不同干燥方式对小籽花生萌发及幼苗根系抗氧化系统的影响OA

In order to verify the effects of different drying methods on seed germination and antioxidant system of seedling roots of peanut,the newly harvested small-seeded peanut variety Xianghua 5011 was used as the experimental material at the peanut experimental base of Yongzhou Agricultural Science Research Institute in Hunan Province in 2023.Six drying methods were set up to compare and analyze the moisture content,seed vigor,plasma membrane permeability,and related enzyme activities of the root antioxidant system of peanuts treated with different methods.The results showed that the mois-ture content of peanuts treated with six drying methods was all less than 10%,meeting the peanut storage requirements;the germination rate of peanuts treated with different methods all exceeded 90%,but the germination potential varied greatly,with the shelling and air-drying treatment being significantly higher than other treatments;the plasma membrane permea-bility of peanuts treated with shelling and air-drying and shelling and air-drying was smaller.When soaked for 48 hours,the relative conductivity of peanuts treated with shelling and sun-drying was 2.08 and 2.48 times that of shelling and air-drying and shelling and air-drying treatments,respectively.The relative conductivity of peanuts treated with shelling and sun-drying was 1.94 and 2.31 times that of shelling and air-drying and shelling and air-drying treatments,respective-ly.The MDA content and SOD,POD,CAT,and GR activities in seedling roots showed different changing patterns with the extension of time after sowing,with shelling and air-drying and shelling and air-drying treatments being lower,while other treatments fluctuated greatly before gradually stabilizing.Comprehensive analysis shows that among the traditional drying and seed-saving techniques for small-seeded peanuts,air-drying methods,especially shelling and air-drying,are better for ensuring the quality of peanut seeds in the following year.