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首页> 外文OA文献 >Characterization and genetic variability of barley accessions (Hordeum vulgare L.) irrigated in the savannas based on malting quality traits.
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Characterization and genetic variability of barley accessions (Hordeum vulgare L.) irrigated in the savannas based on malting quality traits.

机译：基于麦芽品质特征的稀树草原灌溉的大麦种质（Hordeum vulgare L.）的表征和遗传变异。

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Abstract: The purpose of the study was to characterize and quantify the genetic variability of 30 elite barley malt accessions irrigated in the savannas, using traits related to the industrial quality to verify if they could be used in improvement programmes in the selection of better malt quality genotypes. The following analytical determinations were carried out: total protein content (%), extract yield M.F. i.a. (%), Hartong index VZ (45°C), viscosity 8.6°P (mPa s), boiled wort colour (EBC), soluble nitrogen content (mg/100 g), Kolbach index (%), friability (%) and β-glucan. The descriptive analysis of data was performed and the coefficients of genetic dissimilarity were estimated for each pair. The relative contribution of each trait of genetic diversity was measured and also the correlations among them. According to the genetic dissimilarity matrix, a cluster analysis and scatter chart were constructed. Through cluster analysis, two major similarity groups were observed. The soluble nitrogen was the variable that contributed the most for the genetic variability (86.6%), followed by β-glucan (12.5%). The results indicate that the barley grown in the savanna is ready to be included in the national malt process and that there is a genetic variability among the barley genotypes evaluated for the malting quality traits. It can be concluded that the barley can be used in the Brazilian irrigated barley improvement programme. The qualitative traits that contribute the most to the genetic diversity are soluble nitrogen and β-glucan and the less variable ones are protein content and malt viscosity.
机译：摘要：该研究的目的是表征和量化在稀树草原上灌溉的30种优质大麦麦芽品种的遗传变异性，利用与工业品质有关的特性来验证它们是否可以用于选择质量更好的麦芽的改良计划中基因型。进行以下分析测定：总蛋白含量（％），提取物产率M.F。 i.a. （％），Hartong指数VZ（45°C），粘度8.6°P（mPa s），煮麦汁色泽（EBC），可溶性氮含量（mg / 100 g），Kolbach指数（％），脆碎度（％）和β-葡聚糖。对数据进行描述性分析，并估算每对基因的遗传相似性系数。测量了遗传多样性每个特征的相对贡献，以及它们之间的相关性。根据遗传不相似矩阵，建立了聚类分析和散点图。通过聚类分析，观察到两个主要的相似性组。可溶性氮是遗传变异性贡献最大的变量（86.6％），其次是β-葡聚糖（12.5％）。结果表明，在大草原上生长的大麦已准备好被纳入国家麦芽加工过程，并且在评估麦芽品质性状的大麦基因型之间存在遗传变异。可以得出结论，大麦可用于巴西的灌溉大麦改良计划。对遗传多样性影响最大的定性性状是可溶性氮和β-葡聚糖，变异性较小的是蛋白质含量和麦芽粘度。

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