Evaluation on Fresh Seed Dormancy of Peanut Varieties

Seed dormancy is one of the important agronomic traits of crops.In this study,we carried out seed germination test of 31 fresh-harvested peanut varieties(lines) to estimate their dormancy characteristics.The results showed that germination(both germinated and germinating) rates can be used as the indicator of seed dormancy evaluation.The variation range of germination rate was 0~71.11%,with 20 varieties less than 10.0% and 6 varieties(Xu9641,etc.) low to zero,which showed strong dormancy character.On the contrary,the germination rate of Qihai was 71.11%,which showed weak dormancy.Correlation analysis showed that seed dormancy was significantly related to the legume shape,grain shape and single leaf length: varieties with long grain or long leaf length showed strong dormancy.Other agronomic traits were not significantly correlated to the dormancy characteristic.