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马铃薯选种主要包括两方面,(1)选抗(耐)病性或抗(耐)热性强的品种;(2)淘汰病弱株(也就是选健壮株)以及不正常的杂株。这是国内外计多马铃薯产区若干年来防治退化的有效措施。六、七十年(或更长时期)来,广东农民通过选品种、选株、选薯块基本上防止退化,使退化率减低到10％以内。但是,只要不选,则四、五年内退化率就可高达100％,以至失去了一个可贵的品种。
Potato selection mainly includes two aspects: (1) selection of resistant (resistant) or resistant to (heat) strong varieties; (2) elimination of diseased (ie, selected robust) and abnormal hybrids. This is an effective measure to prevent and control degradation in many potato producing areas at home and abroad over the years. Six or seventy years (or longer), Guangdong farmers through the selection of varieties, selected strains, choose potato blocks basically prevent degradation, the degradation rate reduced to 10%. However, if they are not elected, the rate of degeneration will be as high as 100% in four or five years and a valuable variety will be lost.