通过在草中进行预测性育种,加速对垂的定量耐药性的遗传收益
Mitchell J Feldmann1, Dominique D A Pincot1, Mishi V Vachev1
1Department of Plant Sciences, University of California Davis, Davis, California, USA.
The plant genome
|November 14, 2023
概括
开发能够抵抗Verticillium wilt (VW) 的草品种至关重要. 基因组选择在预测耐药性方面表现有前途,为可持续的草生产提供了有效的育种策略.
科学领域:
- 植物病理学 植物病理学
- 遗传学 是一个遗传学.
- 农业科学 农业科学
背景情况:
- (VW) 是一种主要疾病,影响全球草 (Fragaria *ananassa *) 产量.
- 现有的草生殖质对Verticillium dahliae具有有限的抵抗力,阻碍了繁殖的进展.
- 60年来,对VW耐药性的微不足道的遗传收益凸显了对先进育种方法的需求.
研究的目的:
- 评估基因组选择的可行性,以提高草对Verticillium枯的定量抵抗力.
- 为基因组预测模型开发和表型化一个多样化的培训人群.
- 为了评估基因组预测对Verticillium枯耐药性的准确性.
主要方法:
- 现型化了草杂交的培训群体 (*n* = 1,000) 具有不同的抵抗水平.
- 与现有的精英和异国混杂种群 (*n* = 1,000) 结合的数据.
- 利用基因组预测模型来估计Verticillium枯耐药性的繁殖值.
主要成果:
- 获得了0.47-0.48.8的基因组预测准确度.
- 预测模型解释了70%-75%的耐药性添加基因变异.
- 为有效的基因组选择证明了足够的准确性.
结论:
- 基因组选择是一种可行的工具,可以在草育种计划中增强Verticillium枯耐药性.
- 训练人群的常规更新将保持和提高预测准确性.
- 这种方法通过提高抗病能力来支持可持续的草生产.
相关概念视频
01:59Plant Breeding and Biotechnology
19.0K
Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.
19.0K
02:27Trihybrid Crosses
23.4K
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...
23.4K
01:20Monohybrid Crosses
230.2K
Overview
230.2K
01:18Dihybrid Crosses
75.0K
Overview
75.0K
02:46Chi-square Analysis
38.3K
The chi-square test is a statistical hypothesis test. It is used to check whether there is a significant difference between an expected value and an observed value. In the context of genetics, it enables us to either accept or reject a hypothesis, based on how much the observed values deviate from the expected values.
The chi-square test was developed by Pearson in 1990.
The first step of performing a Chi-square analysis is to establish a null hypothesis, which assumes that there is no real...
The chi-square test was developed by Pearson in 1990.
The first step of performing a Chi-square analysis is to establish a null hypothesis, which assumes that there is no real...
38.3K