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首页> 外文期刊>Acta Horticulturae >Breeding and cultivar improvement of snap bean (Phaseolus vulgaris) for productivity and resilience under drought stress
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Breeding and cultivar improvement of snap bean (Phaseolus vulgaris) for productivity and resilience under drought stress

机译：干旱胁迫下生产率和韧性的育种和品种改善

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摘要

Effective breeding and genetic improvement of beans {Phaseolus spp.) aim to harness their tremendous genetic diversity to match location-specific growing conditions and the needs of households and local markets in response to climate change. Development of improved cultivars involves evaluation of genetic resources (e.g. genotyping, phenotyping) for identification of sources of desired traits, gene discovery, and knowledge-based breeding for genetic enhancement. This paper presents the screening process as part of the developing regionally adapted snap bean cultivars for growing under water deficiency conditions. Different screening approaches have been applied, including: plant growth and yield parameters (biomass, plant height, pod and grain yield, seed germination, flower abortion); and physiological responses (chlorophyll fluorescence induction parameters). Results from field trails with Bulgarian snap bean cultivars were presented and discussion on physiological mechanisms used by plants to cope with this abiotic stress factor, as well as approaches for screening and their relation with yield in the tolerant genotypes are encompassed in the context of plant breeding methods. Two bean cultivars Tangra' and 'Zaria' with different water efficiency, post-drought recovering capacity and heat tolerance were identified and their incorporation into the regional industry may expand the range of conditions suitable for bean production while reducing growers' costs and risks.
机译：豆类{phopsolus spp的有效育种和遗传改进。旨在利用巨大的遗传多样性，以满足特定地点的日益增长的条件以及户籍和当地市场的需求，以应对气候变化。改进品种的发展涉及评估遗传资源（例如基因分型，表型），用于鉴定所需特征，基因发现和基于知识的遗传增强的知识育种来源。本文介绍了作为开发区域适应的豆荚豆品种的筛选过程，用于在水不足条件下生长。应用了不同的筛选方法，包括：植物生长和产量参数（生物量，植物高度，豆荚和籽粒产量，种子萌发，花堕胎）;和生理反应（叶绿素荧光诱导参数）。提出了与保加利亚卡豆豆品种的场径的结果，并讨论植物使用这种非生物应激因子的生理机制，以及筛选方法的筛选方法及其在植物育种的背景下包括耐受性基因型的关系方法。鉴定了两种豆品种Tangra'和“Zaria”，遭到不同的水效，恢复能力和耐热性，并将其纳入区域行业可能扩大适合豆类生产的条件范围，同时降低种植者的成本和风险。

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