马铃薯品种改良马铃薯为茄科一年生块茎作物。在茄科属中有150多个种是结薯的,但可供人类食用的,只有马铃薯这一个种。达尔文在《动物和植物在家养下的变异》一书中指出:若干古老植物的祖先已经发生了这样深刻的变化,以致不可能辨认出它的原始祖先类型,原因是它们中的一些来自几个物种杂交变异而混合。现代科学研究查明,马铃薯是由野生薯进化而来或是由几个野生薯杂交而产生的后代。野生马铃薯广泛地分布于南美洲的秘鲁、玻利维亚和阿根廷直至中美洲沿安第斯山麓的多雨山地和阴密丛林地带,还有一些野生种生长在海拔 Potato Varieties Potatoes are annual tuber crops of Solanaceae. More than 150 species of Solanaceae are tubers, but only one species of potato is available for human consumption. Darwin pointed out in his book “Variation at home and at home of animals and plants,” that the ancestors of several ancient plants have undergone such profound changes that it is impossible to discern their original ancestor types because some of them come from several Species hybridize and mutate. Modern scientific research has identified that potatoes are derived from wild potato or from the hybridization of several wild potatoes. Wild potatoes are widely distributed in Peru, Bolivia and Argentina in South America up to the rainy and jungle forests of the Andes in Central America, and some wild species grow at altitude