模拟探索参数空间和资源分配,战略性地创建新驯化育种计划

IF 2 3区 农林科学 Q2 AGRONOMY Crop Science Pub Date : 2024-10-03 DOI:10.1002/csc2.21359
Nathan Fumia, Rosana Zenil-Ferguson, Marnin Wolfe, Michael Kantar
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引用次数: 0

摘要

现代驯化工作已在多种物种中展开。这些努力导致了与最初野生种群不同程度的变化和市场成功。在本研究中,我们探讨了不同的育种周期参数,以了解新驯化育种计划不同潜在起点的变化率。设计一项能将新作物推向市场的计划需要考虑成本效益和资源分配。市场上更多的作物多样性为设计不同类型的粮食系统创造了机会,这些粮食系统可以针对地区和当地的粮食安全问题量身定制。通过育种周期--杂交、评估和选择,对不同参数组合的增益率和方差进行随机模拟,以确定从野生到半家养植物物种的种群水平变化。模拟育种方案的表型增益和方差因选择策略和种群类型的不同而不同,发现对陆生种群和孤本种群采用表型循环选择时,寡基因性状的表型增益最大,而对野生种群则选择基因组选择。选择策略也存在差异,最大回避始终导致较低的增益,但附加方差较高。总之,在寻求驯化一个新物种时,我们的模拟发现表型循环选择是最具成本效益的选择,并能在选择的早期几代获得最大收益,而一旦初期收益趋于平稳,标记技术就会发挥最大作用。
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Simulated exploration of parameter space and resource allocation for strategic creation of neo-domestication breeding programs
Modern domestication efforts have occurred in a wide range of species. These efforts have led to different levels of change from the initial wild populations and market success. In this study, we explore different breeding cycle parameters to understand the rate of change in different potential starting points of neo-domestication breeding programs. The design of a program that will bring a new crop to market requires consideration of cost efficiency and resource allocation. More crop diversity on the market creates an opportunity to design different types of food systems that can be tailored toward regional and local food security. Stochastic simulation of the rate of gain and variance is applied to different parameter combinations through the breeding cycle—crossing, evaluation, and selection—to identify population level changes along the continuum of wild to semi-domestic plant species. The simulated breeding schemes differ in phenotypic gain and variance depending on selection strategy and population type, discovering the largest phenotypic gain of oligogenic traits occurring using phenotypic recurrent selection for landrace and orphan populations while choosing genomic selection for wild populations. There were also differences based on selection strategy, with maximum avoidance consistently leading to lower gains but higher additive variance. Overall, when looking to domesticate a new species, our simulations find phenotypic recurrent selection to be the most cost-effective option and lead to the most gain in early generations of selection, with marker technology being most useful once initial gains have plateaued.
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来源期刊
Crop Science
Crop Science 农林科学-农艺学
CiteScore
4.50
自引率
8.70%
发文量
197
审稿时长
3 months
期刊介绍: Articles in Crop Science are of interest to researchers, policy makers, educators, and practitioners. The scope of articles in Crop Science includes crop breeding and genetics; crop physiology and metabolism; crop ecology, production, and management; seed physiology, production, and technology; turfgrass science; forage and grazing land ecology and management; genomics, molecular genetics, and biotechnology; germplasm collections and their use; and biomedical, health beneficial, and nutritionally enhanced plants. Crop Science publishes thematic collections of articles across its scope and includes topical Review and Interpretation, and Perspectives articles.
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