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在阿拉比卡咖啡中遗传对细菌光环炎和细菌叶斑的耐药性
Lucas Mateus Rivero Rodrigues1, Vinícius Teixeira Andrade2, Suzete Aparecida Lanza Destéfano3
1Centro de Café Alcides Carvalho, Instituto Agronômico, CEP 13020-902, Campinas, SP, Brazil.
Plant disease
|August 25, 2023
概括
开发抗疾病的阿拉比卡咖啡非常重要. 这项研究确定了细菌光环炎和细菌叶斑耐药性的单独主导基因,发现这些基因在相同的染色体上联系在一起.
科学领域:
- 植物遗传学 植物遗传学
- 农业科学 农业科学
- 咖啡养殖 咖啡养殖
背景情况:
- 开发具有多种疾病耐药性的咖啡品种是育种计划的关键目标.
- 阿拉比卡咖啡易受细菌光环炎 (BHB) 和细菌叶斑 (BLS) 的影响.
研究的目的:
- 在阿拉伯咖啡中转移和分析赋予抗BHB和BLS的基因.
- 估计负责对这两种细菌疾病抵抗性的基因的数量和功能.
主要方法:
- 对F2代和相互逆交种群进行了基因分析.
- 接种了2109棵植物感染P. coronafaciens的疫苗. *garcae* (BHB) 和 1,996 种植物,其中包括 *P. amygdali* pv. 烟草 (BLS). *烟草 (BLS). *烟草 (BLS). *烟草 (BLS). *烟草 (BLS). *烟草 (BLS). *烟草 (BLS). *烟草 (BLS). *烟草 (BLS).
主要成果:
- 对BHB和BLS的耐药性表现出很高的遗传性 (0.99).
- 分离分析表明,对每个疾病的耐药性都由单一的主导基因控制.
- 发现BHB和BLS的抗性基因在同一染色体上相互关联,平均遗传距离为10.75cm.
结论:
- 在研究的阿拉伯咖啡种群中,单一的主导基因控制了对BHB和BLS的耐药性.
- 已识别的抗药性基因相互关联,在繁殖计划中为多种疾病耐药性提供了同时选择的潜力.
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