Division of Natural Sciences and Mathematics;
University of the Philippines Visayas Tacloban College;
Leyte 6500;
the Philippines;
Institute of Biological Sciences;
University of the Philippines Los Banos College;
Laguna 4031;
the Philippines;
International Rice Research Institute;
DAPO Box 7777;
Metro Manila;
the Philippines;
Na^+/K^+; ratio; proline; reproductive; stage; rice; salinity; stress; reduced; ascorbate; pollen; viability;