简单配对:R包用于预测和优化使用基因组选择的繁殖交叉
Marco Antônio Peixoto1,2, Rodrigo Rampazo Amadeu3,4, Leonardo Lopes Bhering1
1Laboratório de Biometria, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil.
The plant genome
|November 27, 2024
概括
一个新的R包,SimpleMating,优化繁殖交叉来最大限度地提高遗传收益并保持多样性. 这种计算工具有助于植物育种者设计交叉,以实现长期的遗传改进和强壮的种群.
科学领域:
- 植物育种 植物育种
- 计算生物学是一种计算生物学.
- 定量遗传学 是一个量子遗传学.
背景情况:
- 父母和交叉选择对于成功的育种计划至关重要.
- 设计最大限度地提高遗传收益的交叉,同时保持人口多样性,对于长期的育种应用是必不可少的.
研究的目的:
- 介绍SimpleMating,一个新的,灵活的,开源的R包用于繁殖程序中的计算性伴侣分配.
- 为预测和优化跨多种繁殖系统和设计的繁殖交叉提供一个工具.
主要方法:
- 简单配对估计交叉性能使用标准,如中期父母价值和总遗传价值.
- 一个优化算法最大限度地提高了目标标准,同时最大限度地减少了下一代的近亲繁殖.
- 用户可以指定交叉号码,父限制和最大相关性,以生成灵活的交配计划.
主要成果:
- 简单配对生成基于单个或多个特征标准的配对计划.
- 在模拟玉米育种计划中的测试表明了大量的遗传收益 (高达比传统基因组选择多22%).
- 该工具还显示,与传统方法相比,随着时间的推移,遗传多样性的损失减少了.
结论:
- 简单配对是培育计划中数据驱动决策的一个有价值的工具.
- 该方案有效地提高了植物育种应用中的遗传收益,并保持了植物育种应用中的遗传多样性.
相关概念视频
01:20Monohybrid Crosses
229.2K
Overview
229.2K
01:00Punnett Squares
113.1K
Overview
113.1K
01:18Dihybrid Crosses
74.1K
Overview
74.1K
02:16Genetics of Speciation
19.1K
Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
19.1K
02:27Trihybrid Crosses
23.1K
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...
23.1K
01:06Natural Selection and Mating Preferences
92
The principle of natural selection posits that organisms better adapted to their environment are more likely to survive and reproduce. This principle is closely intertwined with mating preferences, a key aspect of sexual selection, which evolutionary psychologists believe is driven by instincts to propagate one's genes. Such instincts significantly influence mating behaviors and preferences between genders.
Females, due to their biological roles in conception, pregnancy, and nursing,...
Females, due to their biological roles in conception, pregnancy, and nursing,...
92