parental variety

例句：

1. 1. The new variety of apples is more resistant to disease.
   这种新苹果品种对疾病更具有抵抗力。
2. 2.The farmer has a large parental variety of wheat planted in his fields.
   这位农民在他的田地里种植了一大片父母亲种的小麦。
3. 3. The scientist studied the genetics of parental varieties and discovered a new gene that could help with crop yield.
   这位科学家研究了父母亲种的品种的遗传学，并发现了一种新的基因，可以帮助提高作物产量。