植物辐射诱变育种概况 农作物的品种改良可利用杂交育种及利用各种放射线进行辐射诱变育种。到2000年为止,诱发突变育种育成的登录品种数,全世界达到2000个以上,其中日本有150个品种。利用的诱变源中,70％以上是γ射线和X射线,若加上中子和β射线等,占诱变源的90％以上。 植物辐射诱变育种有四方面的优点:1.保持原品种的优良特性, Plant Radiation Mutagenesis Breeding Overview Crop varieties can be improved by crossbreeding and the use of various radiation for radiation-induced breeding. By the year 2000, the number of registered varieties inducing mutation breeding has reached more than 2,000 in the world, of which there are 150 varieties in Japan. 70% of the mutagens used are γ-rays and X-rays. If neutrons and β-rays are added, they account for more than 90% of the mutagens. Plant radiation mutation breeding has four advantages: 1. Maintain the original varieties of fine characteristics,