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导言电离幅射可提高作物突变率,但突变因子在M_1代一般是不可见的,M_2代必须具有足够的群体隐性突变才能充分显现。如果能通过M_1代生理损伤参数,来预示M_2代的突变频率和突变谱,就能在有限的M_2群体中提高选择效果。不少学者研究过与M_2代突变频率和突变谱等参数有关的M_1代生理损伤和染色体突变各种参数的关联性。Galdecott(1966)指出,M_1种苗高度与M_2代叶绿素突变频率之间有密切相关。Singh和Dub(1972)指出,M_1结实性和
Introduction Ionizing radiation can improve the crop mutation rate, but the mutation factor is generally invisible in M_1 generation, M_2 generation population must have enough recessive mutations in order to fully show. If the M_1 generation physiological damage parameters can be used to predict the M_2 generation mutation frequency and mutation spectrum, the selection effect can be improved in the limited M_2 population. Many scholars have studied with the M_2 generation mutation frequency and mutation parameters such as M_1 generation of physiological damage and chromosome mutation associated with various parameters. Galdecott (1966) pointed out that there is a close correlation between M_1 seedling height and M_2 chlorophyll mutation frequency. Singh and Dub (1972) point out that M_1 is strong and solid