The indica rice tends to be more thermotolerant than japonica rice according to the change of morphological symptoms and physiological assay.

• 本试验选用22个不同籼、稉型水稻品种，先进行高温逆境下外观变化及四种生理指标之测定，结果显示籼稻对高温之耐受性普遍较稉稻佳。