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1971年,我们对棉株不同生育阶段的辐射敏感性进行了试验,现小结如下。(一)材料和方法应用~(60)Co-γ射线,对“小叶棉”2～4叶期、向阳棉蕾期和花期分别进行处理。蕾期和花期的处理是:盆钵离源中心距离70厘米(从主茎算起),高度16厘米,照射台离地面20厘米,源升高后离地面36厘米,剂量率24γ/分。苗期辐照剂量率为90γ/分(照河泥块棉苗),具体见表1。(二)结果 1.~(60)Co-γ射线对“小叶棉”苗期的当代效应:于5月12日,对2～4张真叶河泥块棉苗进行活体照射。剂量为300～3000γ,“小叶棉”苗期照射后,植株变
In 1971, we conducted experiments on the radiation sensitivity of cotton plants at different stages of their growth and are summarized as follows. (I) Materials and methods The ~ (60) Co-γ-rays were applied to deal with leaflet stage 2-4, leaf stage and flowering stage respectively. Bud stage and flowering are: bowl from the center of 70 cm (from the main stem count), a height of 16 cm, the irradiation station from the ground 20 cm, 36 cm above the ground after the source of the increase in the dose rate of 24 γ / min. Seedling irradiation dose rate of 90γ / min (River mud nursery stock), as shown in Table 1. (B) the results of 1. ~ (60) Co-γ-ray on the “leaf” cotton seedling of the contemporary effect: on May 12, 2-4 true leaf river cotton seedlings live irradiation. The dose of 300 ~ 3000γ, “lobular cotton” seedling stage after irradiation, the plant changed