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用10—30KR剂量~(60)CO—γ射线处理小麦中引15、St和水稻沪B干种子、幼苗生长期胚根、子叶发育受到明显抑制.对幼苗生长的影响后期(萌发5天后)比早期(开始萌发至萌发第5天)明显,芽鞘的发育对γ射线不敏感.过氧化物酶同工酶的分析结果表明,发育受抑的小麦St、水稻沪B胚根中各增加1—2条负极酶带;发育受抑的小麦中引15、St、水稻沪B子叶中,过氧化物酶同工酶没有产生变化,而从外部形态特征上看没有变化的中引15芽鞘中比对照多2条正极带.上述结果表明,经r射线照射后,植物外部形态特征的变化与内部过氧化物酶同工酶的变化并不完全相关.
Starch and cotyledon growth of seedlings were significantly inhibited by 10-30KR ~ (60) CO-γ irradiation in wheat, and the growth of seedling roots and cotyledons of seedling was inhibited significantly. Compared with the early stage (germinated to germinated day 5), it was obvious that the development of bud sheath was not sensitive to γ-ray.The analysis of peroxidase isozyme showed that the growth of depressed wheat St and rice B increased 1-2 Negative zygote bands. In the development-inhibited wheat, C 15, St, and C and B cotyledons had no change in peroxidase isoenzyme, but no change from the external morphological characteristics There were two more positive bands in the sheath than in the control.The above results indicated that the changes of the morphological characteristics of the plants outside the r-rays were not completely related to the changes of the peroxidase isozymes.