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用5—30KR剂量~(60)COγ射线照射玉米种子,对幼苗生长的抑制效应随照射剂量的增加而明显增强.过氧化物酶同工酶谱测定表明,经不同剂量~(80)COγ射线照射后,叶片增加1条负极向酶带;同时在高剂量(25—30KR)照射下,有3条酶带活性明显增强.叶片正极向同工酶谱,在30KR高剂量照射后也诱导产生2条酶带.经5—25KR剂量照射后,胚轴增加1条负极向酶带,而在30KR时该酶带又消失;同时,在15—30KR下随照射剂量的增加,有1条酶带活性明显减弱.上述结果表明,经γ射线照射后,随着幼苗外部形态的变化,也发生了内部分子水平的变化,但这种变化是不完全相关的.
The inhibitory effect of 5-30KR CO_2 irradiation on maize seedlings significantly inhibited the growth of seedlings with the increase of irradiation dose.The isoenzymes of peroxidase showed that, After irradiation, one piece of negative pole was added to the enzyme band, and at the same time, the activity of three bands was significantly enhanced under the irradiation of high dose (25-30KR) 2 bands.After 5-25KR dose irradiation, the hypocotyl added a negative to the enzyme band, and at 30KR the enzyme band disappeared; the same time, at 15-30KR with the irradiation dose increased, there is an enzyme Band activity was significantly reduced.The above results show that, after γ-ray irradiation, with the changes in the external morphology of seedlings, but also changes in the internal molecular level, but this change is not completely related.