A new disease on keteleeria evelyniana mast
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Abstract
A twig rust of Keteleeria evelyniana Mast(Periderm ium keteleeriae-evelynianae Zhou et Chen)found in Wingquan,Kunming is reported in this paper.Thedisease is new both at home and abroad.It is also compared with another twig rust caused by Peridermium kunmingense Jen in symptom,morphological charactristics of path-ogens,surface structures of aeciospores in SEM and nuclear staining of aeciospores.
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