“育种类”题目一直是考试的重点、热点,是高考核心知识点中的遗传、变异与进化的重要内容。本文对生物育种的相关问题进行了深入分析和思考,对几种育种方法的原理、实验步骤及应用方面做了详细比较,以便学生更好地掌握和区分几种育种方法的实质,从而能扎实掌握相关知识点。生物育种的含义生物育种是指利用遗传学、细胞生物学、现代生物工程技术等方法原理培育生物新品种的过程。生物育种的目的是培育或创造具有优良性状的生物新品种,提高 “Breeding ” subject has always been the focus of exams, hot spots, college entrance examination is the core of knowledge of genetic, mutation and evolution of the important elements. In this paper, we conducted in-depth analysis and reflection on the relevant issues of biological breeding, made detailed comparisons on the principles, experimental procedures and application aspects of several breeding methods so that students can better grasp and distinguish the essence of several breeding methods, Master the relevant knowledge points. The meaning of biological breeding Biological breeding refers to the use of genetics, cell biology, modern bio-engineering techniques and other methods to cultivate new biological varieties of the process. The purpose of biological breeding is to breed or create new varieties of organisms with excellent traits and increase them