8 1 Implication of Plant Introduction 植物引种的作用 What is plant introduction? Narrow sense---introduction of superior cultivars Broad sense---introduction of plants(or crops) 2. Implications of Plant introduction p.50-52.1. What is plant introduction? Narrow sense---introduction of superior cultivars Broad sense---introduction of plants (or crops) 2. Implications of Plant introduction p.50-52. §1 Implication of Plant Introduction 植物引种的作用