从玉米的表型认知到分子水平的认知,分子生物学技术提供了有效的方法手段,特别是近年SSR分子标记技术的快速发展已经成为被国内外广泛应用的方法,纯度作为商业种子最重要的指标之一,可以应用SSR技术对其进行检测,从而保证了种子的质量,为我国的种业市场保证农民的合法权益做出了重要贡献。现在国内很多种业公司依然利用形态特征、生理特性、同工酶、种子贮藏蛋白进行品种纯度检验,但是由于我国使用的亲本自交系比较集中,种质基础相对比较狭窄,所以容易受到环境因素的影响而不能做出有效的 In recent years, the rapid development of SSR molecular marker technology has become a widely used method both at home and abroad, with the purity as the most important commercial seed One of the important indexes is that SSR technology can be used to test the quality of seeds so as to ensure the quality of seeds and make an important contribution to ensuring the legitimate rights and interests of peasants in the seed market of our country. At present, many domestic seed companies are still using varieties of morphological characteristics, physiological characteristics, isozymes, and seed storage proteins for purity testing. However, due to the relatively concentrated parental inbred lines and relatively narrow germplasm base in China, they are vulnerable to environmental factors The effect can not be made effective