Tepary bean (Phaseolus acutifolius A. Gray) is a relatively higher drought‐tolerant crop than common bean (P. vulgaris), serving as genetic resource for food and genetic enhancement of related legumes. Tepary bean production is hampered by cultivation of low yielding and abiotic stress‐susceptible cultivars. Targeted selection of agronomic, physiological and biochemical traits that maximizes yield gains using Phaseolus gene pool is useful to develop stress‐tolerant and high‐performing genotypes. The objective of this review is to provide breeding progress made regarding tepary bean improvement for drought adaptation. Agronomic, physiological and biochemical traits utilized for selection of drought‐tolerant genotypes are highlighted. Genetic and genomic resources developed for tepary bean or closely related species such as common bean useful for genetic analysis and breeding are discussed. Opportunities and challenges to facilitate breeding of tepary bean genotypes with improved abiotic stress adaptation are highlighted. This will enable development of drought‐tolerant tepary bean genotypes targeting selection of agronomic, physiological and biochemical traits. Use of genetically related and complementary Phaseolus species and marker‐assisted selection method is key to developing drought‐tolerant genotypes.

中文翻译：

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繁殖三生豆（Phaseolus acutifolius）以适应干旱：综述

三元豆（Phaseolus acutifolius A. Gray）是一种比普通豆（P. vulgaris）相对较高的耐旱作物，是提供食物和相关豆类遗传改良的遗传资源。低产和非生物胁迫敏感品种的种植阻碍了三生豆的生产。使用菜豆进行针对性的农艺，生理和生化性状选择，最大限度地提高产量基因库可用于开发耐压力和高性能的基因型。这篇综述的目的是提供有关改良三生豆以适应干旱的育种进展。着重介绍了用于选择耐旱基因型的农艺，生理和生化特性。讨论了为三生豆或密切相关的物种（如普通豆）开发的遗传和基因资源，可用于遗传分析和育种。重点介绍了通过改善非生物胁迫适应性来促进三生豆基因型育种的机遇和挑战。这将有助于开发针对农艺，生理和生化性状选择的耐旱三生豆基因型。使用遗传相关和互补的菜豆 种和标记辅助选择方法是发展耐旱基因型的关键。