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川辐４号是利用２００Ｇｙ的６０Ｃｏ－γ射线对（川辐１号×７８中２８８２）杂交Ｆ１代干种子进行急性照射处理，经系谱法多代选育而成的辐射诱变小麦新品种。川辐４号小麦属穗重型品种。有效穗３００～３３０穗／ｍ２，每穗粒数５０～６０粒，千粒重４３ｇ左右，单穗重可达２．６９ｇ，产量水平为４５００～６７５０ｋｇ／ｈｍ２。株高９０ｃｍ左右，耐肥抗倒，早播早熟，高抗条锈病，耐赤霉病，感白粉病，产量稳定性好，适应性较广。籽粒饱满，品质优良，蛋白质含量１６．８％，湿面筋含量３３．５％。１９９３年４月通过四川省品种审定委员会审定合格，并在全省范围内推广种植，目前累计种植面积已达４．７万公顷。本文就川辐４号小麦新品种的选育成功对辐射诱变在小麦育种上的应用进行了讨论。
Chuan-yun-4 is a new radiation-induced wheat variety, which was treated with 200Gy of 60Co-γ ray and the seeds of F1 generation (Chuan-fu-1 × 78-middle 2882) were treated with acute irradiation. Sichuan Spoke 4 wheat spike heavy varieties. Effective spike 300-330 spike / m2, grain number per spike 50 to 60, weight of about 43g, single spike weight up to 2.69g, the yield level of 4500 ~ 6750kg / hm2. Plant height of about 90cm, resistant to lodging, early sowing early, high resistance to stripe rust, resistance to Fusarium head blight, powdery mildew, yield stability, adaptability. Full grain, good quality, protein content of 16.8%, wet gluten content of 33.5%. In April 1993, it passed the Sichuan Variety Approval Committee and passed the plan of planting in the whole province. At present, the total cultivated area has reached 47,000 hectares. This paper discussed the application of radiation mutagenesis in wheat breeding on the successful breeding of new wheat variety Chuan-yun-4.