【摘要】 以田间生长的苜蓿为材料进行卡那霉素(Kan)涂抹叶片筛选转基因植株最佳浓度和适宜观察时间的研究,并对筛选的抗性植株进行了PCR检测验证。结果表明,Kan叶片涂抹田间筛选的最佳浓度为1000mg/L,观察时间以12天为宜;经PCR检测验证,Kan筛选抗性苗的阳性检测率达到93.8%。研究建立了一种在田间对转基因苜蓿进行大量筛选的简便方法,对于转基因苜蓿材料的选育具有重要利用价值。更多还原

【Abstract】 Kanamycin can be used to select the transformed plants containing the nptⅡgene. In order to assay the optimal screening concentration to nptⅡ gene, Kanamycin was smeared to the surface of the transformed alfalfa leaves. It showed that 1000 mg/L Kanamycin with 12 days’selecting was best. This method was compared with PCR as well, and the results suggested that the equivalent ratio was 93.8 % in the resistant plants. Accordingly, a simple method of filed screening gene transgenic alfalfa has been made. This result is very useful for the transgenic alfalfa to be screened and cultivated.更多还原