[Objective] The study aimed to compare difference on the heat-resistantce between of wild red clover and the existing varieties at home and abroad.[Method] With 9 wild red clover(CQ1-9),2 foreign varieties(Rider and Dory) and a domestic variety(Wuxi) as the tested materials,the physiological indicators and heat-resistance of 12 accessions of red clover were evaluated through the pot test and under the artificial simulation high-temperature.[Result] With the delay of the heat stress time,the survival rate of...