氮和磷均高效的亲本材料有7个。
There were 7 wheat parents whose N and P utilization efficiency were high.
无核紫和俄罗斯无核是部分无核品种的原始亲本材料之一；
Monukka and Russian Seedless are the seedless sources of some seedless varieties.
引进国外马铃薯资源，扩大亲本材料，可拓宽和丰富我国马铃薯种质资源。
The introduction of foreign potato resources can expand parent materials and enrich China's potato resources.
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