To explore the effect of temperature change on seed germination and seedling growth of Pinus armandii.The seeds were treated at(15±2)℃,(20±2)℃,(25±2)℃and(30±2)℃to study the germination rate,soluble sugar,soluble protein and seedling growth.The results showed that different temperatures had significant effects on seed germination and seedling growth.With the in-crease of treatment temperature,seed germination rate,germination potential,germination index,root length,stem length and dry matter of seedlings increased first and then decreased,and SOD,POD and CAT activities decreased first and then increased.There-fore,the seed germination rate of Pinus armandii cultured at(25±2)℃is the best,and the growth of seedlings is the best,which is a more suitable germination temperature.
维普
万方数据