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农作物的病害对农业生产是一个严重的威胁,它不仅可以使作物大幅度减产,有时甚至可以产生毁灭性的严重后果。解放以来,虽然我国的植物保护工作取得了很大的进展,但是,还有许多作物的病害尚需研究有效的防止措施,如小麦锈病、棉花枯萎病、水稻白叶枯病、玉米大小斑病等。所以有不少科技人员通过用抗病育种的手段来选育抗病品种,从而达到防止病害的目的,但是抗病育种不仅周期长,而且成本高,利用同工酶的分析方法,使作物病害研究以及筛选抗病品种提供了一个省时间、成本低、效率高的方法。
Crop diseases pose a serious threat to agricultural production, which can not only lead to dramatic cuts in crops, but can sometimes also have devastating and catastrophic consequences. Since the liberation, although great progress has been made in plant protection in our country, there are still many crop diseases that need to be studied effectively, such as wheat rust, cotton blight, rice bacterial leaf blight, Wait. Therefore, many scientific and technological personnel through the use of disease-resistant breeding methods to breed resistant varieties, so as to achieve the purpose of disease prevention, disease-resistant breeding is not only long cycle, but also high cost, the use of isozyme analysis, crop disease Research and screening of resistant varieties provide a time-saving, cost-effective and efficient method.