[Objective] Study on the genetic diversity in wild populations of Poacynum hendersonii.[Method] Random amplified polymorphic DNA(RAPD)technique was employed to analyze the genetic diversity in five wild populations of...[Objective] Study on the genetic diversity in wild populations of Poacynum hendersonii.[Method] Random amplified polymorphic DNA(RAPD)technique was employed to analyze the genetic diversity in five wild populations of P.hendersonii sampled from Xinjiang,Gansu and Qinghai provinces.[Result] Totally 165 clear and repeatable bands were generated in RAPD reaction by using 20 primers screened from 80 primers,of which 110 were polymorphic,accounting for 66.67%.At species level,Nei's gene diversity index(H),Shannon's information index(I)and genetic differentiation coefficient(Gst)were 0.220 5,0.304 7 and 0.908 2,respectively.P.hendersonii germplasm resources share a high level of genetic diversity,and genetic differentiation mainly exists among the populations.Results from genetic distances and cluster analysis showed that relationships among P.hendersonii populations were to some extent related with their geographical and climatic characters.[Conclusion] This study suggests that the conservation of P.hendersonii should focus on the protection of many populations,particularly the Qinghai population.展开更多
目的:建立同时测定大鼠血浆中槲皮素-3-O-槐糖苷、罗布麻甲素、金丝桃苷、芸香苷4种黄酮类成分含量的方法。方法:取8只SD大鼠,ig大花罗布麻叶提取物混悬液,0.1 g/kg(以提取物计)。给药后1 h于眼眶采血1 m L,离心后采用微乳液相色谱法(ME...目的:建立同时测定大鼠血浆中槲皮素-3-O-槐糖苷、罗布麻甲素、金丝桃苷、芸香苷4种黄酮类成分含量的方法。方法:取8只SD大鼠,ig大花罗布麻叶提取物混悬液,0.1 g/kg(以提取物计)。给药后1 h于眼眶采血1 m L,离心后采用微乳液相色谱法(MELC)测定4种黄酮类成分含量。色谱柱为Zorbax SB-C18,流动相为微乳体系[月桂醇聚氧乙烯醚-正丁醇-乙酸乙酯-三乙胺-水(体积比为2.5∶3.0∶1.7∶0.3∶92.5,p H=5.0)],流速为0.8 m L/min,柱温为30℃,检测波长为360 nm,进样量为10μL,内标为岩白菜素。同时与使用常规有机溶剂为流动相的高效液相色谱法(HPLC,流动相为0.2%磷酸水溶液-乙腈,梯度洗脱,其余条件同MELC法)进行相关比较。结果:大鼠血浆中槲皮素-3-O-槐糖苷、罗布麻甲素、金丝桃苷、芸香苷检测质量浓度线性范围为10~1 000 ng/m L(r≥0.998 0),定量下限(信噪比为10)均为10 ng/m L,精密度、稳定性、重复性试验的RSD均不超过7.5%(n=5),平均加样回收率在97.4%~98.5%之间(RSD均不大于5.3%,n=5),提取回收率均在88.7%~100.3%之间(RSD均不大于6.14%,n=5)。MELC与HPLC的方法学考察结果均符合药典规定,血药浓度测定结果相近,但与HPLC法比较,MELC法可缩短检测时间(10min vs.40 min),减少有机溶剂使用量(0.38 m L vs.28 m L)。结论:本研究建立的MELC法快速简便、绿色环保,可用于大鼠血浆中大花罗布麻叶4种黄酮类成分的同时测定。展开更多
基金Supported by National Science and Technology Research Item in "9th Five Year Plan"(2004BA502B10)Jiangsu Provincial Hi-tech Industriali-zation Development Project(BG2006318)~~
文摘[Objective] Study on the genetic diversity in wild populations of Poacynum hendersonii.[Method] Random amplified polymorphic DNA(RAPD)technique was employed to analyze the genetic diversity in five wild populations of P.hendersonii sampled from Xinjiang,Gansu and Qinghai provinces.[Result] Totally 165 clear and repeatable bands were generated in RAPD reaction by using 20 primers screened from 80 primers,of which 110 were polymorphic,accounting for 66.67%.At species level,Nei's gene diversity index(H),Shannon's information index(I)and genetic differentiation coefficient(Gst)were 0.220 5,0.304 7 and 0.908 2,respectively.P.hendersonii germplasm resources share a high level of genetic diversity,and genetic differentiation mainly exists among the populations.Results from genetic distances and cluster analysis showed that relationships among P.hendersonii populations were to some extent related with their geographical and climatic characters.[Conclusion] This study suggests that the conservation of P.hendersonii should focus on the protection of many populations,particularly the Qinghai population.
文摘目的:建立同时测定大鼠血浆中槲皮素-3-O-槐糖苷、罗布麻甲素、金丝桃苷、芸香苷4种黄酮类成分含量的方法。方法:取8只SD大鼠,ig大花罗布麻叶提取物混悬液,0.1 g/kg(以提取物计)。给药后1 h于眼眶采血1 m L,离心后采用微乳液相色谱法(MELC)测定4种黄酮类成分含量。色谱柱为Zorbax SB-C18,流动相为微乳体系[月桂醇聚氧乙烯醚-正丁醇-乙酸乙酯-三乙胺-水(体积比为2.5∶3.0∶1.7∶0.3∶92.5,p H=5.0)],流速为0.8 m L/min,柱温为30℃,检测波长为360 nm,进样量为10μL,内标为岩白菜素。同时与使用常规有机溶剂为流动相的高效液相色谱法(HPLC,流动相为0.2%磷酸水溶液-乙腈,梯度洗脱,其余条件同MELC法)进行相关比较。结果:大鼠血浆中槲皮素-3-O-槐糖苷、罗布麻甲素、金丝桃苷、芸香苷检测质量浓度线性范围为10~1 000 ng/m L(r≥0.998 0),定量下限(信噪比为10)均为10 ng/m L,精密度、稳定性、重复性试验的RSD均不超过7.5%(n=5),平均加样回收率在97.4%~98.5%之间(RSD均不大于5.3%,n=5),提取回收率均在88.7%~100.3%之间(RSD均不大于6.14%,n=5)。MELC与HPLC的方法学考察结果均符合药典规定,血药浓度测定结果相近,但与HPLC法比较,MELC法可缩短检测时间(10min vs.40 min),减少有机溶剂使用量(0.38 m L vs.28 m L)。结论:本研究建立的MELC法快速简便、绿色环保,可用于大鼠血浆中大花罗布麻叶4种黄酮类成分的同时测定。
