Participatory selection of CWR?derived salt?tolerant rice lines adapted to the coastal zone of the Mekong Delta

Climate change is affecting agricultural production in the coastal areas of Mekong Delta through intrusion salinity into rice (Oryza spp.) fields, where farmers cultivate photoperiod-sensitive varieties with long growth duration and low grain yields. A set 12 stable crop wild relative (CWR)-derived lines introgressions from Oryza rufipogon Griffiths O. nivara S.D. Sharma & Shastry was evaluated for their phenotypic response to tolerance by a participatory selection approach on farm Phuoc Long Gia Rai districts, Bac Lieu province. The evaluation results showed that four derived CWR are well adapted local environmental conditions, high yield (>6.5 t ha?1), early maturity, short plant height. These CWR-derived were adopted proposed testing larger scale different zone.