In order to improve the resistance of Euonymus japonicus , its ability of adventitious shoots regenerating from inter_node stem_segment were researched on MS medium in vitro . The effect of both plant growth regulator...In order to improve the resistance of Euonymus japonicus , its ability of adventitious shoots regenerating from inter_node stem_segment were researched on MS medium in vitro . The effect of both plant growth regulators and carbon resources in media on adventitious shoots differentiating was studied. Regenerating system of E. japonicus was established successfully. Adventitious shoots were highly obtained from inter_node explants inoculated on MS media supplemented with 6_BA 1 7 mg\5L -1 + IBA 0 005 mg\5L -1 or 6_BA 1 9 mg\5L -1 + IBA 0 03 mg\5L -1 . The regenerating ratio reached to 52 4% and 46 7% respectively. Media for inducing adventitious roots were 1/2MS+ IAA 0 5 mg·L -1 . Adventitious shoots originated from surface tissue of inter_node stem_segment.展开更多
建立了木枣无菌试管苗快繁体系,以无菌苗叶片为外植体,对影响离体叶片不定芽直接再生的因素进行了研究.试验结果表明,TDZ比BA能更有效地诱导叶片不定芽的再生;褐化是抑制不定芽再生频率提高的关键因子,培养基中添加PVP、V c及改变生长...建立了木枣无菌试管苗快繁体系,以无菌苗叶片为外植体,对影响离体叶片不定芽直接再生的因素进行了研究.试验结果表明,TDZ比BA能更有效地诱导叶片不定芽的再生;褐化是抑制不定芽再生频率提高的关键因子,培养基中添加PVP、V c及改变生长素的种类和浓度均不能促进不定芽再生;添加A gNO3能够减轻褐化并可以大幅度提高再生频率,同时培养初期经过3周避光培养更有利于提高再生效率.因此,以附加2.0 m g/L TDZ和0.2 m g/L IBA的M S培养基,并添加5.0 m g/L A gNO3,可以高效诱导木枣离体叶片不定芽再生,再生频率最高达98.3%.不定芽在附加0.2 m g/L IBA和0.5 m g/L GA3的M S培养基上进行继代伸长培养,当不定芽长至3 cm时,转接至附加0.4 m g/L IBA的1/2 M S培养基上可以良好地诱导生根.展开更多
文摘In order to improve the resistance of Euonymus japonicus , its ability of adventitious shoots regenerating from inter_node stem_segment were researched on MS medium in vitro . The effect of both plant growth regulators and carbon resources in media on adventitious shoots differentiating was studied. Regenerating system of E. japonicus was established successfully. Adventitious shoots were highly obtained from inter_node explants inoculated on MS media supplemented with 6_BA 1 7 mg\5L -1 + IBA 0 005 mg\5L -1 or 6_BA 1 9 mg\5L -1 + IBA 0 03 mg\5L -1 . The regenerating ratio reached to 52 4% and 46 7% respectively. Media for inducing adventitious roots were 1/2MS+ IAA 0 5 mg·L -1 . Adventitious shoots originated from surface tissue of inter_node stem_segment.
文摘建立了木枣无菌试管苗快繁体系,以无菌苗叶片为外植体,对影响离体叶片不定芽直接再生的因素进行了研究.试验结果表明,TDZ比BA能更有效地诱导叶片不定芽的再生;褐化是抑制不定芽再生频率提高的关键因子,培养基中添加PVP、V c及改变生长素的种类和浓度均不能促进不定芽再生;添加A gNO3能够减轻褐化并可以大幅度提高再生频率,同时培养初期经过3周避光培养更有利于提高再生效率.因此,以附加2.0 m g/L TDZ和0.2 m g/L IBA的M S培养基,并添加5.0 m g/L A gNO3,可以高效诱导木枣离体叶片不定芽再生,再生频率最高达98.3%.不定芽在附加0.2 m g/L IBA和0.5 m g/L GA3的M S培养基上进行继代伸长培养,当不定芽长至3 cm时,转接至附加0.4 m g/L IBA的1/2 M S培养基上可以良好地诱导生根.