Identification of drought and heat tolerant tepary beans in a multi-environment trial study

IF 2 3区 农林科学 Q2 AGRONOMY Crop Science Pub Date : 2024-09-29 DOI:10.1002/csc2.21354
Santos Barrera, Jorge C. Berny Mier y Teran, Johan Aparicio, Jairo Diaz, Rommel Leon, Steve Beebe, Carlos A. Urrea, Paul Gepts
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Abstract

Abiotic constraints, such as drought and heat driven by climate change, negatively impact the production of the common bean (Phaseolus vulgaris L.), an essential grain legume worldwide. The ability to tolerate drought and heat stress in common bean can be improved by introducing genetic variation from related species, such as tepary bean (Phaseolus acutifolius A. Gray), which has recently gained attention because of its adaptation to drought and heat stresses and potential use as a genetic resource and alternative crop. To better understand the phenotypic response of tepary bean to drought and heat stress in multiple environments and trials and to select highly adapted tepary beans, we conducted two field experiments. In Experiment 1, we compared the adaptation to drought stress of tepary bean (n = 10), common bean (n = 10), and Lima bean (Phaseolus lunatus L.; n = 9) by assessing the reduction in grain yield under terminal drought compared to well-irrigated conditions in two California locations with arid summer conditions. Of the three species, tepary bean showed the statistically strongest adaptation to terminal drought, followed by Lima bean and common bean. In Experiment 2, we evaluated a set of 22 tepary beans from contrasting origins for drought and heat stresses across multi-environment trials (METs) in California, Nebraska, and Colombia, with common bean as a control. We found a considerable variation in the tepary bean phenotypic response to these MET conditions, as a result of a strong genotype × environment interaction. Also, we identified tepary bean accessions adapted to drought, heat, and well-irrigated conditions across multiple climate zones. Understanding the performance of tepary bean across multiple environments and identifying tepary beans with broad and target-specific adaptation will maximize the potential use of the species.

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在多环境试验研究中鉴定耐旱和耐热的七叶树豆
气候变化导致的干旱和高温等非生物制约因素对蚕豆(Phaseolus vulgaris L.)的生产产生了不利影响,而蚕豆是世界上一种重要的谷物豆类。芸豆对干旱和高温胁迫的适应能力以及作为遗传资源和替代作物的潜力近来备受关注。为了更好地了解七叶树在多种环境和试验中对干旱和热胁迫的表型响应,并筛选出适应性强的七叶树,我们进行了两项田间试验。在实验 1 中,我们比较了三色豆(n = 10)、四季豆(n = 10)和利马豆(Phaseolus lunatus L.; n = 9)对干旱胁迫的适应性,方法是在加利福尼亚夏季干旱的两个地点,评估在终期干旱与良好灌溉条件下谷物产量的减少情况。在这三个物种中,从统计学角度看,七叶树对终期干旱的适应性最强,其次是利马豆和普通豆。在实验 2 中,我们在加利福尼亚州、内布拉斯加州和哥伦比亚的多环境试验(METs)中评估了 22 种不同原产地的四季豆对干旱和高温胁迫的适应性,并以四季豆作为对照。我们发现,由于基因型与环境之间存在强烈的相互作用,七叶树对这些多环境试验条件的表型反应存在很大差异。此外,我们还发现了适应干旱、高温和多气候区灌溉条件的七叶树品种。了解七叶树在多种环境中的表现,并确定具有广泛和特定目标适应性的七叶树,将最大限度地发挥该物种的潜在用途。
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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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