straight leaf host:www.bspp.org.uk

Listing 1 - 10 from 10 for straight leaf

New Disease Reports - First report of Stagonospora foliicola on harding grass (Phalaris aquatica) in Argentinaloa, Mexico
... blotches, usually with pointed ends and buff centres (Fig. 1). Pycnidia were observed between the leaf veins on dead leaves. Figure 1: Lesions of Stagonospora foliicola on leaves of Phalaris aquatica ... . Pycnidia were globose-aplanate, gray to light brown and ostiolate. Conidia were hyaline, thin-cylindrical, straight to gently curved, with six to eight septa per spore. The average dimensions of 50 ...
www.bspp.org.uk

New Disease Reports - First report of Erysiphe carpinicola (perfect state) in Poland
... hornbeam. White mycelium was present on both leaf surfaces. Appressoria were lobed, occurring in opposite pairs or solitary (Fig. 1). Conidiophores were erect with straight foot-cells (26-) 44-70 µm ... the Botany and Mycology Department in Lublin (LBL M-8589). Figure 3: Chasmothecia on the leaf of Carpinus betulus In Europe this species has previously been recorded in Hungary (Vajna, 2006 ...
www.bspp.org.uk

New Disease Reports - First report of powdery mildew on Deutzia spp. in the UK
... exhibited yellowing and chlorotic circular patches, later merging to form irregular patterns, followed by total leaf cover and senescence (Fig. 1). Figure 1: D. crenata leaves infected with E. deutziae. Showing ... µm, with a basal septum near the branching point, followed by two or three straight cells (Fig. 3). The measurements of the foot cell were shorter than mentioned by Bolay ...
www.bspp.org.uk

New Disease Reports - First report on leaf blight of Lindera obtusiloba caused by Pestalotiopsis microspora in Korea
... yellowish halos; later enlarging, coalescing and becoming more irregular, until the whole leaf blighted (Fig. 1). Figure 1: Severe leaf blight symptoms of a naturally-infected Japanese spicebush. Figure 2: Pestalotiopsis ... 29.1µm long and the basal cell a 4.5-6.9µm long, straight appendage (Fig. 3). These cultural and morphological characteristics are similar to those of Pestalotiopsis microspora ...
www.bspp.org.uk

New Disease Reports - First report of Pestalotiopsis versicolor causing leaf-tip blight on Acacia in China
... long, with a short straight basal pedicel (Fig. 1). The fungus was identified as Pestalotiopsis versicolor, based on Steyaert (1949) and Guba (1961). Figure 1: Symptom of leaf-tip blight of ... . Cambridge, USA: Harvard University Press. Prakash O, Singh SJ, 1975. Pestalotiopsis versicolor - a new leaf spot disease of banana. Indian Phytopathology 28, 265-266. Steyaert RL, 1949. Contribution a ...
www.bspp.org.uk

New Disease Reports - First report of powdery mildew on Caragana arborescens in Hungary caused by Erysiphe palczewskii
... . general view of powdery mildew infection of C. arborescens; C. numerous chasmothecia on the leaf lower surface; D. chasmothecia at different stages of development. The conidiophores were mostly erect ... cells (Fig. 2A & D), equatorial appendages, 9-12 per chasmothecium (Fig. 2A), which were straight, hyaline, smooth, dichotomously branched, with some morphological variation of the apex (Fig. 3) and ...
www.bspp.org.uk

New Disease Reports - Powdery mildew caused by Erysiphe carpinicola on Carpinus betulus in Hungary: the first European report
... the infected areas. Later, during September and October, scattered chasmothecia appeared mainly on the upper leaf surface and were associated with the infected area. (Fig. 2a & b). Infection was severe on ... (Fig. 2 c), equatorial appendages (6-21 per chasmothecium; Fig 2a & b) flexuous or seldom straight, hyaline, smooth, apex closely or loosely circinate (sub helicoid) (Fig. 2d), 1.4-2.6 ...
www.bspp.org.uk

New Disease Reports - Eye-spot of Rudbeckia laciniata caused by Corynespora cassiicola in Brazil
... 1: General view of Rudbeckia laciniata with leaf spot symptoms; 2: Close-up of a leaf with typical eye-spot pattern of lesions A ... m thick), 3-8 septate and brown; conidia fusiform, obclavate to subcylindrical, straight or curved (62.5-154.0 x 18.0-22.5 µ ... of conidia of C. cassiicola Pure cultures were cultivated from sporulating leaf lesions on V8 juice agar. Three unwounded healthy plants were brush ...
www.bspp.org.uk

New Disease Reports - First report of Bipolaris leaf blight of coconut (Cocos nucifera) caused by Bipolaris incurvata in mainland India
... light. The mycelium was septate, branched and brown in colour. Straight or flexuous conidiophores mainly arose in small groups and were, ... fungus was identified as Bipolaris incurvata (Ellis, 1971). Figure 2: Leaf spot and blight symptoms on Coconut leaves To confirm ... incubation. The fungus was consistently re-isolated from infected leaf pieces onto PDA medium, completing Koch’s postulates. In ...
www.bspp.org.uk

New Disease Reports - Plasmopara australis newly recorded from Brazil on the new host Luffa cylindrica
... mildew symptoms. 1. Adaxial view; 2. Abaxial view. Figure 3-6: Close-up of a leaf of Luffa cylindrica with downy mildew symptoms. 3-4. Abaxial view showing vein-delimited lesions ... , as observed under the light microscope: Sporangiophores up to 460 µm long, aseptate, hialine, cylindrical, straight, with a slightly swollen base 10–18 µm, branches mostly at right angles and with ...
www.bspp.org.uk