泡桐辐射诱变抗病性选择

Disease Resistance Selection through Radiomutagenesis to the Paulownia

应用^60Co对泡桐种根进行了辐射诱变抗病性选择试验，结果表明，适宜剂量为1000～3000rad，致死剂量为6000rad，且获得了一个较好的突变植株——F1k-5，它不但对丛枝病具有较强的抗性，而且具有较大的直径生长量，可作为一个有价值的亲本进一步杂交，有望选育出抗病速生的优良新品种。

Adopting ^60Co radiomutagenic method, Paulownia resistance to witches^1 broom results showed that the suitable doses are 1 000-3 000 tad, lethal dose is 6000 tad. A obtained. It has the higher resistance and a bigger growth. F1k-5 is a better parent that will may breed a new variety with disease resistance and quick growing.