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Genetic variability of irrigated barley in savanna environments based on malting quality

机译：基于麦芽质量的大草原环境中灌溉大麦的遗传变异

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The Brazilian savanna has the potential to support the national demand for barley providing an opportunity to the agricultural business in the region. The barley breeding program of Embrapa Cerrados pursues the selection of superior genotypes, adapted to the savanna conditions, with industrial quality and high grain yields. This work sought to characterise and quantify the genetic variability of 38 elite genotypes of irrigated barley in the Brazilian savanna from industrial grade traits, verifying the degree of association between quality characters and analysing the genetic distance from the ideotype. Twelve traits of malting quality were evaluated in two environments of the Distrito Federal. A descriptive analysis of the data was performed, the genetic dissimilarity coefficients were estimated between each genotype pair based on the Mean Euclidean Distance, the genotype-ideotype distance index, the Pearson correlation and the relative contribution of each trait to Singh's genetic diversity of evaluated traits. There were dependency relationships between malting traits for the evaluated environments. Such associations facilitate the indirect selection of genotypes, increasing the efficiency of the breeding program. The use of selection indices allows the choice of promising genotypes that can be explored in blocks of crosses to maximise heterotic effects and genetic complementarity in the genetic breeding program of irrigated barley in the Brazilian savanna. (C) 2020 The Authors. Journal of the Institute of Brewing published by John Wiley & Sons Ltd on behalf of The Institute of Brewing & Distilling
机译：巴西大草原有可能支持对大麦的国家需求，为该地区的农业业务提供机会。 Barley Berrados的Barley繁殖计划追求选择优质基因型，适应大草原条件，具有工业质量和高谷物产量。这项工作试图在从工业级特征中表征和量化灌溉大麦的38个精英基因型的遗传变异，验证了质量特征之间的关联程度，并分析了与识别型的遗传距离。在迷人联邦的两个环境中评估了12种麦芽质量的特征。进行了对数据的描述性分析，基于平均欧氏距离，基因型 - 型距离指数，Pearson相关性和每个特征对评估性状的遗传多样性的每个特征的相对贡献，估计遗传异常对。评估环境的播种性状之间存在依赖关系。这种关联有助于间接选择基因型，提高育种计划的效率。选择指数的使用允许选择可以在十字架块中探讨的有前途的基因型，以最大化灌溉大麦的遗传育种计划中的灌注大麦的遗传育种和遗传互补性。 （c）2020作者。 John Wiley＆Sons Ltd在酿造和蒸馏研究所发表的酿造研究所

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