国外蓖麻遗传育种研究十分活跃,尤其杂种优势利用进展很快。为推动我国蓖麻育种向纵深发展,现将有关资料综述如下,以供借鉴。 (一)诱变、品质、抗性育种 诱变育种 Athma,P.等人(印,1982、1984)利用甲基磷酸乙脂、一乙基硫酸醋、水合肼及γ—射线对不同品种进行诱变处理,发现诱发突变谱与品种、诱变剂以及处理时期有关。植株高度的改变是最普遍的突变效应。供试三个品种有两个产生了育性和半矮秆突变。其中一个品种在子叶期、减数分裂期和配子体时期以2000—4000拉德的γ—射线照 Foreign castor genetics and breeding research is very active, especially the utilization of heterosis has progressed rapidly. In order to promote the further development of castor breeding in our country, the relevant information is summarized as follows for reference. (A) Mutagenesis, Quality, Resistance Breeding Mutagenesis Breeding Athma, P. et al. (Indian, 1982, 1984) performed different varieties on methyl ethyl phosphate, ethyl monosulfate, hydrazine hydrate and gamma- Mutagenesis treatment found that induced mutation profiles and varieties, mutagens and the treatment period. Plant height changes are the most common mutation effects. Two of the three varieties tested gave fertility and semi-dwarf mutations. One of the cultivars, in the cotyledon, meiosis and gametophytic periods, was irradiated with γ-rays of 2000-4000 rad