论文部分内容阅读
“育种”是中学生物教学中的重点、难点问题,但同学们在学习育种时往往一知半解,尤其遇到一些关于育种的应用问题时常常不知所措,甚至出现答非所问、张冠李戴的现象。那么如何利用育种的知识去解决一系列育种的应用问题呢?首先要清楚地知道中学生物涉及了哪几种类型的育种方式?从广义上来讲,中学生物中涉及的育种方式有以下几种类型:杂交育种、诱变育种、单倍体育种、多倍体育种、激素育种、基因工程育种、细胞工程育种。
Breeding is a key and difficult issue in biology teaching in middle schools. However, students often have a limited knowledge of breeding and breeding. In particular, they often find themselves overwhelmed with some application questions about breeding, and even appear unanswered questions. So how to use the knowledge of breeding to solve a series of breeding applications? First of all it is necessary to clearly know that secondary school biology involves several types of breeding methods? Broadly speaking, secondary biology involved in the breeding of the following types : Hybrid breeding, mutagenesis breeding, haploid breeding, polyploid breeding, hormone breeding, genetic engineering breeding, cell engineering breeding.