Temat: Aphanomyces - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effect of K, Na, Mg and Ca ions content in sugar beet seed pericarp and peg treatment on the resistance of the seedlings to Aphanomyces cochlioides Drech.
Autorzy:: Laskowska, Dorota
Berbeć, Apoloniusz
Powiązania:: https://bibliotekanauki.pl/articles/2198834.pdf
Data publikacji:: 2001-06-21
Wydawca:: Instytut Hodowli i Aklimatyzacji Roślin
Tematy:: Aphanomyces cochlioides
black root rot
sugar beet
Opis:: In previous investigations it was observed that the high content of Mg in sugar beet seed pericarp increased the resistance of seedlings to A. cochlioides Drech. The experiments conducted in 1991 - 95 aimed at verification of this fact. Beet seed pricarp was enriched with mineral elements in field conditions using different fertlization of stecklings. In laboratory conditions seeds washed twice in water were soaked in salt solutions (MgSO4, Mg (NO3)2, KCl) or PEG 6000. Washing sugar beet seeds with water without any additional protection favours infection of the emerging seedlings with A. cochlioides. The mean results obtained from field experiments show that the lowest number of dead seedlings and significantly the highest number of survived ones were observed in the seeds washed and soaked in PEG. Similar results were found using KCl. The question still remains whether the protective effect is of a specific or osmotic character. The results confirmed a possibility of seedling protection in the above described way.
Źródło:: Plant Breeding and Seed Science; 2001, 45, 1; 65-75
1429-3862
2083-599X
Pojawia się w:: Plant Breeding and Seed Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Antifungal activity of sodium chloride on Saprolegnia diclina and Aphanomyces sp.
Autorzy:: Ali, E H
Powiązania:: https://bibliotekanauki.pl/articles/67745.pdf
Data publikacji:: 2009
Wydawca:: Polskie Towarzystwo Botaniczne
Tematy:: antifungal activity
sodium chloride
Saprolegnia diclina
Aphanomyces
zoosporic fungi
fungi
salinity
morphogenesis
biochemical activity
sporulation
Opis:: Sixteen identified and three unidentified species belonging to six genera of zoosporic fungi were isolated from forty water samples which were collected from different fish and fish hatcheries farms at Abbassa city, Sharkiya governorate, Egypt, using sesame seeds baiting technique at 20±2°C. Saprolegnia and Achlya contributed the broadest spectra of species diversity amongst the other genera of zoosporic fungi. Saprolegnia diclina and Aphanomyces sp. were the most prevalent species of zoosporic fungi. The abundance of zoosporic fungal species in these aquacultures was correlated with some physicochemical characteristics of the water samples. The two dominant species of zoosporic fungi were tested for their tolerance of NaCl solution and its impact on some morphological and metabolic activities of these fungi. Saprolegnia diclina tolerated concentrations of NaCl solution till 12000 μg/ml whereas the maximum resistance of Aphanomyces sp. was 8000 μg/ml. The examined morphological aspects of the two studied fungal species, which included the colony diameters, the vegetative hyphae, zoosporogenesis, zoospores discharge, sexual reproductive structures and gemmae formation, were generally affected depending upon the tested fungal species and the applied dose of NaCl solution. The low treatments of NaCl solution were significantly stimulative compared with the control for protease production by S. diclina but higher doses were significantly suppressive. A significant decline in protease activity at all applications was found when Aphanomyces sp. was treated with NaCl solution. The total free amino acids and total protein content of S. diclina and Aphanomyces sp. mycelia were almost significantly increased relative to untreated controls at the low dose of NaCl solution and they were significantly dropped at the higher concentrations by the two zoosporic fungi.
Źródło:: Acta Mycologica; 2009, 44, 1; 125-138
0001-625X
2353-074X
Pojawia się w:: Acta Mycologica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Występowanie sprawców zgorzeli siewek buraka na stanowiskach z uprawą buraka cukrowego
Occurrence of the root rot beet pathogens in sugar beet cultivation sites
Autorzy:: Skonieczek, Paweł
Nowakowski, Mirosław
Powiązania:: https://bibliotekanauki.pl/articles/2198471.pdf
Data publikacji:: 2013-03-31
Wydawca:: Instytut Hodowli i Aklimatyzacji Roślin
Tematy:: burak cukrowy
porażenie
występowanie Alternaria
Aphanomyces
Cladosporium Fusarium
Pythium
Rhizoctonia solani
Verticillium
infection
occurence of Alternaria
sugar beet
Opis:: Z plantacji buraka cukrowego na terenie województw: kujawsko-pomorskiego, pomorskiego i warmińsko-mazurskiego dostarczono w 2010 roku do IHAR — PIB w Bydgoszczy 11 prób porażonych korzeni buraka cukrowego i gleby celem zbadania występowania grzybów, w tym Rhizoctonia solani. W próbach gleby oceniono zawartość makroskładników pokarmowych, zasolenie i pH. Glebę umieszczono w kuwetach i wysiano w nich nasiona buraka cukrowego. Na porażonych młodych roślinach buraka stwierdzono obecność grzybów z rodzaju: Fusarium, Aphanomyces, Pythium, Rhizoctonia, Verticillium, Cladosporium i Alternaria. Rhizoctonia solani wykryto w glebie pochodzącej z miejscowości Minikowo i Sypniewo (woj. kujawsko-pomorskie) oraz Wandowo (woj. pomorskie). W wymienionych glebach wykazano następujące porażenie siewek buraka przez R. solani: 15,3% (średnio dla odmian buraka cukrowego: Janosik i Jenna) 7,9% (Janosik) i 15,7% (Janosik). Na preparatach z porażoną tkanką buraka obserwowano wielokrotnie jednoczesne występowanie wielu grzybów, wśród których dominowały rodzaje: Aphanomyces, Fusarium, Pythium, Verticillum i Rhizoctonia. Badania nadesłanych prób korzeni i gleby potwierdziły w 3 przypadkach obecność R. solani w glebie i na roślinie.
The IHAR — PIB in Bydgoszcz received in 2010 eleven samples of infected sugar beet roots and soil. The samples were taken from areas of the following provinces: Kujawy-Pomerania, Pomerania and Warmia-Masuria. The main purpose of the tests was to examine the occurrence of Rhizoctonia solani. The content of macronutrients, salinity and pH were evaluated in the samples of the soil. First, the soil was placed on trays and then sugar beet seeds were sown. The occurrence of various fungi genera, including Fusarium, Aphanomyces, Pythium, Rhizoctonia, Verticillium, Cladosporium and Alternaria was noted. R. solani was detected in the soil obtained from Minikowo and Sypniewo areas (Kujawy-Pomerania) and also from Wandowo area (Pomerania). After growth in the mentioned soils the following R. solani infection rates on the sugar beet seedlings were found: 15.3% (on average for Janosik and Jenna sugar beet cultivars), 7.9% (Janosik) and 15.7% (Janosik). Frequent observations and examinations of the microscopic specimen of infected sugar beet tissue showed simultaneous occurrence of many fungi, among which fungi such as genera Aphanomyces, Fusarium, Pythium, Verticillum and Rhizoctonia dominated. The studies of received roots and soils samples confirmed that in three cases R. solani was present in the soil as well as on the plant.
Źródło:: Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin; 2013, 267; 145-152
0373-7837
2657-8913
Pojawia się w:: Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
Dostawca treści:: Biblioteka Nauki