290 – II.3. BRASSICA CROPS (BRASSICA SPP.)
Table 3.A1.2. Diseases of rapeseed = Canola
(B. napus L. and Brassica rapa L. [= B. campestris L.]) (cont.)
Common name(s) Scientific name (and synonyms)
Head rot Rhizoctonia solani Kühn
Thanatephorus cucumeris (A.B. Frank) Donk [teleomorph]
Leaf spot* Alternaria alternata (Fr.: Fr.) Keissl. (Canada)
Ascochyta spp. (former USSR)
Light leaf spot Pyrenopeziza brassicae Sutton and Rawlinson in Rawlinson et al.(1978)
Cylindrosporium concentricum Grev. [anamorph]
Pod rot* Alternaria alternata (Fr.: Fr.) Keissl. (Canada)
Cladosporium sp.
Powdery mildew Erysiphe polygoni DC.
E. cruciferarum Opiz ex Junell.
Ring spot Mycosphaerella brassicicola (Duby) Lindau in Engl. and Prantl
Asteromella brassica (Chev.) Boerema and Van Kesteren [anamorph]
Root rot Alternaria alternata (Fr.: Fr.) Keissl.
Fusarium spp.
Macrophomina phaseolina (Tassi) Goidanich
Phymatotrichopsis omnivora (Duggar) Hennebert
Phytophthora megasperma Drechs.
Pythium debaryanum Auct. non R. Hesse
P. irregulare Buisman
Rhizoctonia solani Kühn
Thanatephorus cucumeris (A.B. Frank) Donk [teleomorph]
Sclerotium rolfsii Sacc.
Athelia rolfsii (Curzi) Tu and Kimbrough [teleomorph]
Sclerotinia stem rot Sclerotinia sclerotiorum (Lib.) de Bary
Seed rot, damping-off Alternaria spp.
Fusarium spp.
Gliocladium roseum (Link) Bainier
Nectria ochroleuca (Schwein.) Berk [teleomorph]
Pythium spp.
Rhizoctonia solani Kühn
Thanatephorus cucumeris (A.B. Frank) Donk [teleomorph]
Rhizopus stolonifer (Ehrenb.: Fr) Vuill.
Sclerotium rolfsii Sacc.
Root gall smut* Urocystis brassicae Mundkur (People’s Republic of China, India)
Southern blight (leaf, root
and seed rot)
Sclerotium rolfsii Sacc.
Verticillium wilt* Verticillium longisporum (comb. Nov. Karapappa et al.) (Europe)
White blight* Rhizoctonia solani Kühn (India)
Thanatephorus cucumeris (A.B. Frank) Donk [teleomorph]
White leaf spot = grey
stem (Canada)
Pseudocercosporella capsellae (Ellis and Everh.) Deighton
= Cercosporella brassicae (Faitrey and Roum.) Höhn.
Mycosphaerella capsellae (Inman and Sivansen) [teleomorph]
White rust = staghead Albugo candida (Pers.) Kunze
= A. cruciferarum (DC.) S.F. Gray
(Peronospora sp. commonly present in staghead phase)
Yellows Fusarium oxysporum Schlechtend.: Fr.
Nematodes, parasitic
Cyst nematode Heterodera cruciferae Franklin
H. schachtii Schmidt
Lesion nematode Pratylenchus spp.
P. pratensis (de Man) Filipjev
Root-knot nematode Meloidogyne spp.
