一项用于检测冬季小麦FHB耐药性的遗传背景变异的对应研究
Bipin Neupane1,2, Bradley Bisek3, Francois Marais3
1Department of Plant Sciences, North Dakota State University, Fargo, ND, 58108, USA. bipin.neupane@wsu.edu.
Scientific reports
|February 26, 2024
概括
这项研究确定了硬红冬季小麦品种,具有强大的Fusarium头部炎症抵抗力. 这些线结合了主要和背景抗性基因,以改善作物保护.
科学领域:
- 植物育种 植物育种
- 遗传学 遗传学 是一个
- 农业科学 农业科学
背景情况:
- 在小麦育种中,Fusarium头炎 (FHB) 耐药性依赖于主要效应量化特征位点 (QTL).
- 影响较小的背景QTL也会导致FHB耐药性,但人们对其了解较少.
- 总阻力是主要和背景QTL效应的组合.
研究的目的:
- 识别适应良好的强烈红色冬季 (HRW) 小麦育种线,具有有益的背景抵抗QTL用于Fusarium头部炎 (FHB).
主要方法:
- 一个涉及11个父母和55个F1杂交的diallel试验进行了评估II型FHB在温室条件下的耐药性.
- 分析包括疾病严重程度 (DS),一般结合能力 (GCA) 和特定结合能力 (SCA).
- 六个最好的F1杂交品种的F2代被评估为超越性分离.
主要成果:
- 在测试的小麦品种中观察到DS,GCA和SCA的显著差异.
- 四个父母成为优越的综合组合者,表现出最低的疾病严重程度.
- 添加性QTL效应占主导地位,耐药性QTL显示不完全的主导地位和积极效应基因的较大贡献.
结论:
- 添加基因效应在硬红色冬季小麦中对Fusarium头部炎症的耐药性起着至关重要的作用.
- 识别和利用具有良好的背景抗性QTL的生产线对于开发改进的FHB抗性小麦品种至关重要.
- 对跨越性隔离者的进一步评估有望为开发新型耐药品种提供希望.
更多相关视频
08:36Development of Targeting Induced Local Lesions IN Genomes TILLING Populations in Small Grain Crops by Ethyl Methanesulfonate Mutagenesis
Published on: July 16, 2019
11.6K
10:26Author Spotlight: Integrating Biochemical Functions of β-Glucanases and Peroxidase Enzymes in Wheat-RWA Interaction
Published on: July 26, 2024
676
相关概念视频
Dihybrid Crosses
74.8K
Overview
74.8K
Trihybrid Crosses
23.3K
Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...
23.3K
