., Sthapit, B. R. & Joshi, K. D., 1 Jan 2006, In : Experimental Agriculture. 42, 1, p. 79-90

    Research output: Contribution to journalArticle

  36. Published

    Participatory research approaches rapidly improve household food security in Nepal and identify policy changes required for institutionalisation

    Joshi, K. D., Devkota, K. P., Harris, D., Khanal, N. P., Paudyal, B., Sapkota, A. & Witcombe, J. R., 13 May 2012, In : Field Crops Research. 131, p. 40-48

    Research output: Contribution to journalArticle

  37. Published

    Participatory varietal selection in rice in Nepal in favourable agricultural environments - A comparison of two methods assessed by varietal adoption

    Joshi, K. D. & Witcombe, J. R., 1 Oct 2002, In : Euphytica. 127, 3, p. 445-458

    Research output: Contribution to journalArticle

  38. Published

    Partnering with farmers to accelerate adoption of new technologies in South Asia to improve wheat productivity.

    Ortiz-Ferrara, G., Joshi, A. K., Chand, R., Bhatta, M. R., Mudwari, A., Thapa, D. B., Sufian, M. A., Saikia, T. P., Chatrath, R., Witcombe, J. R., Virk, D. S. & Sharma, R. C., 1 Oct 2007, In : Euphytica. 157, 3, p. 399-407

    Research output: Contribution to journalArticle

  39. Published

    Plant breeding can be made more efficient by having fewer, better crosses

    Witcombe, J. R., Gyawali, S., Subedi, M., Virk, D. S. & Joshi, K. D., 7 Feb 2013, In : BMC Plant Biology. 13, 22

    Research output: Contribution to journalArticle

  40. Published

    QTLs associated with root traits increase yield in upland rice when transferred through marker-assisted selection

    Steele, K. A., Price, A. H., Witcombe, J. R., Shrestha, R., Singh, B. N., Gibbons, J. M. & Virk, D. S., 1 Jan 2013, In : Theoretical and Applied Genetics. 126, 1, p. 101-108

    Research output: Contribution to journalArticle

  41. Published

    REML is an effective analysis for mixed modelling of unbalanced on-farm varietal trials.

    Virk, D. S., Pandit, D. B., Sufian, M. A., Ahmed, F., Siddique, M. A., Samad, M. A., Rahman, M. M., Islam, M. M., Ortiz-Ferrara, G., Joshi, K. D. & Witcombe, J. R., 1 Jan 2009, In : Experimental Agriculture. 45, 1, p. 77-91

    Research output: Contribution to journalArticle

  42. Published

    Regulatory reform of seed systems: Benefits and impacts from a mungbean case study in Nepal

    Joshi, K. D., Khanal, N. P., Harris, D., Khanal, N. N., Sapkota, A., Khadka, K., Dara, R., Neupane, R. K., Joshi, M. & Witcombe, J., 1 Mar 2014, In : Field Crops Research. 158, p. 15-23

    Research output: Contribution to journalArticle

  43. Published
  44. Published

    Rice landrace diversity in Nepal. Socio-economic and ecological factors determining rice landrace diversity in three agro-ecozones of Nepal based on farm surveys

    Bajracharya, J., Rana, R. B., Gauchan, D., Sthapit, B. R., Jarvis, D. I. & Witcombe, J. R., 1 Oct 2010, In : Genetic Resources and Crop Evolution. 57, 7, p. 1013-1022

    Research output: Contribution to journalArticle

  45. Published

    Rice landrace diversity in Nepal: Variability of agro-morphological traits and SSR markers in landraces from a high-altitude site.

    Bajracharya, J., Steele, K. A., Jarvis, D. I., Sthapit, B. R. & Witcombe, J., 15 Feb 2006, In : Field Crops Research. 95, 2-3, p. 327-335

    Research output: Contribution to journalArticle

  46. Published

    Selection for salt-tolerance and early heading in bread wheat

    Mahar, A. R., Hollington, P. A., Witcombe, J. R. & Virk, D. S., 1 Jan 2003, In : Cereal research Communications. 31, 1-2, p. 81-88

    Research output: Contribution to journalArticle

  47. Published

    Teamwork delivers biotechnology products to Indian small-holder crop-livestock producers: Pearl millet hybrid “HHB 67 Improved” enters seed delivery pipeline

    Hash, C. T., Sharma, A., Kolesnikova-Allen, M. A., Singh, S. D., Thakur, R. P., Bhasker Raj, AG., Ratnaji Rao, M. N. V., Nijhawan, D. C., Beniwal, C. R., Sagar, P., Yadav, H. P., Yadav, Y. P., Srikant, Bhatnagar, S. K., Khairwal, I. S., Howarth, C. J., Cavan, G. P., Gale, M. D., Liu, C., Devos, K. M., Breese, W. & Witcombe, J. R., Aug 2006, In : Journal of SAT Agricultural Research. 2, 1, 3 p.

    Research output: Contribution to journalArticle

  48. Published

    The impact of participatory plant breeding (PPB) on landrace diversity: A case study for high-altitude rice in Nepal.

    Joshi, K. D. & Witcombe, J. R., 1 Oct 2003, In : Euphytica. 134, 1, p. 117-125

    Research output: Contribution to journalArticle

  49. Published

    Trade-offs between on-farm varietal diversity and highly client-oriented breeding - a case study of upland rice in India.

    Virk, D. S. & Witcombe, J., 1 Jun 2007, In : Genetic Resources and Crop Evolution. 54, 4, p. 823-835

    Research output: Contribution to journalArticle

  50. Published

    Variation in RFLP markers associated with root growth in QTLs in Indian upland rice

    Steele, K. A., Moore, B. J., Witcombe, J. R., Virk, D. S. & Price, A. H., 1 Aug 2000, In : International Rice Research Notes. 25, 2, p. 16-17

    Research output: Contribution to journalArticle

  51. Chapter › Research › Not peer-reviewed
  52. Published

    Impact of introduction of modern varieties on crop diversity

    Witcombe, J. R., Joshi, J. D., Virk, D. S., Sthapit, B. R., Lenne, J. M. (ed.) & Wood, D. (ed.), 1 Jan 2011, Agrobiodiversity Management for Food Security: A Critical Review. 2011 ed. CABI Publishing

    Research output: Chapter in Book/Report/Conference proceedingChapter

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