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众所周知,在玉米生产过程中,所利用的杂交一代种其亲本自交系的纯度是直接影响玉米产量高低的一个主要因素。一般说来,用较低纯度的玉米自交系配制的杂交一代种比用高纯度自交系配制的同一杂交种要减产10%-20%。随着自交
It is well known that the purity of the parental inbred lines utilized during maize production is a major factor that directly affects maize yield. In general, hybrids prepared with less pure maize inbred lines yield 10% -20% less than the same hybrids formulated with high purity inbred lines. With selfing