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蔬菜品种退化是由于品种遗传性变异引起原品种的优良性状、典型性和一致性部分或全部丧失的现象。品种退化常表现在产量下降、品质变
The degradation of vegetable varieties is due to the genetic variation of varieties caused by the original varieties of fine traits, typicality and consistency of the phenomenon of partial or total loss. Varieties often show deterioration in yield decline, quality change