...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Genome >A native QTL for Fusarium head blight resistance in North American barley (Hordeum vulgare L.) independent of height, maturity, and spike type loci
【24h】

A native QTL for Fusarium head blight resistance in North American barley (Hordeum vulgare L.) independent of height, maturity, and spike type loci

机译：北美大麦（Hordeum vulgare L.）的本地镰刀菌枯萎病抗性QTL，与高度，成熟度和穗型位点无关

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Fusarium head blight (FHB), caused by Fusarium graminearum Schwabe (teleomorph Gibberella zeae (Schwein.) Petch), is one of the major diseases of barley (Hordeum vulgare L.) in eastern China, the Upper Midwest of the USA, and the eastern Prairie Provinces of Canada. To identify quantitative trait loci (QTL) controlling FHB resistance, a recombinant inbred line population (F6:7 ) was developed from the cross Zhenongda 7/PI 643302. The population was phenotyped for resistance to FHB in two experiments in China and four experiments in North Dakota. Accumulation of the mycotoxin deoxynivalenol was determined in one experiment in China and two in North Dakota. Simplified composite interval mapping was performed on the whole genome level using the software MQTL. The QTL FHB-2 from PI 643302 for FHB resistance was found on the distal portion of chromosome 2HL in all six FHB screening environments. This QTL accounted for 14% of phenotypic variation over six environments and was not associated with heading date or plant height. The FHB resistance QTL FHB-2 detected near the end of chromosome 2HL is in a different location from those found previously and is therefore probably unique. Because the QTL was not contributed by the Chinese cultivar Zhenongda 7, it is likely a native QTL present in North American barley. The QTL FHB-2 represents the first reported QTL for native FHB resistance in North American germ plasm and has been given the provisional name Qrgz-2H-14. This QTL should be considered for pyramiding with other FHB QTL previously mapped.
机译：由禾谷镰刀菌（Teseomorph Gibberella zeae（Schwein。）Petch）引起的镰刀菌枯萎病（FHB）是大麦（Hordeum vulgare L.）在中国东部，美国中西部的上等地区和加拿大东部大草原省。为了鉴定控制FHB抗性的数量性状基因座（QTL），从贞农大7 / PI 643302杂交中开发了一个重组自交系种群（F6：7）。在中国的两个实验和在中国的四个实验中对该种群的FHB抗性进行了表型分析。北达科他州。在中国的一项实验和北达科他州的两项实验中确定了霉菌毒素脱氧雪腐烯醇的积累。使用软件MQTL在整个基因组水平上进行了简化的复合区间作图。在所有六个FHB筛查环境中，都在PI 2 643302的QTL FHB-2中发现了对FHB抗性的QTL FHB-2。在六个环境中，此QTL占表型变异的14％，与抽穗期或株高无关。在2HL染色体末端附近检测到的FHB抗性QTL FHB-2与以前发现的位置不同，因此可能是唯一的。由于QTL不是由中国品种珍农大7贡献的，因此很可能是北美大麦中存在的本地QTL。 QTL FHB-2代表了第一个报道的北美种质对天然FHB抗性的QTL，并已被临时命名为Qrgz-2H-14。应该考虑将此QTL与先前映射的其他FHB QTL进行金字塔式连接。

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