期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Pedigree analysis of nationally approved soybean cultivars from 1984 to 2013 and implications for breeding
1
作者 Zhonglu Yang Xiaomin Guan +10 位作者 Yanqin He Zhihui Shan Dezhen Qiu Xiaojuan Zhang Limiao Chen Chanjuan Zhang Songli Yuan Shuilian Chen Qingnan Hao Haifeng Chen Xin'an Zhou 《Oil Crop Science》 2016年第4期30-39,共10页
To reveal origins of 316 state authorized varieties from 1984 to 2013, rules of their parentsJ selection including types and hybrid configurations of direct parents, geo-graphical sources and types of their a... To reveal origins of 316 state authorized varieties from 1984 to 2013, rules of their parentsJ selection including types and hybrid configurations of direct parents, geo-graphical sources and types of their ancestors were analyzed. Various important direct parents and ancestors were summarized and nuclear contribution of ancestors was also estimated by pedigree analysis. Among 316 registered cultivars, 298 (94.3%) were bred by hybridization, and most of their direct parents were cultivars or breeding lines (65.5%). Cultivars and breeding lines were mostly used as female parents, with 53.0% and 38.7% respectively. The 316 released cultivars were traced to 373 final ancestors, mainly com-posed of landraces (55.5%) and breeding lines (36.7%). The 373 final ancestors came from different regions, including 121 from northern area, 110 from Huang-Huai-Hai area, 53 from southern area and 76 from abroad. These ancestors were mainly from the same ecologic zone as the approved cultivars. Newly approved cultivars always have more ancestors and a broader genetic base. However, distribution of these ancestors was unbalanced, and a few ancestors provided significant genetic contributions to later generations, such as the most concentrated final ancestors from Huang-Huai-Hai region followed by northern and southern regions. These results offer more information regarding their important parents and provide valuable references to soybean breeding. We should increase soybean germplasm exchanges with different regions and make use of elite lines, foreign cultivars and wild soybean germplasm to broaden the genetic background. 展开更多
关键词 soybean uniform test nationally approved cultivars pedigree analysis direct parent ancestor genetic base
下载PDF
2002-2004年国家大豆区试品种对大豆花叶病毒抗性的评价 被引量:34
2
作者 智海剑 盖钧镒 +5 位作者 陈应志 廖琴 郭东全 王延伟 李凯 李海潮 《大豆科学》 CAS CSCD 北大核心 2005年第3期189-194,共6页
在接种东北大豆产区SMV主要株系N1、N3和黄淮与南方大豆产区SMV株系Sa、SC3条件下,对最新育成的参加2002—2004年国家大豆区试的134个大豆品种进行了抗性评价,结果表明:接种4个株系后,分别有13个品种(东农L13、汾豆56、汾豆60、汾豆61... 在接种东北大豆产区SMV主要株系N1、N3和黄淮与南方大豆产区SMV株系Sa、SC3条件下,对最新育成的参加2002—2004年国家大豆区试的134个大豆品种进行了抗性评价,结果表明:接种4个株系后,分别有13个品种(东农L13、汾豆56、汾豆60、汾豆61、晋大74、K丰52—1、航天2号、辽03—20、辽95025—5—4、中作2—29、中豆32、科9208、油春32)和5个品种(铁95025 —5—5、铁94037—6、汾豆69、冀99、冀鉴27)分别对4个株系和3个株系表现抗侵染,中黄4、中作016、吉林2001—14等25个品种对1—2个株系表现抗侵染;5个品种(公交03-1212、冀鉴37、秦豆9、淮02-02、滑豆20)对4个株系表现抗扩展。以上品种除可用于生产外,还可作为抗SMV 育种的抗源。该批参试品种中,黄淮地区品种的平均病情指数最轻,其次是东北地区品种,然后长江流域,华南地区品种的病情最重。从不同类型品种的病情分析,按黄淮夏大豆、北方春大豆、南方夏大豆、南方春大豆、菜用大豆、热带多熟制大豆的顺序逐步加重。在田间条件下,免疫品种数量不多,占参试品种的7.9%,严重度为1级的高抗品种占47.5%,未发现严重度为4级的高感品种,表明多数品种田间抗性较好。 展开更多
关键词 最新大豆区试品种 大豆花叶病毒 抗性 鉴定
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部