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以百日草为试材,采用14MeV的单能快中子辐照百日草干种子,研究了不同剂量快中子辐射对当代百日草种子的萌发及幼苗的生长状况的影响。结果表明:各辐射剂量处理组的百日草种子发芽率和幼苗株高与对照相比无显著性变化;在表型性状的观察中,辐射后的百日草叶片和花部性状均发生较明显变异,其中叶子变异性状在植株生长过程中逐渐恢复,而花型花色的变异性状基本稳定;百日草病害调查结果显示中子辐射处理后的幼苗感染黑斑病的比率明显减低。综上所述,中子辐射技术对百日草品种改良是可行的。中子辐照百日草生物性状的研究为培育优良花卉新品种提供了重要的参考和依据。
Taking Zinnia elegans as test material, 14 MeV single-energy fast neutron was used to irradiate Zinnia sagittatus seed to study the effects of different doses of fast neutron radiation on the germination and seedling growth of Zinnia elegans. The results showed that there was no significant change in seed germination percentage and seedling height of Zinnia sesbania seedlings treated with different doses of radiation. Compared with the control, the seedlings of Zinnia elegans The variation of leaf traits gradually recovered during plant growth while the variation traits of flower type were basically stable. The results of Zinnia flavescens disease showed that the ratio of infected black spot of seedlings after neutron irradiation was significantly reduced. In summary, neutron radiation technology is feasible for the improvement of varieties of Zinnia. Neutron irradiation Zinnia biological characteristics of the study to cultivate good new varieties of flowers provides an important reference and basis.