Results 161 to 170 of about 1,718 (211)

Large sclerotia of Sclerotium cepivorum

Transactions of the British Mycological Society, 1988
Sclerotia of Sclerotium cepivorum much larger than typical infective sclerotia were common on naturally infected onions at Pukekohe, New Zealand, during one season but were rare in the next. They could not be recovered from soil one year after their most common occurrence. Similar large sclerotia were formed in culture on autoclaved wheat grains.
D. Backhouse, A. Stewart
openaire   +1 more source

Mycoparasitism of Sclerotia of Sclerotium Cepivorum.

Australasian Plant Pathology, 1989
Four fungal species were recorded in vitro as potential mycoparasites of sclerotia of Sclerotium cepivorum, the causal agent of onion white rot. Parasitised sclerotia appeared shrunken and decayed and failed to germinate. Light and scanning electron microscopy revealed colonisation of the internal structure of the sclerotium by the mycoparasites.
A Stewart, YA Harrison
openaire   +1 more source

Stimulation of Sclerotium Germination in Sclerotium cepivorum Berk.

Nature, 1957
EARLIER work by Scott1 demonstrated the inability of S. cepivorum, the cause of white rot disease of onions, to grow or survive, in soil, in the form of mycelium, and focused attention on the biology of its sclerotia, which are produced in large numbers on the base of infected plants.
J. R. COLEY-SMITH, C. J. HICKMAN
openaire   +1 more source

Susceptibility of cultivars of garlic to Sclerotium cepivorum

Plant Pathology, 1988
Five garlic cultivars, including one claimed to be resistant to Allium white rot, were similar in their effects on the germination of sclerotia of Sclerotium cepivorum. There was no evidence of resistance to the pathogen in any of the cultivars when ...
J. R. COLEY‐SMITH, A. R. ENTWISTLE
openaire   +1 more source

Apoplastic permeability of sclerotia of Sclerotium rolfsii, Sclerotium cepivorum and Rhizoctonia solani

New Phytologist, 1995
summaryIntact mature sclerotia of Sclerotium rolfsii sacc, and Sclerotium cepivorum Berk, produced in culture are impermeable to the apoplastic tracer sulphorhodamine G. Both of these species produce sclerotia with rinds. Some movement of sulphorhodamine into sclerotia of Rhizoctonia solani Kühn, which have no rind, occurred but the fluorochrome was ...
Nicola, Young, Anne E, Ashford
openaire   +2 more sources

Sclerotial morphogenesis in Sclerotium cepivorum in vitro

Canadian Journal of Botany, 1992
Sclerotial ontogeny, maturation, and aging in Sclerotium cepivorum are described using light and scanning electron microscopy. On potato dextrose agar, the mycelium spread, branching irregularly. Six days after inoculation sclerotial initials appeared, formed by hyphae branching and looping. From 6 to 8 days, the number and size of initials increased,
E. R. Littley, J. E. Rahe
openaire   +1 more source

Sclerotium cepivorum . [Descriptions of Fungi and Bacteria].

Descriptions of Fungi and Bacteria, 1976
Abstract A description is provided for Sclerotium cepivorum . Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On onion, chives, garlic, leek, shallot, Allium canadense, A. fistulosum, A.
null UK, CAB International, J. E. M. Mordue   +1 more
openaire   +1 more source

Effects of cultivation, conditioning and isolate on sclerotium germination in Sclerotium cepivorum

Plant Pathology, 1992
Sclerotium germination in various isolates of S. cepivorum was studied following different cultivation and conditioning treatments. A simple and rapid laboratory test was developed to trigger sclerotial germination under unsterile conditions. In most isolates, sclerotia produced under sterile
H. D. BRIX, V. ZINKERNAGEL
openaire   +1 more source

Sclerotium cepivorum . [Distribution map].

Distribution Maps of Plant Diseases, 2005
Abstract A new distribution map is provided for Sclerotium cepivorum Berk. Hosts: Onion, shallot, leek etc. ( Allium ). Information is given on the geographical distribution in Africa, Egypt, Libya, South Africa, Uganda, Zimbabwe, Asia, China, India, Uttar Pradesh, Delhi, Iran ...
openaire   +1 more source

Infection of Onion by the White Rot Pathogen, Sclerotium cepivorum

Journal of Phytopathology, 1989
AbstractInfection of onion tissue by Sclerotium cepivorum occurred from germ tubes penetrating between adjacent epidermal cell walls or directly, via penetration pegs produced from slightly swollen hyphal tips or from beneath dome shaped infection cushions.
A. Stewart, R. A. Fullerton, P. W. Sutherland   +2 more
openaire   +1 more source