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为了探索大豆人工诱变育种新途径,提高大豆诱变育种效果,以大豆合丰50为试验材料,利用航天搭载与60Co-γ辐射的复合诱变处理,对M22个株系主要农艺性状进行分析。结果表明:群体株高分别为(90.47±6.56)cm和(95.26±6.13)cm、主茎节数分别为(18.2±1.34)个和(16.77±1.38)个与对照差异达到极显著水平,底荚高、单株荚数和单株粒数与对照有差异,但没有达到显著水平;M22个株系株高、主茎节数、底荚高、单株荚数和单株粒数的变异率分别为:9.3%、6.9%、2.3%、4.6%、9.3%和9.4%、7.5%、3.8%、5.6%、3.8%,其中正向变异占总变异的比例分别为:49.4%、33.1%、12.5%、51.1%、49.6%和19.8%、24.8%、50.0%、32.2%、47.6%,通过群体变异和后代变异率以及正向变异所占的比例可以看出,航天搭载与60 Co-γ辐射的复合处理可以为大豆新品种选育所利用。
In order to explore new ways of artificial mutagenesis of soybean and improve the effect of mutagenesis of soybean, the main agronomic traits of M22 lines were analyzed by using composite mutagenesis of space shuttle and 60Co-γ radiation with soybean Hefeng 50 as test material . The results showed that the population height of the population was (90.47 ± 6.56) cm and (95.26 ± 6.13) cm respectively, the number of main stem segments was (18.2 ± 1.34) and (16.77 ± 1.38) Pod height, number of pods per plant and grain number per plant were different from those of the control, but did not reach significant level. The variation of plant height, number of main stems, height of pods, pods and grains per plant The rates of positive variation were accounted for 9.3%, 6.9%, 2.3%, 4.6%, 9.3% and 9.4%, 7.5%, 3.8%, 5.6% and 3.8% %, 12.5%, 51.1%, 49.6% and 19.8%, 24.8%, 50.0%, 32.2% and 47.6% respectively. As can be seen from the percentage of population variation and the rate of variation of the offspring as well as the positive variation, -γ radiation composite treatment can be used for breeding new varieties of soybean.