Studies on the Taxonomy of Ascochyta in Northeastern China
Sun Junde; Lu Guozhong;Liu Weicheng;Bai Jinkai(Department of Plant Protection,Shenyang Agricultural Unicersity, Shenyang 110161)
It is easy and effective to observe the conidingiogenous cells of Ascochyta by using phase microscope associated with frozen microtome. 68 species or Ascochyta from northeasternChina were completely illustrated,which include four new species Ascochyta areliae Sun et Bai,A.maackiae Sun et Bai,A.nicandrae Sun et Bai,A.zanthoxyli Sun et Bai,and one combination,A.osmophila (Davis) Lu et Bai,and nineteen new record species for China. The taxonomic criteria or Ascochyta are discussed in this paper.