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1.用X射线及Co~(60)照射种子以及用放射性同位素P~(32)浸种处理后,或仅作发芽观察,或盆栽或进行田间试验,以观察外照射和内照射对植物生长发育的影响。2.X 射线照射种子对发芽的影响不大但使发芽延迟。受高剂量照射的种子虽能发芽,不能继续生长真叶和新梢,根的发育亦受抑制。3.高剂量射线照射种子,显著的抑制生长发育,多半在2万伦琴左右起始。在有些植物中,1千伦琴左右的剂量有促进生长的表现。在另一些植物中,更高一些的剂量也出现生长优势。但一般的说,促进作用不十分明显。在有些重复试验中,其高峯不重迭在一点上。但可以说,低剂量的处理是无害的,且有促进生长发育的可能性。4.在用种子进行照射时,萝卜、白菜、菠菜、向日葵、玉米、蓖麻等对 X 射线的抵抗力较大,而大豆等的抵抗力较低。5.P~(32)浸种的结果,处理之间差异不显著。玉米和大豆经700以及无青甘蓝经衽500微居里/公斤种子的 P~(32)浸种处理,均无抑制生长。
1. X-ray and Co ~ (60) irradiation seeds and radioactive isotope P ~ (32) soaking treatment, or only for germination, or potted or field experiments to observe the external radiation and internal irradiation on plant growth and development Impact. 2.X-ray irradiation has little effect on germination but delayed germination. Although the seeds irradiated by high doses can germinate, they can not continue to grow true leaves and shoots, and the development of roots is also inhibited. 3. High-dose radiation seeds, significantly inhibited the growth and development, most of the beginning of about 20,000 Lun Qin. In some plants, a dose of about 1000 Qin promote growth performance. In other plants, higher doses also show growth advantages. But in general, the promotion is not very obvious. In some trials, the peaks do not overlap at one point. However, it can be said that low-dose treatments are harmless and have the potential to promote growth and development. 4. In the seed irradiation, radish, cabbage, spinach, sunflower, corn, castor and other X-ray greater resistance, while the lower the resistance of soybeans. 5. P ~ (32) soaking results, the difference between treatments was not significant. Corn and soybean had no growth inhibition when treated with P ~ (32) soaking seeds of 700 and no-green cabbage with 500 microcurrents / kg seeds.