在花培过程中,为了提高诱导率,扩大变异类型,我们进行了用钴~(60)辐射处理水稻幼穗及其愈伤组织的试验,取得了一定效果。辐射剂量为100、500、1,000伦琴三种,品种为双丰4号和武农早,处理花药数为588—880个。试验结果简介于下: 一、以用100伦琴处理的愈伤组织诱导率最高,武农早和双丰4号两品种分别为4.38％及7.65％,而对照(未经处理)仅为1.14％和6.04％。二、辐射处理引起的性状变异于H_1(子一代)中 In the process of flower bud cultivation, in order to increase the induction rate and expand the variation type, we conducted the experiment of treating the panicle and the callus of rice with cobalt ~ (60) radiation and achieved some results. The radiation dose was 100, 500, and 1,000 Roentgen, with the varieties of Shuangfeng No.4 and Wu’nongzao and the number of anther treatments of 588-880. The results are summarized as follows: First, callus induction with 100 roentgens was the highest, with 4.38% and 7.65% for the two varieties of Wu-Nong-He and Shuang-Feng-4, respectively, while the control (untreated) And 6.04%. Second, the radiation-induced trait mutation in H_1 (sub-generation)