Peanut plants can suffer from drought, leading to lower yields and changes in seed quality. This study looked at how midseason drought affects the amount of arginine, a type of protein, in different peanut varieties. The researchers grew five types of peanuts under two watering conditions for two years. They found that midseason drought increased the arginine content in all peanut varieties tested. This suggests that breeding programs could potentially improve the arginine levels in peanuts to make them more resistant to drought.