Based on 16 years of magnetic field observations from CHAMP and Swarm satellites,this study investigates the influence of the Interplanetary Magnetic Field(IMF)Bx component on the location and peak current density of ...Based on 16 years of magnetic field observations from CHAMP and Swarm satellites,this study investigates the influence of the Interplanetary Magnetic Field(IMF)Bx component on the location and peak current density of the polar electrojets(PEJs).We find that the IMF Bx displays obvious local time,seasonal,and hemispherical effects on the PEJs,as follows:(1)Compared to other local times,its influence is weakest at dawn and dusk.(2)In the midnight sectors of both hemispheres,the IMF Bx tends to amplify the westward PEJ when it is<0 in the Northern Hemisphere and when it is>0 in the Southern Hemisphere;this effect is relatively stronger in the local winter hemisphere.(3)At noontime,the IMF Bx intensifies the eastward current when it is<0 in the Northern Hemisphere;in the Southern Hemisphere when it is>0,it reduces the westward current;this effect is notably more prominent in the local summer hemisphere.(4)Moreover,the noontime eastward current shifts towards higher latitudes,while the midnight westward current migrates towards lower latitudes when IMF Bx is<0 in the Northern Hemisphere and when it is>0 in the Southern Hemisphere.展开更多
比较1B x 14及其它已知HMW-GS基因的启动子和编码区,根据其不同点设计出1B x 14基因特异扩增引物.以8种已知HMW-G S组成的小麦DNA为模板进行PCR扩增,结果表明:具有1Bx14亚基的品种扩增出1条400 bp左右特异条带.结合该特异标记和已报道的...比较1B x 14及其它已知HMW-GS基因的启动子和编码区,根据其不同点设计出1B x 14基因特异扩增引物.以8种已知HMW-G S组成的小麦DNA为模板进行PCR扩增,结果表明:具有1Bx14亚基的品种扩增出1条400 bp左右特异条带.结合该特异标记和已报道的1Dx5特异标记对2个F2杂交群体进行检测,从184个F2单株中筛选出111个同时含有1B x 14和1D x 5基因的单株.该研究结果可为种质鉴定和亚基整合育种提供参考.展开更多
基金the National Key Research and Development Program(2022YFF0503700)National Natural Science Foundation of China(42374200)the National Natural Science Foundation of China Basic Science Center(42188101).
文摘Based on 16 years of magnetic field observations from CHAMP and Swarm satellites,this study investigates the influence of the Interplanetary Magnetic Field(IMF)Bx component on the location and peak current density of the polar electrojets(PEJs).We find that the IMF Bx displays obvious local time,seasonal,and hemispherical effects on the PEJs,as follows:(1)Compared to other local times,its influence is weakest at dawn and dusk.(2)In the midnight sectors of both hemispheres,the IMF Bx tends to amplify the westward PEJ when it is<0 in the Northern Hemisphere and when it is>0 in the Southern Hemisphere;this effect is relatively stronger in the local winter hemisphere.(3)At noontime,the IMF Bx intensifies the eastward current when it is<0 in the Northern Hemisphere;in the Southern Hemisphere when it is>0,it reduces the westward current;this effect is notably more prominent in the local summer hemisphere.(4)Moreover,the noontime eastward current shifts towards higher latitudes,while the midnight westward current migrates towards lower latitudes when IMF Bx is<0 in the Northern Hemisphere and when it is>0 in the Southern Hemisphere.
文摘比较1B x 14及其它已知HMW-GS基因的启动子和编码区,根据其不同点设计出1B x 14基因特异扩增引物.以8种已知HMW-G S组成的小麦DNA为模板进行PCR扩增,结果表明:具有1Bx14亚基的品种扩增出1条400 bp左右特异条带.结合该特异标记和已报道的1Dx5特异标记对2个F2杂交群体进行检测,从184个F2单株中筛选出111个同时含有1B x 14和1D x 5基因的单株.该研究结果可为种质鉴定和亚基整合育种提供参考.
