[Objectives] To study the polyphenol oxidase (PPO) activity and total phenol content of Docynia indica .[Methods] The tender branches and petioles of the medicinal and edible plant D. indica were used as experimental ...[Objectives] To study the polyphenol oxidase (PPO) activity and total phenol content of Docynia indica .[Methods] The tender branches and petioles of the medicinal and edible plant D. indica were used as experimental materials, and the annual changes of total phenol content and polyphenol oxidase (PPO) activity were analyzed.[Results] pH 7.0 was the optimum value of polyphenol oxidase activity in D. indica plants;the best substrate was catechol with the concentration of 0.15 mol/L;the optimum temperature was 25 ℃.[Conclusions] The total phenol content of D. indica plants was the lowest in April, May and September of each year. The polyphenol oxidase activity of D. indica plants at flowering and fruiting stage was significantly higher than that at pre-flowering stage.展开更多
[Objectives]To study the culture of callus produced by the leaves of the ethnic medicine‘E Se’,the induction of adventitious buds and the regeneration system of tissue culture seedlings.[Methods]Multi-factor orthogo...[Objectives]To study the culture of callus produced by the leaves of the ethnic medicine‘E Se’,the induction of adventitious buds and the regeneration system of tissue culture seedlings.[Methods]Multi-factor orthogonal experiment was used to design and analyze.[Results]The best medium for callus induction was MS+2.0 mg/L 6-BA+0.1 mg/L 2,4-D.By comparing the effects of cytokinin 6-BA,KT and TDZ on induction of adventitious bud differentiation,it was found that the optimum medium for adventitious bud regeneration was MS+0.5 mg/L 6-BA+0.5 mg/L KT+0.15 mg/L IBA.Finally,adding 0.2 mg/L IBA(0.1 or 0.2 mg/L)to MS medium could effectively make regenerated seedlings produce roots,and the efficiency was more than 70%.[Conclusions]It laid a foundation for the large-scale cultivation of the seedlings of the ethnic medicine‘E Se’and the promotion of their artificial cultivation.展开更多
基金Supported by Science and Technology Program of Sichuan Province(2018NZ0091)Special Project of Sichuan Provincial Public-Interest Scientific Institution Basal Research FundOpen Fund for Key Laboratory of Coarse Cereal Processing,Ministry of Agriculture and Rural Affairs(2018CC12)
文摘[Objectives] To study the polyphenol oxidase (PPO) activity and total phenol content of Docynia indica .[Methods] The tender branches and petioles of the medicinal and edible plant D. indica were used as experimental materials, and the annual changes of total phenol content and polyphenol oxidase (PPO) activity were analyzed.[Results] pH 7.0 was the optimum value of polyphenol oxidase activity in D. indica plants;the best substrate was catechol with the concentration of 0.15 mol/L;the optimum temperature was 25 ℃.[Conclusions] The total phenol content of D. indica plants was the lowest in April, May and September of each year. The polyphenol oxidase activity of D. indica plants at flowering and fruiting stage was significantly higher than that at pre-flowering stage.
基金Supported by Science and Technology Program of Sichuan Province(2018NZ0091)Special Project of Sichuan Provincial Public-Interest Scientific Institution Basal Research Fund+1 种基金Open Fund for Key Laboratory of Coarse Cereal Processing,Ministry of Agriculture and Rural Affairs(2018CC12)Scientific Research Projects of Sichuan Province Traditional Chinese Medicine Administration(2018KF007)
文摘[Objectives]To study the culture of callus produced by the leaves of the ethnic medicine‘E Se’,the induction of adventitious buds and the regeneration system of tissue culture seedlings.[Methods]Multi-factor orthogonal experiment was used to design and analyze.[Results]The best medium for callus induction was MS+2.0 mg/L 6-BA+0.1 mg/L 2,4-D.By comparing the effects of cytokinin 6-BA,KT and TDZ on induction of adventitious bud differentiation,it was found that the optimum medium for adventitious bud regeneration was MS+0.5 mg/L 6-BA+0.5 mg/L KT+0.15 mg/L IBA.Finally,adding 0.2 mg/L IBA(0.1 or 0.2 mg/L)to MS medium could effectively make regenerated seedlings produce roots,and the efficiency was more than 70%.[Conclusions]It laid a foundation for the large-scale cultivation of the seedlings of the ethnic medicine‘E Se’and the promotion of their artificial cultivation.
