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首页> 外文期刊>Journal of the Institute of Brewing >Genetic Impacts of the Hull on Barley Grain Quality
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Genetic Impacts of the Hull on Barley Grain Quality

机译：船体对大麦籽粒品质的遗传影响

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摘要

Barley hull plays an important role in malt and feed quality and processing. In this study we measured the variation in hull content along with other grain quality traits namely, kernel discolouration and degree of pre-harvest sprouting, in a single mapping population. There were significant (p < 0.05) genetic as well as environment effects. In addition, heritability was calculated for hull content to be 29% and 47% for two years' data. From the analysis, major QTL markers were identified in controlling the expression of hull content on chromosomes 2 (2H), and 6 (6H) with significant (P < 0.05) LOD scores of 5.4 and 3.46 respectively. Minor QTLs were identified on 1 (7H), 4 (4H), 5 (1H) and 7 (5H). The region at marker Bmac310 on 4(4H) could be associated with dormancy gene SD4. A number of the QTLs also coincided with regions for either kernel discolouration or preharvest sprouting resistance (dormancy). The results indicate that variation exists for hull content, which is influenced by both growing environment as well as genetically, although the genetic variance explained less than half of the total variance. Further, hull content also impacts on other grain quality attributes including dormancy, sprouting resistance and kernel appearance.
机译：大麦壳在麦芽，饲料质量和加工中起着重要作用。在这项研究中，我们在一个测绘种群中测量了船体含量的变化以及其他谷物品质性状，即籽粒变色和收获前发芽的程度。有显着（p <0.05）的遗传和环境影响。此外，根据两年的数据，船体含量的遗传力分别为29％和47％。通过分析，确定了主要的QTL标记来控制2号染色体（2H）和6号染色体（6H）的船体含量表达，LOD显着性（P <0.05）得分分别为5.4和3.46。在1（7H），4（4H），5（1H）和7（5H）上鉴定了次要QTL。 4（4H）标记Bmac310上的区域可能与休眠基因SD4有关。许多QTL也与籽粒变色或收获前发芽抗性（休眠）区域相吻合。结果表明，船体含量存在变异，受生长环境和遗传因素的影响，尽管遗传变异解释了不到总变异的一半。此外，壳含量还影响其他谷物品质属性，包括休眠，抗发芽性和籽粒外观。

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