广州地区番石榴病害鉴定

IDENTIFICATION ON THE DISEASES OF GUAVA IN GUANGZHOU DISTRICT

根据近几年对广州地区番石榴病害调查,初步鉴定出番石榴病害13种;真菌病害12种,藻类病害1种。其中果实病害7种,叶斑类6种。果实上以炭疽病严重,其次为褐腐病。黑腐病(Botryodiplodia theobromae Pat.);褐腐病(phomopsis psidii de Camara);茎点霉果腐病(phoma psidii Ahmad);果褐点病(Cercospora psidii Rengel);褐污斑病(Mycovellosiella myrtacearum A.N.Rai et al );叶斑病(phyllosticta psidii.Tassi);叶枯病(phomopsis destructum D.P.C. Rao,Agrawal et Saksena);灰斑病(pestalotiopsis disseminatum (Thuem.)Stey.)8种病害系国内首次报道。3种病原为新种,将另文发表。本文最后讨论了有待于进一步研究的问题。

Thirteen diseases including twelve fungal diseases and one algal disease on guava have been identified recently. Among them there are seven diseases on fruits and six on leaves. Anthrac -nose (Glomerella cingulata ) causes most serious damage: Phomopsis rot P(homopsis psidii) is the next. Eight diseases caused by Botryodipiodia theobramae, Phomopsis psidii, P. destructum. Phoma psidii, Phyllosticta psidii, Pestalotiopsis disseminatum, Cercospora psidii and, Mycovellosiella myrtacearum are new records in China. Further investigation on the guava diseases is discussed.