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摘要: 为了丰富柳树分子标记的手段,以旱柳Salix matsudana为材料,通过正交实验设计法,获得适于旱柳的相关序列扩增多态性(sequence-related amplified polymorphism,SRAP)-聚合酶链式反应(polymerase chain reaction,PCR)体系;对SRAP-PCR扩增过程中的2次退火温度进行优化。结果如下:优化反应体系,25.00 L反应液中,含20.84 nkat的Taq酶,2.00 L Mg2+(25 .00 mmolL-1),2.50 L 碱基混合物(脱氧核糖核苷酸dNTPs,各2.50 mmolL-1),1.50 L引物(20.00 molL-1),100.00 ng DNA模板,2.50 L 10 Taq酶缓冲液。扩增程序,94 ℃ 2.0 min;94 ℃ 1.0 min,38 ℃ 1.0 min,72 ℃ 1.5 min,5个循环;94 ℃ 1.0min,54 ℃ 1.0 min,72 ℃ 1.5 min,30个循环;72 ℃ 10.0 min。经聚丙烯酰胺凝胶电泳(PAGE)检测,特征性条带清晰,信息量大,完全可以用于旱柳基因组的研究分析。图4表2参12
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关键词:
- 林木育种学 /
- 旱柳 /
- 相关序列扩增多态性(SRAP) /
- 正交实验设计
Abstract: To enrich the molecular marker method for willow trees,an improved reaction system from a sequence-related amplified polymorphism-polymerase chain reaction (SRAP-PCR) of Salix matsudana(Hankow willow) was obtained with an orthogonal design. In addition,the temperatures for two annealing methods were optimized in the PCR amplifier and a polyacrylamide gel electrophoresis(PAGE) was employed. Results showed that the reaction system was 20.84 nkat Taq,2.00 L Mg2+(25.00 mmolL-1),2.50 L deoxyribonucleotide triphosphates (dNTPs)(2.50 mmolL-1 each),1.50 L primer(20.00 molL-1),100.00 ng template,and 2.50 L 10 Taq buffer in 25.00 L. The program was as follows:94 ℃ for 2.0 min;then,for 5 cycles,94 ℃ for 1.0 min,38 ℃ for 1.0 min,and 72 ℃ for 1.5 min;next,at 30 cycles,94 ℃ for 1.0 min,54 ℃ for 1.0 min,and 72 ℃ for 1.5 min;and finally 72 ℃ for 10.0 min. Results of PAGE showed that clarity and amount of information increased with the new procedure. Thus,this superior method could be used for research on S. matsudana.[Ch,4 fig. 2 tab. 12 ref.]-
Key words:
- forest tree breeding /
- Salix matsudana /
- SRAP /
- orthogonal design
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2010.06.024
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