[Effects of relatively high temperature at grain-filling stage on rice grain's starch viscosity profile and magnesium and potassium contents].

With rice cultivars Yangdao 6 (Indica) and Wuyujing 3 (Japonica) as test materials, the effects of relatively high temperature (RHT, mean temperature 30 degrees C) at grain-filling stage (GFS) on the starch viscosity profile and magnesium (Mg) and potassium (K) contents of rice grain were studied in a phytotron. Four temperature treatments were installed, i.e.