这棵树患根瘤病。
This tree suffers from canker .
桃树根瘤病防治效果初报
Preliminary Report on The Effects of Peach Knob Control
抗菌肽基因转化樱桃矮化砧木获得抗根瘤病的转基因植株
Pathogen - resistant Transgenic Plant from Dwarfing Rootstock of Cherry by Introducing Antibacterial Polypeptide Genes