scholarly journals Nuclear Distribution in Vegetative Cells of Ophiobolus Graminis and other Cereal Root Pathogens

1970 ◽  
Vol 23 (4) ◽  
pp. 1105 ◽  
Author(s):  
SC Mills ◽  
TW Scott ◽  
GR Russell ◽  
RM Smith
Keyword(s):  
Rhizoctonia Solani ◽  
Vegetative Cells ◽  
Nuclear Distribution ◽  
Root Pathogens ◽  
Differential Character ◽  
Cereal Root

Difficulty is 'sometimes experienced in distinguishing between O. graminis and sterile fungi which form "Ophiobolus-like" runner hyphae on cereal roots. However, it is possible that nuclear distribution in mycelium may prove a differential character as different distributions have already been reported for O. graminis (Chambers and Flentje 1967) and a cereal root-attacking strain of Rhizoctonia solani (Flentje, Stretton, and Hawn 1963). This paper, therefore, describes comparisons of nuclear distribution in O. graminis and several other cereal root pathogens including a sterile fungus which formed Ophiobolus-like runner hyphae.

The effects of cereal cyst nematode (Heterodera avenae) and Rhizoctonia solani on the growth and yield of wheat

1978 ◽  
Vol 29 (6) ◽  
pp. 1127 ◽  
Author(s):  
JW Meagher ◽  
RH Brown ◽  
AD Rovira
Keyword(s):  
Rhizoctonia Solani ◽  
Field Trial ◽  
South Australia ◽  
Field Trials ◽  
Cyst Nematode ◽  
Soil Fumigation ◽  
Growth And Yield ◽  
Cereal Cyst Nematode ◽  
Heterodera Avenae ◽  
Root Pathogens

Field trials in a sandy mallee soil in Victoria have shown that large increases (up to 323%) in grain yield are obtained by soil fumigation or the application of nematicides. Development of the plants was enhanced by control of soil-borne root pathogens. The occurrence of both cereal cyst nematode (H. avenae) and Rhizoctonia solani in patches of poor wheat in a field trial in South Australia indicate a possible association between these two pathogens. Glasshouse studies showed that the effects of H. avenae and R. solani on wheat were greater when both pathogens were together than with each individually.

Some factors affecting the survival of the cereal root pathogen Ophiobolus graminis in wheat straw

1971 ◽  
Vol 11 (48) ◽  
pp. 90 ◽  
Author(s):  
SC Chambers
Keyword(s):  
Field Experiment ◽  
Rhizoctonia Solani ◽  
Wheat Straw ◽  
South African ◽  
Plant Species ◽  
Ammonium Sulphate ◽  
Soil Amendment ◽  
Root Pathogen ◽  
Factors Affecting ◽  
Cereal Root

The saprophytic survival of Ophiobolus graminis was studied under laboratory and field conditions using artificially-infected wheat-straw buried in a Victorian Mallee soil.In pot tests, survival was prolonged by applications of ammonium sulphate, unaffected by superphosphate dressings and reduced by growing oats over infected straw. The observed effect if the nitrogenous soil amendment was not dependent upon the presence of Rhizoctonia solani as reported for South African soils.In a field experiment, survival was reduced significantly more by growing various plant species over infected straws than by maintaining fallow conditions. O graminis was isolated from all species, including dicotyledons, sown over infected straw

Nuclear distribution of genotoxic damage in rainbow trout (Oncorhynchus mykiss) sperm after cryopreservation

2014 ◽  
Author(s):  
Silvia Gonzalez-Rojo ◽  
Cristina Fernandez-Diez ◽  
Marta Lombo ◽  
Vanesa Robles Rodriguez ◽  
Herraez Maria Paz
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Genotoxic Damage ◽  
Nuclear Distribution ◽  
Rainbow Trout Oncorhynchus Mykiss
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