clonal selection theory

例句：

1. 1.The theory of clonal selection has beenwidely applied in plant breeding.
   克隆选择理论在植物育种中得到了广泛应用。
2. 2. This research isbased on the clonal selection theory,aiming to improve crop yield.
   这项研究基于克隆选择理论，旨在提高作物产量。
3. 3.The clonal selection theory provides a valuabletool for studying the genetic diversity of plants.
   克隆选择理论为研究植物遗传多样性提供了宝贵的工具。