scholarly journals Reaction of winter wheat cultivars and breeding lines to Blumeria graminis f.sp. tritici

2010 ◽  
Vol 42 (No. 1) ◽  
pp. 15-20 ◽  
Author(s):  
L. Věchet
Keyword(s):  
Powdery Mildew ◽  
Winter Wheat ◽  
Disease Severity ◽  
Infection Type ◽  
Specific Gene ◽  
Powdery Mildew Fungus ◽  
Breeding Lines ◽  
Resistant Cultivars ◽  
Winter Wheat Cultivars ◽  
Small Plot

During 4 years, 27 cultivars and breeding lines of winter wheat (<i>Triticum aestivum</i>) were tested in small plot experiments for resistance to powdery mildew fungus. The most resistant were Frimegu, RE9607, Runal, Asset, Folke and Wasmo. The cultivars Asta (<i>Pm</i>2,6) and Vlasta (<i>Pm</i>2,6 and another not determined specific gene or minor genes of resistance) fall into resistant cultivars. It seems that the specific genes of resistance <i>Pm</i>2 and <i>Pm</i>6 are still very effective against the present Czech population of powdery mildew on wheat. Resistance of the cultivars Hereward and Tarso, having the gene of resistance <i>Pm</i>8, can be ascribed to an additional undetermined gene that is effective only in mature plants. The cultivars Mikon and Ramiro with partial resistance had a higher infection type and disease severity than resistant cultivars, but lower disease severity than the susceptible cultivar Kanzler.

scholarly journals Response of susceptible, partially resistant and resistant winter wheat cultivars to Blumeria graminis f.sp. tritici – short communication

2001 ◽  
Vol 37 (No. 4) ◽  
pp. 145-148
Author(s):  
L. Věchet
Keyword(s):  
Disease Severity ◽  
Partial Resistance ◽  
Short Communication ◽  
Infection Type ◽  
Weather Conditions ◽  
Resistant Cultivar ◽  
Growth Stages ◽  
Susceptible Cultivar ◽  
Winter Wheat Cultivars ◽  
Small Plot

Response of the susceptible cultivar Kanzler, the partially resistant cultivar Mikon and the resistant cultivar Asta (genes of resistance Pm2, Pm6) to powdery, were tested in two years small plot-experiments. Disease severity was influenced by weather conditions. There were highly significant differences in disease severity, infection type and number of diseased plants between the susceptible cultivar and the cultivars with partial resistance and specific resistance. Smaller differences were between the partially resistant cultivar and the resistant cultivar than between the cultivar with partial resistance and the susceptible cultivar. The most affected leaf was the third leaf from the top in all tested cultivars. Among these cultivars were differences in the highest development of disease in single growth stages.

scholarly journals Development of powdery mildew and leaf rust epidemics in winter wheat cultivars

2011 ◽  
Vol 49 (No. 10) ◽  
pp. 439-442
Author(s):  
L. Věchet
Keyword(s):  
Powdery Mildew ◽  
Winter Wheat ◽  
Leaf Rust ◽  
Disease Severity ◽  
Wheat Cultivars ◽  
Winter Wheat Cultivars

Development of powdery mildew and leaf rust epidemics was examined on three winter wheat cultivars with different predispositions to powdery mildew in three-year experiments. The progress of powdery mildew and leaf rust on the same cultivar was conditioned by its dissimilar susceptibility to the respective disease. Fit temperature played an important role at the beginning of the particular disease and during its progress. Significant differences in the disease severity of powdery mildew and leaf rust were recorded on single leaves. Disease severity of leaf rust was higher on upper leaves while disease severity of powdery mildew was higher on lower leaves.

scholarly journals Reaction of winter wheat cultivars to eyespot assessed visually and by real-time PCR

2019 ◽  
Vol 56 (No. 1) ◽  
pp. 9-14 ◽  
Author(s):  
Jana Palicová ◽  
Pavel Matušinsky ◽  
Alena Hanzalová ◽  
Ivana Svačinová ◽  
Veronika Dumalasová ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Real Time ◽  
Resistance Gene ◽  
Wheat Cultivars ◽  
Breeding Lines ◽  
Winter Wheat Cultivars ◽  
Small Plot ◽  
Low Levels ◽  
Oculimacula Yallundae ◽  
Pathogen Dna

The reaction of twelve winter wheat cultivars frequently grown in the Czech Republic and twenty-five new breeding lines to inoculation with Oculimacula yallundae and Oculimacula acuformis was evaluated in small plot trials from 2017–2018. The assessment was carried out visually by symptoms and by a quantitative real-time polymerase chain reaction (qPCR). The aims of the study were to compare the results of both methods, to evaluate the effect of the resistance gene Pch1 to eyespot, and to select new breeding lines resistant to eyespot. The relationship between the eyespot symptoms and the pathogen DNA content in plant tissues followed a moderate linear regression. Low levels of eyespot were observed in the cultivars/lines possessing the resistance gene Pch1 (Annie, Hermann, Rebell, SG-S1215-14, SG-S1825-14, SG-S791-13) and also in the line SG-SU630-15. The qPCR method was able to detect low levels of the pathogens in the plant tissue and to distinguish two eyespot pathogens. O. acuformis was detected in very low concentrations in the inoculated plants compared with O. yallundae. The eyespot infection rate was significantly higher in 2017 than in the next agricultural season due to extremely dry and warm spring weather in 2018.

scholarly journals Reaction of winter wheat genotypes to infection by Mycosphaerella graminicola(Fuckel) Schroeter

2013 ◽  
Vol 55 (1) ◽  
pp. 233-246
Author(s):  
Ewa Mirzwa-Mróz ◽  
Czesław Zamorski
Keyword(s):  
Winter Wheat ◽  
Broad Spectrum ◽  
Mycosphaerella Graminicola ◽  
Wheat Breeding ◽  
Septoria Tritici ◽  
Wheat Cultivars ◽  
Breeding Lines ◽  
Wheat Genotypes ◽  
Winter Wheat Cultivars

The response of Polish winter wheat genotypes to <i>M.graminicola</i> (preliminary experiments and cultivar collections) was observed in different regions of Poland. Observations were carried out in 1995-1999. The winter wheat genotypes showed a broad spectrum of reaction to this pathogen. Between 1997 and 1999 the highest degree of infection on winter wheat breeding lines was noted in Kończewice. During this time no genotypes free from infection were observed (preliminary breeding experiments). Cultivars with no symptoms of <i>Septoria tritici</i> blotch (Leszczyńska Wczesna and Żelazna) were found among old genotypes in Słupia Wielka only in earlier experiments (1995-1996). In the years 1997-1999 the winter wheat cultivars were classified into groups on the basis of their response to the pathogen. The degree of infection for the majority cultivars was quite high.

Detection of powdery mildew in two winter wheat cultivars using canopy hyperspectral reflectance

2013 ◽  
Vol 45 ◽  
pp. 124-131 ◽  
Author(s):  
Xueren Cao ◽  
Yong Luo ◽  
Yilin Zhou ◽  
Xiayu Duan ◽  
Dengfa Cheng
Keyword(s):  
Powdery Mildew ◽  
Winter Wheat ◽  
Wheat Cultivars ◽  
Hyperspectral Reflectance ◽  
Winter Wheat Cultivars

scholarly journals Role of hydrogen peroxide and Pharmaplant-turbo against cucumber powdery mildew fungus under organic and inorganic production

2008 ◽  
Vol 14 (3) ◽  
Author(s):  
Y. M. Hafez ◽  
Y. A. Bayoumi ◽  
Z. Pap ◽  
N. Kappel
Keyword(s):  
Hydrogen Peroxide ◽  
Powdery Mildew ◽  
Disease Severity ◽  
Ascorbic Acid Content ◽  
Plant Diseases ◽  
Organic Fertilizers ◽  
Nitrate Content ◽  
Antifungal Compound ◽  
Powdery Mildew Fungus ◽  
Cucumber Powdery Mildew

Cucumber leaves have been sprayed with a solution of hydrogen peroxide (H202) or Pharmaplant-turbo combined with organic or inorganic fertilizers under plasic house. Under the influence of H202, leaves exhibited resistant against Podoshaera fusca fungus, the causal agent of cucumber powdery mildew. H202 (15 mM) was able to decrease the disease severity from 90.4% to 12% in two experiments conducted in two seasons. Pharmaplant-turbo (Turbo) is new chemical compound and used as an antifungal compound. Turbo in 1 ml/L was able to decrease the disease severity from 90.4% to 11.5% in the both experiments as well. Both of H202 and Turbo were combined with organic treatment (compost + compost tea + seaweed extracts) which showed significant effect against cucumber powdery mildew fungus and strongly suppressed it as compared to control leaves. Organic treatment produced higher vegetative growth characters and greater early and total yields as compared to inorganic treatment, also organic fruits produced the lower nitrate content and the higher ascorbic acid content as compared to inorganic fruits. Our study have indicated that, H202 and Turbo combined with organic fertilizers play a role in the resistance of cucumber against powdery mildew by decreasing the disease severity. We suggest to give more attention to the direct application of H202 in low concentration and Turbo against powdery mildew diseases and other plant diseases.

Sign in / Sign up

Export Citation Format

Share Document