高空处理的小麦种子ＳＰ１代基本无变异，ＳＰ２代在幼苗习性、抽穗期、株高、穗型、粒质、成穗数等性状均产生较明显的变异，这些变异一般在ＳＰ３代中，ＳＰ４代稳定，缩短了育种年限。通过对变异性状的选择已育出两个苗头品系。高空诱变为小麦育种提供了一条新的育种途径，也为航天部门为农业服务开拓了一个新的领域。 SP1 generation of high-altitude wheat seed treatment basically no variation, SP2 generation in seedling habits, heading date, plant height, panicle type, grain number, spike number and other traits have obvious variation, these mutations are generally SP3 generation, SP4 On behalf of stability, shorten the breeding years. Two mutant lines have been bred by selection. Altitude mutagenesis provided a new breeding pathway for wheat breeding and opened up a new area for the agriculture sector in the aerospace sector.