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Participatory selection of CWR‐derived salt‐tolerant rice lines adapted to the coastal zone of the Mekong Delta
Author(s) -
Tin Huynh Quang,
Loi Nguyen Huu,
Bjornstad Åsmund,
Kilian Benjamin
Publication year - 2021
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.1002/csc2.20405
Subject(s) - salinity , biology , delta , mekong delta , crop , grain yield , agriculture , agronomy , soil salinity , ecology , environmental science , water resource management , engineering , aerospace engineering
Climate change is affecting agricultural production in the coastal areas of the Mekong Delta through the intrusion of salinity into the rice ( Oryza spp.) fields, where farmers cultivate photoperiod‐sensitive rice varieties with long growth duration and low grain yields. A set of 12 stable crop wild relative (CWR)‐derived rice lines with introgressions from wild rice Oryza rufipogon Griffiths and O. nivara S.D. Sharma & Shastry was evaluated for their phenotypic response to salinity tolerance by a participatory selection approach on farm in the Phuoc Long and Gia Rai districts, Bac Lieu province. The evaluation of the results showed that four lines derived from CWR are well adapted to the local environmental conditions, with high grain yield (>6.5 t ha −1 ), early maturity, and short plant height. These CWR‐derived lines were adopted by farmers and proposed for testing on a larger scale in different areas of the coastal zone.