The effects of 6-benzylaminopurine(6-BA) on several physiological indexes of Caryota mitis and C.obtusa seedlings treated at varied temperatures were conducted,the leaves of the two palm species were sprayed with 0,25...The effects of 6-benzylaminopurine(6-BA) on several physiological indexes of Caryota mitis and C.obtusa seedlings treated at varied temperatures were conducted,the leaves of the two palm species were sprayed with 0,25,50 and 100 mg · L^(-1)6-BA solutions,the activities of superoxide dismutase(SOD),peroxidase(POD),and the contents of malondialdehyde(MDA),proline,soluble protein,chlorophyll and chlorophyll a/b were determined under 25℃,5℃ and 25℃ for 24 h,respectively.The dynamics of a series of important physiological components derived from the leaves were studied.It was indicated that all the above mentioned physiological indexes varied with different concentrations of 6-BA and temperature.The fuzzy comprehensive evaluation values for different concentrations of 6-BA at the recovery temperature 25℃ were 0.33,0.28,0.92 and 0.33,respectively for C.mitis,and 0.20,0.49,0.56 and 0.63,respectively for C.obtusa.It was concluded that leaves sprayed with different concentrations of 6-BA could affect the cold tolerance of palm seedlings.The optimal concentration of 6-BA was different for different palm species.展开更多
基金Supported by Fund of Xiamen Municipal Science&Technology Commision(3502Z20092019)
文摘The effects of 6-benzylaminopurine(6-BA) on several physiological indexes of Caryota mitis and C.obtusa seedlings treated at varied temperatures were conducted,the leaves of the two palm species were sprayed with 0,25,50 and 100 mg · L^(-1)6-BA solutions,the activities of superoxide dismutase(SOD),peroxidase(POD),and the contents of malondialdehyde(MDA),proline,soluble protein,chlorophyll and chlorophyll a/b were determined under 25℃,5℃ and 25℃ for 24 h,respectively.The dynamics of a series of important physiological components derived from the leaves were studied.It was indicated that all the above mentioned physiological indexes varied with different concentrations of 6-BA and temperature.The fuzzy comprehensive evaluation values for different concentrations of 6-BA at the recovery temperature 25℃ were 0.33,0.28,0.92 and 0.33,respectively for C.mitis,and 0.20,0.49,0.56 and 0.63,respectively for C.obtusa.It was concluded that leaves sprayed with different concentrations of 6-BA could affect the cold tolerance of palm seedlings.The optimal concentration of 6-BA was different for different palm species.
