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为了稳定产量潜力和减少投入，谷类作物育种者筛选出抗病抗虫的性状，从而通过对抑制杂草发育的生长习性的选择，有可能培育出对杂草蔓延耐性增加的品种。我们的目的是，确定小麦和大麦是否在减少行间透光和抑制野燕麦生长的能力上存在差异。依据我们的试验结果，在春小麦、冬小麦和春大麦的内部存在着行间太阳光透过的显著遗传变异，７个被研究的试验圃中有４个的株高与透光呈显著负相关。株高相近而允许透光量不同的６个大麦系和６个春小麦系被用来测验对野燕麦的抑制作用，大麦与野燕麦的竞争能力强于小麦，前者的燕麦生物量和种子产量是后者的一半，大麦系允许透过的光量比小麦的少４３％。野燕麦的生长性状在作物内系间也存在显著的变异。在大麦中，野燕麦生长与透光的高度正相关表明，选系有助于野燕麦的综合管理。
In order to stabilize yield potential and reduce inputs, grain crop breeders screen out disease-resistant and insect-resistant traits, thereby making it possible to breed varieties that have increased tolerance to weed spread by selecting for growth-inhibiting habits that inhibit weed development. Our goal is to determine if there is a difference in the ability of wheat and barley to reduce translucency and inhibit the growth of wild oats. Based on our results, there were significant genetic variations in inter-row solar light transmission within spring wheat, winter wheat and spring barley, and four of the seven pilot study sites showed a significant negative correlation between plant height and light transmission. Six barley lines and six spring wheat lines with similar plant light levels and different light transmissivity were used to test the inhibition effect on wild oats. Barley and wild oats had stronger competition ability than wheat. The former oat biomass and seed yield were Half of those who receive barley allow 43% less light than wheat. The growth traits of wild oats also showed significant variation among the crop internodes. In barley, a highly positive correlation between wild oat growth and light transmission suggests that the selection system contributes to the integrated management of wild oats.