【目的】应用rbcL叶绿体序列解析金线兰及其近缘种亲缘关系。【方法】以血叶兰属及开唇兰属rbcL叶绿体序列设计引物,扩增福建主栽金线兰及其近缘种的DNA序列,并进行系统进化树及序列分析。【结果】从7种金线兰及其近缘种中获得1221 bp r...【目的】应用rbcL叶绿体序列解析金线兰及其近缘种亲缘关系。【方法】以血叶兰属及开唇兰属rbcL叶绿体序列设计引物,扩增福建主栽金线兰及其近缘种的DNA序列,并进行系统进化树及序列分析。【结果】从7种金线兰及其近缘种中获得1221 bp rbcL序列,编码406个氨基酸。对来自19种23条金线兰及近缘种rbcL序列的进化树及序列分析结果表明,金线兰与峨眉金线兰、长裂片金线兰及浙江开唇兰有较近的遗传距离,其次为台湾银线兰,血叶兰与开唇兰属存在较大的遗传距离。23条序列共存在24个多态性位点,及109个变异位点,定义14个单倍型;其中,金线兰与峨眉金线兰、长裂片金线兰及浙江开唇兰共享单倍型,而丽蕾金线兰、滇南开唇兰、滇越金线兰、白线金线兰、钟山金线兰共享单倍型。【结论】rbcL序列可用于金线兰与近缘种的鉴别。展开更多
An improved ohmic confinement has been achieved on HT-6M tokamak after application of edge ohmic heating pulse which makes plasma current rapidly ramp up(0.4 ms)in a ramp rate of 12 MA/s.The improved ohmic confinement...An improved ohmic confinement has been achieved on HT-6M tokamak after application of edge ohmic heating pulse which makes plasma current rapidly ramp up(0.4 ms)in a ramp rate of 12 MA/s.The improved ohmic confinement phase is characterized by(a)energy and particle confinement time increase,(b)non-symmetric increased density ne,(c)reduced Hαradiation,(d)increased Te and steeper Te,ne profile at the edge.The results from soft x-ray sawteeth inversion radius andβ_(p)+l_(i)/2 implied the anomalous current penetration.展开更多
Longquan Museum in Zhejiang province has capitalized on its unique cultural asset of Longquan Celadon to promote inter-museum collaboration.It has so far established partnership with the Palace Museum in Beijing,the S...Longquan Museum in Zhejiang province has capitalized on its unique cultural asset of Longquan Celadon to promote inter-museum collaboration.It has so far established partnership with the Palace Museum in Beijing,the Song Porcelain Museum in Sichuan,the Maritime Silk Road Museum in Guangdong,Zhejiang Provincial Museum,Fudan University,China National Silk Museum,and Beijing Art Museum.展开更多
文摘【目的】应用rbcL叶绿体序列解析金线兰及其近缘种亲缘关系。【方法】以血叶兰属及开唇兰属rbcL叶绿体序列设计引物,扩增福建主栽金线兰及其近缘种的DNA序列,并进行系统进化树及序列分析。【结果】从7种金线兰及其近缘种中获得1221 bp rbcL序列,编码406个氨基酸。对来自19种23条金线兰及近缘种rbcL序列的进化树及序列分析结果表明,金线兰与峨眉金线兰、长裂片金线兰及浙江开唇兰有较近的遗传距离,其次为台湾银线兰,血叶兰与开唇兰属存在较大的遗传距离。23条序列共存在24个多态性位点,及109个变异位点,定义14个单倍型;其中,金线兰与峨眉金线兰、长裂片金线兰及浙江开唇兰共享单倍型,而丽蕾金线兰、滇南开唇兰、滇越金线兰、白线金线兰、钟山金线兰共享单倍型。【结论】rbcL序列可用于金线兰与近缘种的鉴别。
文摘An improved ohmic confinement has been achieved on HT-6M tokamak after application of edge ohmic heating pulse which makes plasma current rapidly ramp up(0.4 ms)in a ramp rate of 12 MA/s.The improved ohmic confinement phase is characterized by(a)energy and particle confinement time increase,(b)non-symmetric increased density ne,(c)reduced Hαradiation,(d)increased Te and steeper Te,ne profile at the edge.The results from soft x-ray sawteeth inversion radius andβ_(p)+l_(i)/2 implied the anomalous current penetration.
文摘Longquan Museum in Zhejiang province has capitalized on its unique cultural asset of Longquan Celadon to promote inter-museum collaboration.It has so far established partnership with the Palace Museum in Beijing,the Song Porcelain Museum in Sichuan,the Maritime Silk Road Museum in Guangdong,Zhejiang Provincial Museum,Fudan University,China National Silk Museum,and Beijing Art Museum.
