a1 Centre for Arid Zone Studies, University of Wales Bangor, Gwynedd LL57 2UW, UK
a2 Krishak Bharati Cooperative Indo British Rainfed Farming Project (KRIBP), Dahod, Gujarat, 389151, India
a3 Lumle Agricultural Research Centre, PO Box 1, Pokhara, Nepal
Farmer participatory approaches for the identification or breeding of improved crop cultivars can be usefully categorized into participatory varietal selection (PVS) and participatory plant breeding (PPB). Various PVS and PPB methods are reviewed. PVS is a more rapid and cost-effective way of identifying farmer-preferred cultivars if a suitable choice of cultivars exists. If this is impossible, then the more resource-consuming PPB is required. PPB can use, as parents, cultivars that were identified in successful PVS programmes. Compared with conventional plant breeding, PPB is more likely to produce farmer-acceptable products, particularly for marginal environments. The impact of farmer participatory research on biodiversity is considered. The long-term effect of PVS is to increase biodiversity, but where indigenous variability is high it can also reduce it. PPB has a greater effect on increasing biodiversity although its impact may be limited to smaller areas. PPB can be a dynamic form of in situ genetic conservation.
(Accepted March 18 1996)
c1 Author to whom correspondence should be addressed.