Abstract: The effects of high temperature stress on heat injury index,recovery index,electrolytic leakage,proline and soluble sugar content in eggplant ( Solanum melongena ) seedling of 14 varieties were investigated.The result showed that high temperature stress at eggplant seedling stage led to the increase of electrolytic leakage and proline and soluble sugar content,the aggravation of heat injury index,but the decrease of soluble sugar content.It was proposed that heat injury index,recovery index,electrolytic leakage and proline content might be suitable for selecting heat-tolerant eggplant genotype in breeding programe except soluble sugar content.In this research,It also indicated that N1(Nongyouqie) was the most heat-tolerant to heat stress,K11(Kuaiyuanqie),R12 (Erminqie),C13(Chiqie),G14(Gangguohongqie)were the most sensitive to heat stress,while C2(Cihongqie),F3(Fengyan No.2),F4(Fulongqie),Y5(Yuanza No.2),X6(Xianluqie),B7(Beijignliuyeqie),Y8(Yeqie No.2),N9(Nianmoqie),and B11(Beijingwuyeqie) were the intermediate.

Key words: Rice, Amylose, Ecological environment, Prediction model