抗性机制应用筛选方法一节所介绍的温室和田间筛选,根据这类害虫引起的为害程度把各种试验材料进行分级,淘汰最感虫的品种。通过进一步重复试验,把更多的材料淘汰。选择出来的材料,诸如被作为在育种计划中的抗源授体品种或被投放作为推广品种的优良品系,都必须在作物与昆虫互相作用的影响下进一步评估确断其抗性水平。尽管培育抗性品种并不必要去了解抗性机制,但对昆虫 Resistance Mechanisms Screening of greenhouse and fields as described in the Screening Methods section was used to grade various test materials based on the degree of harm caused by such pests and to eliminate the most susceptible species. By further testing, more material out. Selected materials, such as being used as a source of resistance in breeding programs or elite lines being promoted as promoters, must be further evaluated to determine the level of resistance under the influence of crop-insect interactions. Although it is not necessary to cultivate resistant varieties to understand the mechanism of resistance, but to insects