国内外长期以来都把选育无核品种作为柑桔育种的主要目标之一。现有的无核或少核的柑桔品种,如伏令夏橙、华盛顿脐橙、以及温州蜜柑等世界名牌柑桔品种,几乎都来自于自然突变体。世界柑桔辐射育种迄今为止只报道美国德克萨斯州用热中子处理哈德逊葡萄柚,获得一个少核而色泽深的星路比葡萄柚突变体。二十多年来,我国柑桔辐射 Long-term domestic and foreign breeding of non-nuclear varieties as one of the main objectives of citrus breeding. Existing non-nuclear or less nuclear varieties of citrus, such as summer orange, Washington Navel orange, and Wenzhou Satsuma and other world-renowned citrus varieties, almost all from natural mutants. The world’s citrus radiation breeding so far only reported the United States of Texas with thermal neutron treatment of Hudson grapefruit, access to a less nuclear and darker color than the road grapefruit mutants. For more than two decades, China’s citrus radiation