水稻耐低钾变异后代的根系生理研究

Physiological Studies on Root System of Rice Offspring Tolerant to K Deficiency

以室内苗期低钾介质中筛选出的 1 0个耐低钾变异后代和其对应的 5个接受外源DNA导入的水稻亲本为材料 ,比较研究在正常钾和低钾 2个水平下的根系生理 ,发现在低钾条件下耐低钾后代的根长、根干重均比其受体要大 ,根系活力比其受体要强 ,表现出受缺钾影响较小的特性。

Ten K deficiency tolerant rice materials and five recipients are cultured in nutrition solution Under low potassium supply,root length and dry weight of the K-deficient tolerant rice are longer and higher than their recipients The K-deficit tolerant rice root system activity has been greater than that of their recipients