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首页> 外文期刊>Cereal Chemistry >Relationship between malting quality traits and hordeins as affected by timing of nitrogen fertilizer application.
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Relationship between malting quality traits and hordeins as affected by timing of nitrogen fertilizer application.

机译：氮肥施肥时间对麦芽品质性状和大麦醇溶蛋白之间的关系。

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摘要

Application of N fertilizer to malting barley is necessary to obtain good yield, but it also influences kernel protein content, which affects malting quality. The negative correlation between kernel protein content and malting extract is due to hordein proteins. Effect of N application timing on hordein fractions and how this influences malt quality was determined. RP-HPLC was used to determine the hordein fractions in 2- and 6-row barley parents and their doubled-haploid progeny, for 2 seasons in 1 location, and 2 locations in the 2nd season. There were no changes in hordein level in response to timing of N application over yr and locations. The 2-row parent had the lowest hordein level and the 6-row progeny had the highest. Total hordein content of the 2-row progeny and 6-row parent were similar. Supply of additional N in the form of fertilizer rather than timing of all N applications influenced the production of all hordein fractions. There were significant correlations between hordein fractions and malting quality that also were reported in other studies. Kernel plumpness showed significant negative correlations with D, C and B hordeins and total hordein content when half of the fertilizer was applied at planting and the other half at the 6-leaf stage. Absorption showed significant positive correlation with C hordeins and a negative correlation with the B-to-C ratio, also when the 2nd half of the N was given at the 6-leaf stage.
机译：氮肥在制麦大麦中的应用是获得良好产量的必要条件，但它也会影响籽粒蛋白质含量，从而影响制麦质量。籽粒蛋白质含量和麦芽提取物之间的负相关性是由于大麦醇溶蛋白。确定了氮肥施用时间对大麦醇溶蛋白组分的影响以及这如何影响麦芽质量。 RP-HPLC用于确定2行和6行大麦亲本及其双倍单倍体后代中的大麦醇溶蛋白含量，分别在1个位置进行2个季节，在第二个季节使用2个位置。大麦醇溶蛋白水平没有因年度和地理位置上施氮的时间而变化。 2行亲本的大麦醇溶蛋白水平最低，而6行后代的大麦醇溶蛋白水平最高。 2行后代和6行亲本的大麦醇溶蛋白含量相似。以化肥的形式供应额外的氮，而不是所有氮肥施用的时间安排，都会影响所有大麦醇溶蛋白组分的生产。大麦醇溶蛋白含量和麦芽质量之间存在显着的相关性，其他研究也对此进行了报道。当一半的肥料在播​​种时施用而另一半在六叶期施用时，籽粒饱满度与D，C和B大麦醇溶蛋白和总大麦醇溶蛋白含量呈显着负相关。吸收显示与大麦醇溶蛋白显着正相关，与B-C比呈负相关，同样在6叶阶段给予N的后半部分时也是如此。

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