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11个正常细胞质的玉米自交系双列杂交对小斑病菌0小种的病级和三个抗病因素(病斑数量,病斑面积和单位病斑面积的产孢量)、一般配合力方差和特殊配合力方差都达到极显著水准,加性与非加性遗传基因效应都是重要的。这两种配合力效应依抗病类型而不同。一般配合力,抗病系的为负效应,感病系的为正效应。而特殊配合力最大负效应组合,发生在抗×中、中×中和感×感类型,这表明抗性是部分显性的。 亲本自交系病级、病斑数量、或者三因素乘积与杂种一代抗病性(病级)呈高度相关性,因此杂交种抗病性可利用亲本进行预测。
Eleven normal cytoplasmic maize inbred lines of two pairs of small blight pathogen 0 race species and three resistance factors (lesion number, lesion area and unit lesion area of sporulation), with the general combining ability Variance and special combining ability variance reached extremely significant level, both additive and non-additive genetic effects are important. The effects of these two combinations are different depending on the type of disease resistance. The general combining ability, the resistance of the line is a negative effect, the susceptible line is a positive effect. However, the maximal negative effect combinations of special combining ability occurred in the resistant ×, medium × neutralized × susceptible lines, indicating that the resistance is partially dominant. The parental inbred lines were highly susceptible to the disease stage, the number of lesions, or the three-factor product and the disease resistance of the hybrid generation (disease stage). Therefore, the disease resistance of the hybrids can be predicted by using the parents.