【摘要】 本试验用⁶⁰Co γ射线处理山茶花的嫩枝插条,1年生小苗和3—4年生植株,研究其辐射敏感性和诱变规律。结果表明,嫩枝插条的适宜剂量范围为1—3krad,成长植株宜控制在2krad以下。不同品种对射线敏感性不同,所引起的花色、花型突变频率亦不同,其辐度在2.5—12.0％。经3年选育,已获得观赏价值高的突变体。更多还原

【Abstract】 Studies on the radio sensitivity and mutagcnic effects in Camellia (Camellia Japoncia L. ) were carried out with the shoot cuttings,one-year seedlings and three or four-year plants irradiated with 60Co-γ rays. Results obtained showed that the radiosensitivities varied greatly in cult-ivars and in different parts of the plant,The suitable irradiation doses for shoot cuttings are 1-3 krad. The treatment of low doses (bellow 2 k-rad ) resulted in higher frequency of mutation with plants of high sensitivity to γ-rays.The frequencies of mutation in flower color and type were 2.5-12.0%.The mutant with ornamental value has been obtained.更多还原