A TMV-Resistant Increase Material—Banlangen

It has been found that the extracting solution of Banlangen (Isatis indigotica)can evidently inhibit TMV increase in Nicotiana tabacum and reduce the extent of the disease of plants inoculated with TMV. The disease index of the treated plants is under 60, while that of the contrasted plants is above 80. The results of the detections on the 10th day after the plants were inoculated 10~(-5) TMV showed that the TMV consistency is 10~(-6) in the treated plants and there were nearly no local lesions on Nicotiana...