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农业科学 多倍体 Breeders have bred a great deal of new flower varieties by taking routine cross breeding, radiation breeding, tissue culture breeding, polyploidy breeding, and spaceflight breeding etc. 人们通过常规杂交育种、辐射育种、组织培养育种、多倍体育种、航天育种等手段培育了大量的花卉新品种。
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Pineapple polyploidies have not been obtained by physics or chemistry methods. 迄今,利用物理、化学等方法人工诱导菠萝多倍体尚未取得成功。
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