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果仁的基因型特征 (

Paul K K Adu-Gyamfi¹, Abraham Akpertey¹, Michael Barnnor¹

¹Cocoa Research Institute of Ghana Accra Ghana.

Plant-environment interactions (Hoboken, N.J.)

|June 7, 2023

概括

为了更高的产量,子的育种表明遗传因素控制着树的大小和坚果的质量. 贝宁南瓜品种表现出优越的作物效率,表明提高生产率的潜力.

科学领域:

植物育种植物育种
遗传学遗传学是一个
园艺园艺园艺园艺

背景情况:

高种植效率 (CE) 对于最大限度地提高可管理大小树木的果仁产量至关重要.
了解CE和坚果重量 (NW) 的遗传基础对于提高果生产率至关重要.

研究的目的:

评估来自巴西,贝宁和加纳的果仁克隆的CE和NW的一般和特定组合能力 (GCA和SCA).
为了评估果仁树大小和坚果质量特征的遗传控制.

主要方法:

使用北卡罗来纳州II交配设计,将四个雄性克隆与三个雌性克隆交叉.
在现场评估F1后代的特征,包括树干横截面积 (TCSAv,TCSAr),树冠蔓延 (CSew,CSns),坚果产量 (NY),NW和CE.
用随机的完整块设计分析数据,并计算了GCA,SCA和遗传概率的估计值.

主要成果:

收割效率在30.8-67.4 g/cm2/年之间;NW和NY分别在5.9-10.5 g/年和477.8-939.4 kg/ha/年之间.
贝宁的后代比巴西的后代显示出更高的CE.
GCA 效应比 SCA 效应更为显著,表明附加基因作用.
对CE的狭义遗传率为0.47,对NW的狭义遗传率为0.80.
北南树冠分布 (CSns) 与CE有很强的相关性 (rg = 0.98).

结论:

果仁树的大小和坚果质量受到遗传因素的重大影响.
精选的果仁克隆,特别是贝宁品种,为提高果仁生产率提供了宝贵的遗传资源.
对特定克隆 (BE203,A2,SG273,SG287) 的关键特征确定了积极的GCA效应,指导了未来的育种策略.

关键词:

没有阿纳卡迪.结合能力的能力结合能力.遗传性遗传性遗传性干的横截面面积是什么?

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