以神农香菊(Dendranthemaindicum var. aromaticum)带腋芽的茎段为外植体,研究不同种类和质量浓度生长调节物质对神农香菊茎段萌发以及再生的影响。结果表明:神农香菊茎段萌发的最佳诱导培养基为MS+6-BA0.1mg·L-1+NAA0.1mg·L...以神农香菊(Dendranthemaindicum var. aromaticum)带腋芽的茎段为外植体,研究不同种类和质量浓度生长调节物质对神农香菊茎段萌发以及再生的影响。结果表明:神农香菊茎段萌发的最佳诱导培养基为MS+6-BA0.1mg·L-1+NAA0.1mg·L-1,萌发率为90%;神农香菊茎段增殖最佳培养基为MS+6-BA0.3mg·L-1+NAA0.1mg·L-1,增殖倍数为4.1;最佳生根培养基为MS+NAA0.3mg·L-1,生根率为100%。展开更多
The methanolic extract from a Chinese endemic Chrysanthemum plant, Dendranthema indicum var. aromaticum, was found to show high antifeeding activity against Pieris brassicae L., and by bioassay-guided separation, the ...The methanolic extract from a Chinese endemic Chrysanthemum plant, Dendranthema indicum var. aromaticum, was found to show high antifeeding activity against Pieris brassicae L., and by bioassay-guided separation, the ac-tive component, B-ring-homo-tonghaosu, 2-(2’,4’-hexadiynylidene)-1,6-dioxaspiro-[4,5]-dec-3-ene (2) was isolated. Its structure was elucidated by comparing its spectroscopic data with those of 2 reported in the literatures. Further-more new convenient total synthesis methods of B-ring-homo-tonghaosu were also developed to confirm its struc-ture and make its further application in crop protection available. In addition, extensive comparison of spectroscopic data showed that the structure of compound 21 reported in literature should be revised to 2.展开更多
文摘以神农香菊(Dendranthemaindicum var. aromaticum)带腋芽的茎段为外植体,研究不同种类和质量浓度生长调节物质对神农香菊茎段萌发以及再生的影响。结果表明:神农香菊茎段萌发的最佳诱导培养基为MS+6-BA0.1mg·L-1+NAA0.1mg·L-1,萌发率为90%;神农香菊茎段增殖最佳培养基为MS+6-BA0.3mg·L-1+NAA0.1mg·L-1,增殖倍数为4.1;最佳生根培养基为MS+NAA0.3mg·L-1,生根率为100%。
基金the National Natural Science Foundation of China (Grant Nos. 29672083, 20072043), Chinese Academy of Sciences, the State Ministry of Science and Technology (No. G2000077502), Shanghai Committee of Science and Technology and the
文摘The methanolic extract from a Chinese endemic Chrysanthemum plant, Dendranthema indicum var. aromaticum, was found to show high antifeeding activity against Pieris brassicae L., and by bioassay-guided separation, the ac-tive component, B-ring-homo-tonghaosu, 2-(2’,4’-hexadiynylidene)-1,6-dioxaspiro-[4,5]-dec-3-ene (2) was isolated. Its structure was elucidated by comparing its spectroscopic data with those of 2 reported in the literatures. Further-more new convenient total synthesis methods of B-ring-homo-tonghaosu were also developed to confirm its struc-ture and make its further application in crop protection available. In addition, extensive comparison of spectroscopic data showed that the structure of compound 21 reported in literature should be revised to 2.
