wheat variety development by selection

例句：

1. 1. Theresearch on wheat varieties development by selection iscrucial for improving crop yield.
   小麦品种通过选择的研究对于提高作物产量至关重要。
2. 2. The scientistshave developed several new wheat varieties through selection.
   科学家们已经通过选择开发了几种新的小麦品种。
3. 3. The success of wheat varieties development byselection depends on the quality of breeding techniques.
   小麦品种通过选择的成功取决于育种技术的质量。