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1

Sclerotium rolfsii - nowy czy już znany patogen?

100%
Orlikowski L. B., Ptaszek M.
Hasło Ogrodnicze
|
2013
|
nr 07
2

Role of air and light in sclerotial development and basidiospore formation in Sclerotium rolfsii

100%
Maurya S., Singh U. P., Singh R., Singh A., Singh H. B.
Journal of Plant Protection Research
|
2010
|
tom 50
|
nr 2
206-209
Sclerotium rolfsii is one of the devastating soil-borne phytopathogens which causes severe loss at the time of seedling development. It also causes leaf spots in several crops and wild plants. Petri plates, containing potato dextrose agar medium, were inoculated with S. rolfsii. Two-third area of three, 50% area of three and 100% area of other three plates were sealed with cellophane tape. The other three plates were not sealed. All the plates were incubated at 27±2°C. Two sets of such plates were prepared. One set was incubated in light whereas the other set in the dark. There was no significant difference in mycelial growth and number of sclerotia among them but significant difference was observed when compared to the control, i.e. the plates which were not sealed. Sclerotium and basidiospore formation were directly influenced by air as completely sealed plates failed to produce sclerotia and basidiospores. Basidiospores were produced abundantly in the light and in the dark conditions in unsealed plates only on Cyperus rotundus rhizome meal agar medium.
3

Inhibitory effects of powdered caraway and peppermint extracts on pea root rot under greenhouse conditions

80%
El-Mougy N. S., Alhabeb R. S.
Journal of Plant Protection Research
|
2009
|
tom 49
|
nr 1
93-96
The effects of caraway and peppermint extracts was evaluated at concentrations of 2, 4, 6, 8 and 10%, respectively on the radial mycelial growth of Sclerotium rolfsii. High significant inhibitory effect on radial fungal growth was observed with different concentrations of each of plant extracts. Concentration of 6% and more of the two extracts in combination were able to cause complete growth inhibition of the tested fungus. In greenhouse, the efficacy of plant extracts in addition to the fungicide Rizolex-T as seed dressing on pea root rot incidence was evaluated in pot experiment using soil artificially infested with the disease agent. All treatments showed a significant reduction in disease incidence compared with the control treatment. Rizolex-T followed by combination of caraway and peppermint extracts as a mixture showed superior reduction effect on root rot disease incidence at pre-, and post-emergence growth stages than individual treatment with each of extracts. The usage of caraway and peppermint extracts for seed dressing before sowing might be applied as control measure for controlling root rot diseases.
4

Formulation and evaluation of agrochemicals of Sclerotium rolfsii FGCC # 02 against Parthenium hysteropharus

80%
Shukla R., Pandey A. K.
Journal of Plant Protection Research
|
2008
|
tom 48
|
nr 4
487-494
Herbicidal potential of CFCF (Cell free culture filtrate) of Sclerotium rolfsii against Parthenium hysterophorus was determined by shoot cut, seedling and detached leaf bioassays. Maximum phytotoxicity was obtained from 14 day's old fermented broth with sucrose + 0.5% Tween 20 as formulating agent. Significant reduction in chlorophyll and protein contents of host was also noticed.
5
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In vitro antifungal activity of three Saudi plant extracts against some phytopathogenic fungi

70%
Al-Askar A. A. A.
Journal of Plant Protection Research
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2012
|
tom 52
|
nr 4
The antifungal activities of ethanolic extracts of three Saudi plants; camel thorn (Alhagi maurorum Medic.), caper (Capparisspinosa L.), and pomegranate (Punica granatum L.) were investigated in vitro against Alternaria alternata, Fusarium oxysporum, Phomadestructiva, Rhizoctonia solani, and Sclerotium rolfsii at concentrations of 0, 3, 6, and 9% (v/v). All tested plant extracts; seeds, roots, and rinds had different degrees of antifungal activity against the tested fungi. When compared with the control, the highest antifungal activity was recorded for camel thorn seeds extract at a concentration of 9%, while, pomegranate rinds extract at 9% came in second. Camel thorn rinds extract came in last even when used at a high concentration. The ethanolic extract of camel thorn seeds may be recommended as a potent bio-fungicide. Extensive studies should be undertaken for the ethanolic extract of camel thorn seeds as a strong antifungal agent against fungal plant diseases.
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