Ultra-dried storage of Stylosanthes guianensis seeds
Stylosanthes guianensis was used as material to study the physiochemical change of its seeds treated with ultra-dry storage, and the parameters of ultra dry storage. Results showed that the ultra-dried seeds of Stylosanthes guianensis with moisture content of 3.17 % were highly tolerant of aging after treated at 50℃ for 15 days. After 2 years of storage, there was no difference in the percentage of germination and the vigor index among the treatments of ultra-dried seeds stored under an ambient temperature and of seeds with moisture content of 8.10 % stored at 5℃ and -20℃ respectively. Compared with the control, dehydrogenase activity and respiration rate of the ultra-dried seeds were increased by 33.5 % and 33.0 % respectively, and the electric conductivity and malonadehyde of the ultra-dried seeds decreased by 43.0 % and 50.0 % respectively, lower than that of the control. All these results showed that ultra-dried treatment can increase the storability of Stylosanthes guianensis seeds.