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Diseases of Primulas
English primrose Primula vulgaris Huds. (P. acaulis), Polyanthus Primula Pruhonicensis hybrids, Fairy primrose P. malacoides Franch., German primrose P. obconica Hance, Chinese primrose P. sinensis Sabine ex Lindl.

Margery Daughtrey, collator (last update 5/25/00)

BACTERIAL DISEASES

Bacterial fasciation

Rhodococcus fascians (Tilford 1936) Goodfellow 1984, comb. nov.

Bacterial soft rot

Erwinia carotovora subsp. carotovora (Jones 1901) Bergey
    et al. 1923

= Pectobacterium carotovorum subsp. carotovorum (Jones
    1901) Hauben et al. 1999, comb. nov.

Crown gall

Agrobacterium tumefaciens (Smith and Townsend 1907) Conn 1942

Pseudomonas leaf spot

Pseudomonas cichorii (on P. elatior) (Swingle 1925) Stapp
    1928

Pseudomonas syringae pv. primulae van Hall 1902

FUNGAL DISEASES

Anthracnose

Colletotrichum gloeosporioides (Penz.) Penz. & Sacc. in Penz.

Botrytis blight

Botrytis cinerea Pers.:Fr.

Phytophthora crown and root rot

Phytophthora cactorum (Lebert & Cohn) J. Schröt.

P. citricola Sawada

P. parasitica Dastur

Powdery mildew

Erysiphe polygoni DC.

Pythium root rot

Pythium irregulare Buisman

P. megalacanthum de Bary

P. spinosum Sawada

P. ultimum Trow

Ramularia leaf spot

Ramularia primulae Thuem.

Rhizoctonia root and crown rot

Rhizoctonia solani Kühn

Rust

Puccinia aristidae Tracy

Uromyces apiosporus Hazsl.

NEMATODES, PARASITIC

Bulb and stem nematode

Ditylenchus dipsaci (Kühn) Filipjev

Foliar nematode

Aphelenchoides fragariae (Ritzema Bos) Christie

A. ritzemabosi (Schwartz) Steiner & Buhrer

Lesion nematode

Pratylenchus sp.

Root-knot nematode

Meloidogyne hapla Chitwood

M. javanica (Treub) Chitwood

M. arenaria (Neal) Chitwood

VIRAL AND VIROID DISEASES

Alfalfa mosaic

genus Alfamovirus, Alfalfa mosaic virus (AMV)

Cucumber mosaic

genus Cucumovirus, Cucumber mosaic virus (CMV)

Impatiens necrotic spot

genus Tospovirus, Impatiens necrotic spot virus (INSV)

Primula mosaic

genus Potyvirus, Primula mosaic virus (PrMV)

Primula mottle

genus Potyvirus, Primula mottle virus (PrMoV)

Tobacco necrosis

genus Necrovirus, Tobacco necrosis virus (TNV)

Tomato bushy stunt

genus Tombusvirus, Tomato bushy stunt virus (TBSV)

Tomato spotted wilt

genus Tospovirus, Tomato spotted wilt virus (TSWV)

PHYTOPLASMAL DISEASES

Aster yellows

Aster yellows phytoplasma