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甜橙和葡萄柚的遗传改良通过常规的植物育种方法已受到限制,因为这些柑桔类型都是杂合性的,主要靠珠心胚繁殖。因此选择自然发生的体细胞突变成为主要的改良方法。辐射亦许也是一种提高营养繁殖植物突变的有价值的手段。 在佛罗里达州,凤梨甜橙和福斯特、邓肯葡萄柚品质优良,可就是因为它们的多籽性而在鲜销市场上受到限制,正由于它们所具有的优质特性而被选为伽马射线的辐射对象,试图通过辐射得到商品性无籽果实的无性繁殖系。
The genetic improvement of sweet oranges and grapefruits has been limited by conventional methods of plant breeding because these citrus types are heterozygous and predominately reborn on the bead kernel. So choose naturally occurring somatic mutations become the main method of improvement. Radiation may also be a valuable tool to increase the mutation in vegetatively propagated plants. In Florida, the quality of pineapple oranges and forster, Duncan grapefruit may be limited due to their multi-seeded nature, and is being selected as a gamma ray due to their excellent properties Of radiant objects, trying to obtain commercially vegetative seedless vegetative lines by radiation.