Evaluating genetic diversity and seed composition stability within Pan-African Soybean Variety Trials

IF 2 3区 农林科学 Q2 AGRONOMY Crop Science Pub Date : 2024-09-29 DOI:10.1002/csc2.21356
Elizabeth De Meyer, Elizabeth Prenger, Anser Mahmood, Michelle da Fonseca Santos, Godfree Chigeza, Qijian Song, Learnmore Mwadzingeni, Ronica Mukaro, Mwila Chibanda, Gorden Mabuyaye, Brian Diers, Andrew Scaboo
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Abstract

Given high animal protein costs, protein deficiency is a prevalent form of malnutrition in sub-Saharan Africa (SSA). Soybean [Glycine max (L.) Merr.] can provide a cheaper high-quality protein source and fortify lysine-limited cereal-based diets. Breeding soybean for seed composition in SSA requires understanding genotype by environment interactions (G × E). African breeding programs submit cultivars for evaluation in the Pan-African Soybean Variety Trials (PATs), providing the opportunity to examine G × E across diverse environments. With PAT data, we conducted additive main effects and multiplicative interaction (AMMI) and genotype plus genotype-by-environment (GGE) biplot analyses on seed protein and oil content of 17 cultivars grown with two replications in nine environments across Zimbabwe. Across environments, protein ranged from 322.8 to 445.1 g kg−1 and oil ranged from 164.8 to 242.7 g kg−1. For protein AMMI analysis, MAKWACHA performed best for both stability and a combination of stability plus content. For oil AMMI analysis, SC SPIKE performed best for stability and KALEYA performed best for a combination of stability plus content. GGE biplot analyses identified three different mega-environments for protein and oil, with SC EXPT2, KALEYA, and SC EXPT1 having highest protein content and TGX 2002-9FM, LUKANGA, and SC EXPT3 having highest oil content. We also evaluated genetic diversity of 19 PAT cultivars through phylogenetic analyses with 1059 USDA Germplasm Resources Information Network (GRIN) diversity panel accessions. We recommend stable and adaptable PAT cultivars to breeders and producers while highlighting genetically distinct accessions with valuable traits as a resource for breeding programs.
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评估泛非大豆品种试验中的遗传多样性和种子成分稳定性
由于动物蛋白成本高昂,蛋白质缺乏症是撒哈拉以南非洲(SSA)普遍存在的一种营养不良形式。大豆[Glycine max (L.) Merr.]可以提供更廉价的优质蛋白质来源,并强化赖氨酸有限的谷物膳食。在非洲撒哈拉以南地区培育大豆种子成分需要了解基因型与环境的相互作用(G × E)。非洲育种计划在泛非大豆品种试验(PATs)中提交栽培品种进行评估,从而为研究不同环境下的 G × E 提供了机会。利用泛非大豆品种试验的数据,我们对津巴布韦九个环境中生长的两个重复的 17 个栽培品种的种子蛋白质和含油量进行了加性主效应和乘性交互作用(AMMI)以及基因型加环境基因型(GGE)双图分析。在不同环境中,蛋白质含量范围为 322.8 至 445.1 g kg-1,油分含量范围为 164.8 至 242.7 g kg-1。在蛋白质 AMMI 分析中,MAKWACHA 在稳定性和稳定性加含量方面表现最佳。在油分 AMMI 分析中,SC SPIKE 在稳定性方面表现最佳,KALEYA 在稳定性和含量方面表现最佳。GGE 双图分析确定了蛋白质和油分的三种不同巨型环境,其中 SC EXPT2、KALEYA 和 SC EXPT1 蛋白质含量最高,TGX 2002-9FM、LUKANGA 和 SC EXPT3 油分含量最高。我们还通过与 1059 个美国农业部种质资源信息网(GRIN)多样性面板入选品种进行系统发育分析,评估了 19 个 PAT 栽培品种的遗传多样性。我们向育种者和生产者推荐了稳定且适应性强的 PAT 栽培品种,同时强调了具有宝贵性状的不同基因登录品系,作为育种计划的资源。
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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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