Impact of introduction of modern varieties on crop diversity

Agrobiodiversity Management for Food Security: A Critical Review

Volumn , Issue , 2011, Pages 87-98

  Witcombe, J R ^a   Joshi, K D ^b   Virk, D S ^a   Sthapit, B R ^c  

^a BANGOR UNIVERSITY   (United Kingdom)

^b International Maize and Wheat Improvement Center Nepal   (Nepal)

^c BIOVERSITY INTERNATIONAL   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 84871927192     PISSN: None     EISSN: None     Source Type: Book    
DOI: None     Document Type: Chapter

References (20)

1. Brush, S.B. and Meng, E. (1998) Farmers' valuation and conservation of crop genetic resources. Genetic Resources and Crop Evolution 45, 139-150.
2. Ford-Lloyd, B.V., Brar, D., Khush, G.S., Jackson, M.T. and Virk, P.S. (2009) Genetic erosion over time of rice landrace agrobiodiversity. Plant Genetic Resources 7, 163-168.
3. Frankel, O.H., Brown, A.D.H. and Burdon, J.J. (1995) The Conservation of Plant Diversity. Cambridge University Press, Cambridge.
4. Gollin, D. and Smale, M. (1999) Valuing genetic diversity: crop plants and agroecosystems. In: Collins, W.W. and Qualset, C.O. (eds) Biodiversity in Agroecosystems. CRC Press, Boca Raton, Florida, pp. 237-265.
5. Joshi, K.D. and Witcombe, J.R. (2003) The impact of participatory plant breeding (PPB) on landrace diversity: a case study for high-altitude rice in Nepal. Euphytica 134, 117-125.
6. Joshi, K.D., Sthapit, B.R. and Witcombe, J.R. (2001) How narrowly adapted are the products of decentralised breeding? The spread of rice varieties from a participatory plant breeding programme in Nepal. Euphytica 122, 589-597.
7. Maurya, D.M. (1989) The innovative approach of Indian farmers. In: Chambers, R., Pacey, A. and Thrupp, L.A. (eds) Farmer First: Farmer Innovation and Agricultural Research. Intermediate Technology Publications, London, pp. 9-13.
8. Ravishankar, T. and Selvam, V. (1996) Contributions of tribal communities in the conservation of traditional cultivars. In: Sperling, L. and Loevinsohn, M. (eds) Proceedings of Conference on Using Diversity and Maintaining Genetic Resources on Farm, New Delhi, June 1995. International Development Research Centre (IDRC), pp. 268-274.
9. Rosenzweig, M.R. and Stark, O. (1989) Consumption smoothing, migration, and marriage: evidence from rural India. Journal of Political Economy 97, 905-926.
10. Satheesh, P.V. (1996) Genes, gender and biodiversity: Deccan Development Society's community seed banks. In: Sperling, L. and Loevinsohn, M. (eds) Proceedings of Conference on Using Diversity and Maintaining Genetic Resources on Farm, New Delhi, June 1995. International Development Research Centre (IDRC), pp. 268-274.
11. Souza, E., Fox, P.N., Byerlee, D. and Skovmand, B. (1994) Spring wheat diversity in irrigated areas of two developing countries. Crop Science 34, 774-783.
12. Steele, K.A., Edwards, G., Zhu, J. and Witcombe, J.R. (2004) 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. Theoretical and Applied Genetics 109, 1247-1260.
13. Steele, K.A., Gyawali, S., Joshi, K.D., Shrestha, P., Sthapit, B.R. and Witcombe, J.R. (2009) Has the introduction of modern rice varieties changed rice genetic diversity in a high-altitude region of Nepal?. Field Crops Research 113, 24-30.
14. Virk, D.S. and Witcombe, J.R. (2007) Trade-offs between on-farm varietal diversity and highly client-oriented breeding - a case study of upland rice in India. Genetic Resources and Crop Evolution 54, 823-835.
15. Virk, D.S., Singh, D.N., Kumar, R., Prasad, S.C., Gangwar, J.S. and Witcombe, J.R. (2003) Collaborative and consultative participatory plant breeding or rice for the rainfed uplands of eastern India. Euphytica 132, 95-108.
16. Witcombe, J.R. (1975) Wheat and barley from two Himalayan regions. Euphytica 24, 431-434.
17. Witcombe, J.R. (1999) Does plant breeding lead to a loss of genetic diversity? In: Wood, D. and Lenné, J.M. (eds) Agrobiodiversity: Characterization, Utilization and Management. CAB International, Wallingford, UK, pp. 245-272.
18. Witcombe, J.R. and Virk, D.S. (2001) Number of crosses and population size for participatory and classical plant breeding. Euphytica 122, 451-462.
19. Witcombe, J.R., Joshi, A., Joshi, K.D. and Sthapit, B.R. (1996) Farmer participatory crop improvement. I: Varietal selection and breeding methods and their impact on biodiversity. Experimental Agriculture 32, 445-460.
20. Witcombe, J.R., Joshi, K.D., Gyawali, S., Musa, A., Johansen, C., Virk, D.S. and Sthapit, B.R. (2005) Participatory plant breeding is better described as highly client-oriented plant breeding. I. Four indicators of clientorientation in plant breeding. Experimental Agriculture 41, 299-319.