| The purpose of this paper is to study the RVA spectrum of starch of different rice varieties treated with exogenous selenium. The completely random design was used, at high altitude mountain laboratories（800 m）above, different selenium tests were carried out, RVA spectrum of rice starch after harvest was determined. Results showed that the peak viscosity, cold plasma viscosity, peak value, breakdown value and response time of TaiXuan 1 were higher than those of JingXuan 1, hot paste viscosity was lower than JingXuan 1, gelatinization temperature was not obvious different. When the dosage of selenium was 3.00 g /hm2, the peak viscosity, hot paste viscosity and cold mortar viscosity decreased, and then increased. When the closage of selenium was 6.00-15.00 g /hm2. The recovery value, disintegration value and peak time increased compared to the control. However, it had no significant influence on all the indicators of TaiXuan 1, and only had a significant influence on the viscosity and recovery value of hot pulp of JingXuan 1. The selenium fertilizer was positively correlated with the gelatinization temperature of RVA spectrum, and the correlation coefficient was 0.71534. |
