Chen Youxin, a Chinese violinist and violin educator, was bom in 1913 in zhejiang Wu Xing. He is good at playing many works of Beethoven, Mozart,. In the paper, I described the process of promoting Chinese violin Chen...Chen Youxin, a Chinese violinist and violin educator, was bom in 1913 in zhejiang Wu Xing. He is good at playing many works of Beethoven, Mozart,. In the paper, I described the process of promoting Chinese violin Chen Youxin and his violin teaching ideas and teach ing methods, and the other to make a great contribution on the violin.展开更多
通过远缘杂交及回交将白菜的抗病基因导入到芥菜中,创制获得优质的抗根肿病长柄芥(Brassica juncea var.longepetiolata Yang et Chen)育种材料。采用人工接种鉴定和分子标记鉴定相结合法,对10份抗根肿病白菜材料进行抗性分析,筛选出1...通过远缘杂交及回交将白菜的抗病基因导入到芥菜中,创制获得优质的抗根肿病长柄芥(Brassica juncea var.longepetiolata Yang et Chen)育种材料。采用人工接种鉴定和分子标记鉴定相结合法,对10份抗根肿病白菜材料进行抗性分析,筛选出1份可作为长柄芥抗根肿病育种材料创制的抗性资源CCR21002。利用CCR21002分别作为父本、母本提供抗根肿病基因,与长柄芥进行远缘杂交,结合胚挽救技术获得正反杂交种F1,选取植株形态偏向芥菜的F1与长柄芥回交获得BC_(1),对BC_(1)植株进行形态学、细胞学分析及抗病性鉴定。结果表明,回交一代比杂种一代更难获得,胚挽救成活的13株BC_(1)中,仅筛选出1株基因型为AABB且抗根肿病的植株,经分子标记鉴定所含抗病基因为CRb,在植株形态上保留有长柄芥的大部分性状。证明经过与抗根肿病白菜远缘杂交及回交,获得对4号生理小种表现抗性的长柄芥新种质1份,可用于继续回交转育。展开更多
文摘Chen Youxin, a Chinese violinist and violin educator, was bom in 1913 in zhejiang Wu Xing. He is good at playing many works of Beethoven, Mozart,. In the paper, I described the process of promoting Chinese violin Chen Youxin and his violin teaching ideas and teach ing methods, and the other to make a great contribution on the violin.
文摘通过远缘杂交及回交将白菜的抗病基因导入到芥菜中,创制获得优质的抗根肿病长柄芥(Brassica juncea var.longepetiolata Yang et Chen)育种材料。采用人工接种鉴定和分子标记鉴定相结合法,对10份抗根肿病白菜材料进行抗性分析,筛选出1份可作为长柄芥抗根肿病育种材料创制的抗性资源CCR21002。利用CCR21002分别作为父本、母本提供抗根肿病基因,与长柄芥进行远缘杂交,结合胚挽救技术获得正反杂交种F1,选取植株形态偏向芥菜的F1与长柄芥回交获得BC_(1),对BC_(1)植株进行形态学、细胞学分析及抗病性鉴定。结果表明,回交一代比杂种一代更难获得,胚挽救成活的13株BC_(1)中,仅筛选出1株基因型为AABB且抗根肿病的植株,经分子标记鉴定所含抗病基因为CRb,在植株形态上保留有长柄芥的大部分性状。证明经过与抗根肿病白菜远缘杂交及回交,获得对4号生理小种表现抗性的长柄芥新种质1份,可用于继续回交转育。