The Physiological And Biochemical Study Of Psathrostachys Perinnis And Hedysarum Laeve Maxim Seeds During Ultra-dried Storage

By drying with silica,different moisture content seeds of psathrostachys perinnis were got. A study on physiological changes were conducted under ultra-drying treatment and storage. The results showed that, the psathrostachys perinnis seeds viability and POD activity were the hightest when they were stored at 45℃,with 3.6% of seeds moisture content. While the electrical conductivity and the content of MDA of the seeds with 5.4% of seeds moisture contentwas the lowest, and SOD activity of the seeds was the hightest with 5.4% of seeds moisture content during the storage. This indicated that, the optimum storage moisture content was 3.6% and 5.4% at 45℃. When they were stored at 20℃, the seeds viability, SOD activity were the hightest with 5.4% of seeds moisture content, and the electrical conductivity and the content of MDA of the seeds were the lowes with 4.5% of seeds moisture content during the storage period. This showed that, the optimum moisture content was 4.5% and 2.4% stored at 20℃. the hedysarum laeve seeds viability and SOD activity and the content of GSH of the seeds were the hightest when they were stored at 45℃,with 7.4% of seeds moisture content. While the CAT activity and the content of MDA of the seeds with 6.9% of seeds moisture content was the lowest during the storage. This indicated that, the optimum storage moisture content was 7.4% and 6.9% at 45℃. When they were stored at 20℃, the seeds viability, were the hightest with 5.8% of seeds moisture content, and the electrical conductivity and the content of MDA of the seeds were the lowes during the storage period. While the POD activity with 6.9% of seeds moisture content was the hightest during the storage.This showed that, the optimum moisture content was 5.8% stored at 20℃.