Fungicide sensitivity of populations of wheat powdery mildew (Erysiphe graminisf.sp.Tritici) in Central Europe in 1993

1995 ◽  
Vol 43 (1) ◽  
pp. 47-52 ◽  
Author(s):  
Miroslav Švec ◽  
Marta Miklovičová ◽  
Milan Sýkora ◽  
Eduard Krippel
Keyword(s):  
Powdery Mildew ◽  
Central Europe ◽  
Fungicide Sensitivity ◽  
Wheat Powdery Mildew

Studies on the control effect of Bacillus subtilis on wheat powdery mildew

2021 ◽  
Author(s):  
Deshan Xie ◽  
Xuewei Cai ◽  
Chunping Yang ◽  
Linjun Xie ◽  
Guangwei Qin ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Powdery Mildew ◽  
Control Effect ◽  
Wheat Powdery Mildew

scholarly journals Analysis of Anti-interference Ability of Hyperspectral Sensitive Features to Wheat Powdery Mildew

2021 ◽  
Vol 693 (1) ◽  
pp. 012124
Author(s):  
Jinling Zhao ◽  
Guomin Chu ◽  
Hao Yan ◽  
Lei Hu ◽  
Yongan Xue
Keyword(s):  
Powdery Mildew ◽  
Wheat Powdery Mildew

Changes in sterol composition with ontogeny of Blumeria graminis conidia

2000 ◽  
Vol 78 (10) ◽  
pp. 1288-1293 ◽  
Author(s):  
Jérôme Muchembled ◽  
Anissa Lounès-Hadj Sahraoui ◽  
Anne Grandmougin-Ferjani ◽  
Michel Sancholle
Keyword(s):  
Powdery Mildew ◽  
Plant Pathogen ◽  
Total Sterol ◽  
Sterol Composition ◽  
Blumeria Graminis ◽  
Erysiphe Graminis ◽  
Qualitative And Quantitative ◽  
Wheat Powdery Mildew

The total sterol composition of conidia of the obligate plant pathogen Blumeria (= Erysiphe) graminis f.sp. tritici has been analysed as a function of their ontogeny during sporulation. Two main classes of sterols were characterized: 24-ethylsterols (24-ethylcholesta-5,22-dienol, 24-ethylcholesterol, and Δ5-avenasterol) and 24-methylsterols (24-methylenecholesterol and episterol). Our results show that sterol composition is greatly modified during ontogeny of B. graminis conidia both at the qualitative and quantitative levels. In particular, 24-methylsterols, e.g., 24-methylenecholesterol and episterol, are the major sterols in old conidia whereas 24-ethylsterols, e.g., 24-ethylcholesta-5,22-dienol, 24-ethylcholesterol, and Δ5-avenasterol, are the main sterols in young conidia.Key words: Erysiphe, wheat powdery mildew, sterols, ontogeny.

Cytological and molecular analysis of nonhost resistance in rice to wheat powdery mildew and leaf rust pathogens

PROTOPLASMA ◽  
2014 ◽  
Vol 252 (4) ◽  
pp. 1167-1179 ◽  
Author(s):  
Yulin Cheng ◽  
Juanni Yao ◽  
Hongchang Zhang ◽  
Lili Huang ◽  
Zhensheng Kang
Keyword(s):  
Powdery Mildew ◽  
Leaf Rust ◽  
Molecular Analysis ◽  
Nonhost Resistance ◽  
Wheat Powdery Mildew ◽  
Rust Pathogens

Over-summering of wheat powdery mildew in Sichuan Province, China

2012 ◽  
Vol 34 ◽  
pp. 112-118 ◽  
Author(s):  
Na Liu ◽  
Guoshu Gong ◽  
Min Zhang ◽  
You Zhou ◽  
Zhixiang Chen ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Sichuan Province ◽  
Wheat Powdery Mildew

scholarly journals Evaluation of resistance to powdery mildew and identification of resistance genes in wheat cultivars

2020 ◽  
Author(s):  
Xian Xin Wu ◽  
Yue Gao ◽  
Qiang Bian ◽  
Qian Sun ◽  
Xin Yu Ni ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Resistance Genes ◽  
Large Scale ◽  
Durable Resistance ◽  
Cost Effective ◽  
Blumeria Graminis ◽  
Wheat Cultivars ◽  
Seedling Resistance ◽  
Initial Inoculum ◽  
Wheat Powdery Mildew

Abstract Background: Wheat powdery mildew, caused by the biotrophic fungus Blumeria graminis f. sp. tritici ( Bgt ), is a serious disease of wheat worldwide that can cause significant yield losses. Growing resistant cultivars is the most cost-effective and eco-soundly strategy to manage the disease. Therefore, a high breeding priority is to identify genes that can be readily used either singly or in combination for effective resistance to powdery mildew and alos in combination with genes for resistance to other diseases. Yunnan Province, with complex and diverse ecological environments and climates, is one of the main wheat growing regions in China. This region provides initial inoculum for starting epidemics of wheat powdery mildew in the region and other regions and thus, plays a key role in the regional and large-scale epidemics of the disease throughout China. The objectives of this study were to evaluate seedling resistance of 69 main wheat cultivars to powdery mildew and to determine the presence of resistance genes Pm3 , Pm8 , Pm13 , Pm16 , and Pm21 in these cultivars using gene specific DNA markers. Results: Evaluation of 69 wheat cultivars with six Bgt isolates showed that only four cultivars were resistant to all tested isolates, indicating that the overall level of powdery mildew resistance of Yunnan wheat cultivars is inadequate. The molecular marker results showed that 27 cultivars likely have at least one of these genes. Six cultivars were found likely to have Pm3 , 18 likely to have Pm8 , 5 likely to have Pm16 , and 3 likely to have Pm21 . No cultivar was found to carry Pm13 . Conclusion: The information on the presence of the Pm resistance genes in Yunnan wheat cultivars can be used in future wheat disease breeding programs. In particular, cultivars carrying Pm21 , which is effective against all Bgt races in China, should be pyramided with other effective genes to developing new cultivars with durable resistance to powdery mildew. Keywords: Blumeria graminis f. sp. tritici , Pm gene, molecular markers, wheat

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