近廿年来,育种者热衷于通过增加能量物质提高蛋白质含量和质量来改善谷类物的营养价值.由于赖氨酸是单胃动物及人类的首要限制性氨基酸,故目前的研究已着重于提高谷类作物籽粒中的赖氨酸含量.在改良蛋白质质量的育种计划中,一些高赖氨酸基因已被导入大麦品种,而该品种良好的农艺性状仍然得以保持.许多研究证明,高赖氨酸大麦具有较大的蛋白质生物价值.目前,影响开发利用此有利性状的一些主要因子是高赖氨酸基因与粒重小、产量低这些性状相联系. Breeders have been keen on improving the nutritional value of cereals by increasing their energy content and increasing their protein content in the past 20 years. Since lysine is the primary limiting amino acid in monogastric animals and humans, the current research has focused on improving cereals Lysine content in crop kernels In breeding programs that improve protein quality, some of the high-lysine genes have been introduced into barley varieties and good agronomic traits of the variety are still maintained.Many studies have shown that high-lysine barley Has a great biological value of the protein.At present, the main factors that affect the development and utilization of this favorable trait are high lysine genes associated with small grain weight and low yield of these traits.