Plants of wild species
Sinapis arvensis L
. — (wild mustard) with severe mosaic symptoms were established all around different farm crops in Sofia valley and even in the Sofia suburbs in 2006. Two viruses were identified by ELISA method (DAS-ELISA) and by the indicator method. Those were the virus of the genus
Cauliflower mosaic virus
(CaMV) and a virus of the genus
Potyviridae — Turnip mosaic virus
(TuMV). Both viruses were found in wild mustard plants, often in mixed infection.
Turnip yellow mosaic virus
(TYMV) wasn’t determined in wild mustard plants. CaMV was identified by the infection of its diagnostic indicator species
var. botrytis (cv. Snowball) — cauliflower. Besides cauliflower, TuMV was also identified in cabbage —
var. capitata, cv. Balkan,
Chenopodium amaranticolor, Chenopodium quinoa
and tobacco plants —
, cv. Samsun. The economically important crop oilseed rape
Brassica narus var. oleifera
, hybrid Elvis, was infected by artificial mechanic inoculation with material from diseased wild mustard. Oilseed rape plants responded with local and systemic chlorotic mottling of the leaves. A clearly pronounced mosaic appeared on leaf petioles of the growth. Our hypothesis was that the weed
could be a reservoir of TuMV and CaMV infection for oilseed rape under natural conditions, if the viruses are transferred from wild mustard to oilseed rape with aphids.
Authors:Andrzej Skoczowski, Anna Janeczko, Gábor Gullner, István Tóbias, Andrzej Kornas and Balázs Barna
effect of an incompatible wild type of, a hypersensitive response (HR) mutant of and saprophytic Pseudomonas bacteria on membrane permeability, PSII efficiency and metabolic activity of oilseedrape cotyledons with and without brassinosteroid pre
Numerous different agroecosystems (alfalfa, apple, cereals, oilseed rape, maize, sunflower fields and plantations, a pasture and a compost hill) were investigated on the basis of the soil dwelling mites in two parts of Hungary. Twenty-three species of Mesostigmata, 13 Oribatida, one Astigmata and one Prostigmata are listed from these specific ecosystems, of which nine species, Alliphis halleri (G. and R. Canestrini, 1881); Antennoseius avius Karg, 1976; Antennoseius pannonicus Willmann, 1951; Arctoseius eremitus (Berlese, 1918); Cheiroseius bryophilus Karg, 1969; Leioseius insignis (Hirschmann, 1963); Oppiella loksai (Schalk, 1966); Punctodendrolaelaps fimetarius (Karg, 1965); Rhodacarellus perspicuus Halaśkova, 1958 are new to the Hungarian fauna.