• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Proceedings of the 12th International Rapeseed Congress: Sustainable Development in Cruciferous Oilseed Crops Production >High stability oil Brassica napus from a cross low linoleic acid and low linolenic acid mutants: agronomic improvement through backcrossing to elite canola germplasm and reselection of extreme fatty acid profiles
【24h】

High stability oil Brassica napus from a cross low linoleic acid and low linolenic acid mutants: agronomic improvement through backcrossing to elite canola germplasm and reselection of extreme fatty acid profiles

机译：交叉低亚油酸和低亚麻酸突变体的高稳定性甘蓝型油菜：通过回交至优良低芥酸菜子种质和重新选择极端脂肪酸谱来改善农艺

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

At the 11th International Rapeseed Congress in Copenhagen, Denmark, the creation of high stability oil Brassica napus lines selected from a cross between low linoleic acid (8%) and low linolenic acid (2%) mutants was reported. Fatty acid profiles were achieved with oleic acid levels ranging up to 78% and linolenic acid levels as low as 1.6%. However, the agronomic performance of these lines was weak; the lines were very late maturing, up to 3 weeks later than adapted Canadian B. napus cultivars. Since then selected F4 and F5 lines were crossed to a black-seeded B. napus line, N99-508, an elite selection from the cross of Quantum and LG3260 and pedigreed to the F5 generation. Half-seed selection for high stability oil profile and greenhouse selection for early flowering was performed on the F2, F3, F4 and F5 seeds and plants. At most generations the selected plants were selfed, but in order to improve the efficiency of recovery of the desired traits crosses were also made among certain F3 plants representing different F2 families. Selected F5 and F6 lines were tested in 2004 in a replicated single row, three meter field nursery. Greatly improved agronomic performance was observed including much earlier maturities approaching that of adapted canola cultivars. The fatty acid profile of many lines was observed to be high stability oil type and several lines exhibited a high stability fatty acid composition profile that even more extreme than that previously reported. In 2005 14 lines were retested in a three location, four replicate yield trial.
机译：在丹麦哥本哈根举行的第十一届国际油菜大会上，据报道，从低亚油酸（8％）和低亚麻酸（2％）突变体之间的杂交中选出了高稳定性油甘蓝型油菜。脂肪酸的分布状况是油酸含量高达78％，亚麻酸含量低至1.6％。但是，这些品系的农艺性能较弱。该品系非常晚熟，比适应的加拿大油菜（B. napus）品种晚了三周。从那时起，选定的F4和F5系与黑色种子的甘蓝型油菜系N99-508杂交，这是从Quantum和LG3260的杂交中选出的优良品种，并成为F5代。在F2，F3，F4和F5种子和植物上进行了半种子选择（用于高稳定性油分布图）和温室选择（用于提前开花）。在大多数世代中，选择的植物都是自交的，但是为了提高所需性状的恢复效率，还在代表不同F2家族的某些F3植物之间进行了杂交。选定的F5和F6系于2004年在重复的单行三米田间苗圃中进行了测试。观察到农艺性能大大提高，包括更早的成熟油菜籽品种。观察到许多品系的脂肪酸谱是高稳定性油型，并且数个品系显示出高稳定性的脂肪酸组成谱，甚至比以前报道的还要极端。在2005年，在三个地点进行了14条品系的重新测试，重复进行了四次产量试验。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号