Index Screening and Comprehensive Evaluation for Drought Resistance of Peanut Varieties at Germination Stage

Under PEG solution simulated soil drought condition,the experiments were conducted to study on the response to water stress and estimate the drought resistance of twenty-seven varieties at germination stage.The results showed that the characters of peanut response to water stress were different among every variety at germination stage.The response of root length,rooting ratio,root dry weight and germinating rate of these varieties to water stress treatments were obviously different.These indexes were significantly or very significantly related to colligate drought resistance.We found 8130,Jihua No.2,Jihua No.4,Huayu No.27,Huayu No.25 and Luhua No.14 had better drought resistance.These results came from field observation and inside of laboratory the bourgeon method with high PEG concentration solution is a quick,simple and accurate method for drought-resistance identification.