水稻光周期诱导过程中核酸的变化

THE CHANGE OF NUCLEIC ACID DURING THE PHOTOPERIOD INDUCE ON RICE

从不同次数短日处理的晚稻叶片中提取DNA和RNA,研究了RNA含量的变化对水稻及牵牛花成花诱导的影响。结果表明叶片中RNA的含量随短日处理次数而增加;用生长点已分化的水稻植株的核酸(RNA.DNA)喷施叶面,处理营养生长的水稻,可以促进其抽穗;将短日处理不同天数及光中断处理的水稻叶片RNA,注射到牵牛花幼苗的下胚轴中,RNA的来源不同其诱导成花的效果也不同。表明水稻经一定的光周期诱导后,体内的核酸发生了某种改变。

We examined the RNA and DNA isolated from rice (O. Sativa) leaves which had beed treated with 5, 7, 9 cycles of 10 hour short-days. The results indicated that RNA and DNA stimulated the formation of young panicles in rice and flower bud in morning glory(Pharbitis nil).