Preliminary study on three types of ultra low temperature preservation of Toona sinensis seeds
Toona sinensis is an excellent resource plant with extremely high application value.In order to stabilize the pres-ervation of excellent Toona sinensis germplasm resources,this study used three ultra-low temperature preservation methods to treat Toona sinensis seeds.The germination rate and physiological and biochemical indicators were tested to compare the advan-tages and disadvantages of the three low-temperature preservation methods for Toona sinensis seeds.The results showed that af-ter freezing,the superoxide dismutase activity and catalase activity of Toona sinensis seeds increased,while the peroxidase activ-ity and MDA content decreased.However,there was no significant difference in germination rate and soluble protein content be-tween the vitrification freezing group and the control group,so vitrification freezing method is more suitable for ultra-low tem-perature freezing preservation of Toona sinensis seeds.
Toona sinensizs seedsultra-low temperature preservationgermination ratephysiological and biochemical in-dicators
NETL
NSTL
万方数据
