Poor adventitious root formation is a major obstacle in micropropagation and in conventional propagation. The effects of LaCl_3 on root growth and deferring the root ageing of peach plantlet in vitro were investigated...Poor adventitious root formation is a major obstacle in micropropagation and in conventional propagation. The effects of LaCl_3 on root growth and deferring the root ageing of peach plantlet in vitro were investigated. The results show that the optimum concentration of LaCl_3 (2.5 μmol·L -1) in the rooted medium can significantly increase the rooting rate, the root length and the fresh weight, promote the activities of superoxide dismutase (SOD); catalase (CAT) and peroxidase (POD) and decrease the production rate of O_2 ·-, the malondialdehyde (MDA) contents and the plasma membrane permeability. There are important theory meaning and practical value in applying LaCl_3 in the rooting medium to raise the rate of rooting and transplant for stone fruit tree.展开更多
文摘Poor adventitious root formation is a major obstacle in micropropagation and in conventional propagation. The effects of LaCl_3 on root growth and deferring the root ageing of peach plantlet in vitro were investigated. The results show that the optimum concentration of LaCl_3 (2.5 μmol·L -1) in the rooted medium can significantly increase the rooting rate, the root length and the fresh weight, promote the activities of superoxide dismutase (SOD); catalase (CAT) and peroxidase (POD) and decrease the production rate of O_2 ·-, the malondialdehyde (MDA) contents and the plasma membrane permeability. There are important theory meaning and practical value in applying LaCl_3 in the rooting medium to raise the rate of rooting and transplant for stone fruit tree.
