varietal development of soybean

例句：

1. 1. The varietal development ofthe plant is closely related to its environment.
   植物的品种发展与其环境密切相关。
2. 2. Varietal development is a crucial factor indetermining the success of a crop.
   品种发展是决定作物成功的关键因素。
3. 3. The varietal development of the plant has beenstudied extensively in recent years.
   近年来，植物的品种发展已经得到了广泛的研究。