一、绪言斯塔赫耳(Syahcl)曾对南美叶疫病菌侵染巴西橡胶树叶片的各个阶段作过详细的观察,并且进行过寄主与寄生菌相互关系的研究,他着重观察了病菌侵入角质层和建立寄生的早期情况。然而,他并未考虑到抗病和高度抗病胶树的不同的寄生和致病现象。以前寻求南美叶疫病抗病品系的结果表 I. INTRODUCTION Syahcl once made a detailed observation of the stages of infection of the leaves of S. sauteri with the leaf molds of P. sojae in the United States and conducted a study on the relationship between the host and the parasites. And to establish the parasitic early situation. However, he did not consider the different parasitic and pathogenic phenomena of resistant and highly resistant gum trees. Previously sought results of the South American leaf blight resistance strain