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辐射诱导小麦嵌合体的研究已重复进行了五年。已在 M_1代多次得到嵌合体,其平均诱导频率是2.2‰,最高诱导频率是10.5‰。诱导频率的高低与品种材料及γ照射量大小有关,得到嵌合体的有效γ照射置为40—50kR,嵌合体植株内的突变频率分布是蘖高于主穗,第一分蘖及其二次分蘖有较高的突变并发率。这些结果显示:嵌合体诱导频率可能是一种 M_1代辐射遗传效应的指标。
Radiation-induced wheat chimeras have been repeatedly studied for five years. Chimeras have been obtained multiple times in M_1 generation, with an average induction frequency of 2.2 ‰ and a maximum induction frequency of 10.5 ‰. The frequency of induction was related to the variety of materials and the amount of γ irradiation, and the effective gamma irradiation of the chimera was 40-50kR. The mutation frequency distribution in the mosaic plant was higher than that of the main spike, the first tiller and the second tiller Have a higher rate of mutation concurrency. These results show that the frequency of chimerism induction may be an indicator of the genetic effect of M 1 generation radiation.