在大豆中跨越不同基因背景的高蛋白Danbaekkong等位基因的侵入
Renan Souza1, M A Rouf Mian2, Justin N Vaughn1,3
1Department of Crop and Soil Sciences, University of Georgia, Athens, GA, United States.
Frontiers in plant science
|January 4, 2024
概括
研究人员将丹培康的高蛋白大豆等位基因引入精英品种,使种子蛋白增加了3.3%. 虽然产量普遍受到负面影响,但可以选择高蛋白,高产量生产线,突出野生大豆作为一种有价值的遗传资源.
科学领域:
- 植物遗传学和育种.
- 农作物科学 农作物科学
- 农业生物技术 农业生物技术
背景情况:
- 豆是牲畜料中至关重要的蛋白质来源.
- 提高大豆粉蛋白质含量对于开发增强品种至关重要.
- 20号染色体上一个高蛋白质基因组区域之前在丹培康品种中被确定.
研究的目的:
- 为了使丹贝康高蛋白质等位基侵入多种精英大豆品种.
- 开发和部署用于跟踪高蛋白质等位基因的DNA标记物.
- 评估高蛋白质等位基对种子蛋白质含量和产量的影响.
主要方法:
- 使用"本宁HP"作为捐赠父母的多父母种群 (1,115个重组杂交系) 的发展.
- 在基因*Glyma.20g085100*中为321-bp插入一个功能DNA标记物的创建.
- 跨种群和环境的高蛋白位基因的侵入和跟踪.
主要成果:
- 高蛋白质等位基因在所有种群中一致增加了3.3%的种子蛋白质含量.
- 高蛋白质等位基因通常对产量产生负面影响,但高蛋白质的高产品系是可选择的.
- 遗传分析显示,该等位基因起源于*甘氨酸豆* (PI 163453).
结论:
- 野生大豆 (*Glycine soja*) 加入是改善大豆蛋白质组成的宝贵基因来源.
- 已识别的高蛋白位基因可以侵入精英大豆系,为增强蛋白质含量提供策略.
- 尽管有收益权衡,但有针对性的育种可以识别结合高蛋白和可接受收益的品种.
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