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    Wyświetlanie 1-4 z 4
    Tytuł:
    Screening results of diverse spring barley (Hordeum vulgare L.) varieties and breeding lines for resistance to Fusarium Head Blight.
    Autorzy:
    Usele, G.
    Legzdina, L.
    Beinarovica, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/2199627.pdf
    Data publikacji:
    2011-12-20
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    Fusarium culmorum
    Hordeum vulgare
    FHB resistance
    Opis:
    Fusarium head blight (FHB, scab) is a widespread disease of cereals, including barley (Hordeum vulgare L.), causing substantial yield and quality loss. Varieties with resistance is provide the greatest potential for reducing FHB. In the present study, we adapted cut-spike method for screening FHB severity among 126 spring barley genotypes. The collection consisted of Latvian varieties and perspective breeding lines and foreign varieties with specific quality traits important for food purposes and resistance to several diseases. Screening was repeated for two years, 2008 and 2009. Differences between genotypes in FHB resistance were observed. Two years data showed that genotype has a significant effect on FHB resistance (p<0.001) and genotype effect on resistance was 41.6%. Differences between FHB resistance of accessions of contrasting morphological traits and origin were tested. Only significant difference were found between cowered and hulless barley. There was no significant correlation between plant height and FHB severity and between flow- ering date and FHB severity, but significant positive correlation (r=0.672, p≤0.05) were found between days from snowing to maturity and FHB severity. Together 15 genotypes (all with Latvian origin) on this study showed average FHB severity lower than 10%.  
    Źródło:
    Plant Breeding and Seed Science; 2011, 64; 147-152
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetics of deoxynivalenol (DON) contamination caused by Fusarium head blight in hybrid rye.
    Autorzy:
    Miedaner, T.
    Wortmann, H.
    Geiger, H. H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2198905.pdf
    Data publikacji:
    2003-12-21
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    Fusarium culmorum
    hybrid breeding
    mycotoxins
    population parameters
    Secale cereale
    Opis:
    Head blight caused by Fusarium culmorum or F. graminearum affects all cereals including winter rye (Secale cereale L.). Besides yield and quality losses, grain is contaminated with the mycotoxin deoxynivalenol (DON) that is harmful to animals and humans. We analysed 76 self-fertile S2 lines and their corresponding testcrosses for head blight resistance and DON concentration in the grain by inoculating them with an aggressive isolate of F. culmorum at two locations in Southwestern Germany in 2000. Disease severity at both locations was low with mean ratings from 2.7 to 3.4 on a 1-9 scale (1=healthy), but still DON occurred in considerable amounts (11.4 - 15.0 mg kg-1). Genotypic variance was significant (P=0.01) in all instances, genotype-location interaction and error variances were more important for DON concentration resulting in a lower heritability of this trait. No association between S2 lines and their testcrosses was found for head blight rating or DON concentration (r = 0.33 and 0.19, respectively). The coefficient of correlation between head blight rating and DON concentration was low for the S2 lines and medium for the testcrosses (r=0.24 and 0.60, P=0.05 and P=0.01, resp.). The hybrid rye breeder should select predominantly on testcross performance. Selection for low head blight ratings should result in lower DON concentrations in the grain also. In later generations, DON should be analysed additionally to exploit the maximum selection gain possible.
    Źródło:
    Plant Breeding and Seed Science; 2003, 48; 69-78
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fusarium DNA levels as compared to mycotoxin levels in Finnish and Estonian grain samples.
    Autorzy:
    Yli-Mattila, T.
    Rämö, S.
    Tanner, R.
    Loiveke, H.
    Hietaniemi, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2199625.pdf
    Data publikacji:
    2011-12-20
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    DON
    Fusarium. culmorum
    F. graminearum
    TaqMan qPCR
    T-2/HT-2
    Opis:
    In the present work Fusarium DNA levels of deoxynivalenol (DON)-producing F. graminearum and F. culmorum and T-2/HT-2-producing F. langsethiae and F. sporotrichioides were compared to DON and T-2/HT-2 levels in Finnish (19 oat samples) and Estonian (3 oat, 8 wheat and 9 barley) grain samples of the year 2008. The Finnish oat samples were selected based on high (<870 ppb) DON levels. Some of them also contained high levels of zearalenone (ZEN). The main aim was to find out, which Fusarium species is the main DON producer in oats in Finland. In Estonian grain sam- ples all mycotoxin levels were relatively low and below the EU limits. The highest ZEN levels were found in oat in Satakunta in Finland. This is the first study, in which F. graminearum has been found in Estonian grains. The correlation between F. graminearum DNA and DON levels in the combined Finnish and Estonian oat samples was higly significant (R2 = 0.88). In Finnish samples a significant correlation was also found between F. graminearum DNA and ZEN levels (R2 = 0.42). No correlation was found between F. culmorum DNA and DON levels in the combined Finnish and Estonian oat sam- ples. There was also a significant correlation between the combined T-2 and HT-2 and combined F. langsethiae and F. sporotrichioides levels (R2  = 0.38) in the combined Finnish and Estonian oat samples. According to our results F. graminearum is clearly the main DON producer in Finnish oat.
    Źródło:
    Plant Breeding and Seed Science; 2011, 64; 131-140
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phenotypic and Marker Assisted Evaluation for Pathogenicity and Aggressiveness of Romanian Fusarium Isolates Vs. Wheat
    Autorzy:
    Ittu, M.
    Cana, L.
    Ciuca, M.
    Voaides, C.
    Cornea, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2199565.pdf
    Data publikacji:
    2011-06-21
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    aggressiveness
    Fusarium graminearum
    F. culmorum
    molecular polymorphism
    TRI 5 gene
    Opis:
    Pathogenicity and aggressiveness vs. wheat of 30 new Fusarium accessions, primarily F. graminearum, obtained  from random naturally infected grain samples of bread wheat, durum wheat and triticale collected across Romania,  phenotypically and by molecular tools has been investigated. A large variation of this trait, expressed as reduction of  coleoptiles length (% of control), in seedling stage, on average over three varieties, ranging from 2.1 to 30.9 % was  registered. Point field inoculations at anthesis of 90 Fusarium isolate x wheat varieties combinations, revealed also  the variability of several components of aggressiveness: severity (14.4-64.8%), AUDPC (104.9-527.1), and FDK 8.1-43.7%, respectively.Molecular techniques allowed identification of Fusarium species and the analysis of polymorphism within fungal  isolates. Moreover, the presence of TRI 5 gene involved in DON biosynthesis was detected in the majority of isolates.Similarity between records obtained in seedling and adult stage for the most aggressive of Fusarium isolates,  suggests that phenotypic selection in conjunction with molecular tools could be a reliable method to select the appropriate pathogen strains for breeding of resistance.
    Źródło:
    Plant Breeding and Seed Science; 2011, 63; 77-86
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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