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我们对大白菜杂交一代品种进行了田间定点定株系统调查。调查的的目的是:观察人白菜品种的发病规律和它在田间不同生育阶段的抗病性,为了解品种抗病的可靠程度,品种抗病遗传规律以及选淘亲本等方面提供参考性材料。
We conducted a field-specific systematic survey of Chinese cabbage hybrids. The purpose of the investigation is to observe the pathogenesis of human cabbage varieties and its disease resistance in different growth stages of the field and provide reference materials for understanding the reliability of the varieties, the genetic law of disease resistance and the selection of parents.