[Objective] The aim was to investigate differences in differentiation and regeneration of the explants from different parts of Lilium lancifolium（Yixing Lily） in tissue culture.[Method] The different parts of scale,...[Objective] The aim was to investigate differences in differentiation and regeneration of the explants from different parts of Lilium lancifolium（Yixing Lily） in tissue culture.[Method] The different parts of scale,leaf and root of Yixing Lily were cultured as explants on MS basic medium supplemented with different concentrations of plant growth regulators,so as to compare their capacity to differentiate and regenerate.[Result] The explants had different potential to differentiate（scale root leaf）.The capacity of different scale parts to differentiate was the lower part middle partupper part;the capacity of different leaf parts to differentiate was the leaf base middle part leaf tip;the capacity of different root parts to differentiate was the root base root tip middle part.[Conclusion] Tissue culture could be well applied in propagation of Yixing Lily.展开更多
To solve the problems of microbial contamination and no rooting during the tissue culture of Huperzia serrata, wild seedlings of Huperzia serrata were cultured by indoor hydroponics or soil cultivation methods, then t...To solve the problems of microbial contamination and no rooting during the tissue culture of Huperzia serrata, wild seedlings of Huperzia serrata were cultured by indoor hydroponics or soil cultivation methods, then the stem tips were used in tissue culture. The above operation significantly reduced microbial contamination during tissue culture process. Different types and concentrations of hormones were added into the basic medium MS to screen the optimal formula for induced plantlet growth and rooting. It was found that 1/2MSCO was the best medium on which stem, leaves and roots of tissue culture plantlets of Huperzia serrata grew quickly. At the same time, sand planting was a convenient and effective approach for gemmae propagation of Huperzia serrata, the survival rate of seedlings germinated from gemmae was nearly 100%.展开更多
Effect of explant, site of leaflet, induction period in the dark and combinations of plant growth regulators on direct adventitious bud induction and plant regeneration of Rosa hybrida Samantha was investigated. The r...Effect of explant, site of leaflet, induction period in the dark and combinations of plant growth regulators on direct adventitious bud induction and plant regeneration of Rosa hybrida Samantha was investigated. The results showed that after an induction period of 8 d on MS medium with 1.5 mg L-1 TDZ and 0.05 mg L-1 NAA in the dark and a subculture on MS medium with 0.5 mg L-1 BA and 0.01 mg L-1 NAA under light, the best plant regeneration was obtained and the regeneration frequencies of leaflets and petioles were 51.8 and 10% respectively. There was no significant difference in regeneration ability between leaflets at different sites of the compound leaves, longer time of induction in the dark or high concentration of auxin would cause callus formation, which was disadvantageous for shoot regeneration, and the regeneration frequency was significantly reduced. This regeneration system could be applied for genetic transformation of this cultivar in the future.展开更多
根据香蕉束顶病毒(Banana bunchy top virus,BBTV)复制酶基因保守序列设计特异性探针及引物,建立了BBTV实时荧光PCR(Taq Man real-time PCR)检测方法。结果显示,所建立的检测方法在检测质粒DNA标准品和发病香蕉植株总DNA时,其灵敏度均...根据香蕉束顶病毒(Banana bunchy top virus,BBTV)复制酶基因保守序列设计特异性探针及引物,建立了BBTV实时荧光PCR(Taq Man real-time PCR)检测方法。结果显示,所建立的检测方法在检测质粒DNA标准品和发病香蕉植株总DNA时,其灵敏度均比普通PCR高,且与黄瓜花叶病毒(Cucumber mosaic virus,CMV)和香蕉线条病毒(Banana streak virus,BSV)无交叉反应。同浓度样品进行7次重复性试验,各重复扩增结果所得Ct值的变异系数为0.93%,表明建立的荧光定量PCR检测方法重复性好,Ct值保持稳定。利用所建立的方法检测带毒香蕉吸芽繁殖的组培苗中的BBTV,发现BBTV含量随着继代数的增加而增加,并且组培苗顶部叶片中的含量高于其他部位的叶片。展开更多
Multiplication of Elaeagnus angustifolia L. was examined in vitro successively from a single shootunder the specified condition of different media, plant growth regulators, pH value and sucrose concentration.It was sh...Multiplication of Elaeagnus angustifolia L. was examined in vitro successively from a single shootunder the specified condition of different media, plant growth regulators, pH value and sucrose concentration.It was showed that MMS1 was the most suitable medium on shoot multiplication among 5 media concerned;BAP was the most effective one among all the cytokinin involved, BAP, KN, TDZ and ZT; the explant of thetop half-part from a shoot produced more new shoots than that of the foot half-part did; more new shoots (>2 cm) were produced under 3 % sucrose between the concentrations with top half-part explants; shoots couldgrow well between pH 4.4 and pH 7.0, and the biggest number of shoots was produced in pH 5.6, while inpH 5.8 the maximum rooting rate appeared. As a result, the combination of 0.5 mM BAP and 0.1mM IBAon MMS1 medium induced the maximum shoot multiplication. The number of shoot amplified 3 times in 1month, and 312 shoots (>2 cm) might be theoretically multiplied annually from a single shoot.展开更多
基金Supported by Fund for Scientific Research in Yangtze University(CDKF2283)Program of Engineering Research Center of Wetland Agriculture in the Middle Reaches of the Yangtze River of Ministry of Education~~
文摘[Objective] The aim was to investigate differences in differentiation and regeneration of the explants from different parts of Lilium lancifolium（Yixing Lily） in tissue culture.[Method] The different parts of scale,leaf and root of Yixing Lily were cultured as explants on MS basic medium supplemented with different concentrations of plant growth regulators,so as to compare their capacity to differentiate and regenerate.[Result] The explants had different potential to differentiate（scale root leaf）.The capacity of different scale parts to differentiate was the lower part middle partupper part;the capacity of different leaf parts to differentiate was the leaf base middle part leaf tip;the capacity of different root parts to differentiate was the root base root tip middle part.[Conclusion] Tissue culture could be well applied in propagation of Yixing Lily.
文摘To solve the problems of microbial contamination and no rooting during the tissue culture of Huperzia serrata, wild seedlings of Huperzia serrata were cultured by indoor hydroponics or soil cultivation methods, then the stem tips were used in tissue culture. The above operation significantly reduced microbial contamination during tissue culture process. Different types and concentrations of hormones were added into the basic medium MS to screen the optimal formula for induced plantlet growth and rooting. It was found that 1/2MSCO was the best medium on which stem, leaves and roots of tissue culture plantlets of Huperzia serrata grew quickly. At the same time, sand planting was a convenient and effective approach for gemmae propagation of Huperzia serrata, the survival rate of seedlings germinated from gemmae was nearly 100%.
基金the National Natural Science Foundation of China(30170666).
文摘Effect of explant, site of leaflet, induction period in the dark and combinations of plant growth regulators on direct adventitious bud induction and plant regeneration of Rosa hybrida Samantha was investigated. The results showed that after an induction period of 8 d on MS medium with 1.5 mg L-1 TDZ and 0.05 mg L-1 NAA in the dark and a subculture on MS medium with 0.5 mg L-1 BA and 0.01 mg L-1 NAA under light, the best plant regeneration was obtained and the regeneration frequencies of leaflets and petioles were 51.8 and 10% respectively. There was no significant difference in regeneration ability between leaflets at different sites of the compound leaves, longer time of induction in the dark or high concentration of auxin would cause callus formation, which was disadvantageous for shoot regeneration, and the regeneration frequency was significantly reduced. This regeneration system could be applied for genetic transformation of this cultivar in the future.
文摘Multiplication of Elaeagnus angustifolia L. was examined in vitro successively from a single shootunder the specified condition of different media, plant growth regulators, pH value and sucrose concentration.It was showed that MMS1 was the most suitable medium on shoot multiplication among 5 media concerned;BAP was the most effective one among all the cytokinin involved, BAP, KN, TDZ and ZT; the explant of thetop half-part from a shoot produced more new shoots than that of the foot half-part did; more new shoots (>2 cm) were produced under 3 % sucrose between the concentrations with top half-part explants; shoots couldgrow well between pH 4.4 and pH 7.0, and the biggest number of shoots was produced in pH 5.6, while inpH 5.8 the maximum rooting rate appeared. As a result, the combination of 0.5 mM BAP and 0.1mM IBAon MMS1 medium induced the maximum shoot multiplication. The number of shoot amplified 3 times in 1month, and 312 shoots (>2 cm) might be theoretically multiplied annually from a single shoot.
