Determination of Imidacloprid and Tetraconazol Residues in Cucumber Plants after whitefly and powdery mildew control

2014 ◽  
Vol 1 (2) ◽  
pp. 1-14
Author(s):  
Mostafa Abbassy ◽  
◽  
Mamdouh Marzouk ◽  
Hoda Nasr ◽  
Awatef . Mansy
Keyword(s):  
Powdery Mildew

scholarly journals Molecular identification and chromosomal localization of new powdery mildew resistance gene Pm11 in oat

2019 ◽  
Vol 133 (1) ◽  
pp. 179-185
Author(s):  
Tomasz Ociepa ◽  
Sylwia Okoń ◽  
Aleksandra Nucia ◽  
Justyna Leśniowska-Nowak ◽  
Edyta Paczos-Grzęda ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Resistance Gene ◽  
Powdery Mildew Resistance ◽  
Chromosomal Localization ◽  
Powdery Mildew Resistance Gene ◽  
Consensus Map ◽  
Avena Sterilis ◽  
Subsequent Conversion ◽  
Selection Of

Abstract The appropriate selection of various traits in valuable plants is very important for modern plant breeding. Effective resistance to fungal diseases, such as powdery mildew, is an example of such a trait in oats. Marker-assisted selection is an important tool that reduces the time and cost of selection. The aims of the present study were the identification of dominant DArTseq markers associated with a new resistance gene, annotated as Pm11 and derived from Avena sterilis genotype CN113536, and the subsequent conversion of these markers into a PCR-based assay. Among the obtained 30,620 silicoDArT markers, 202 markers were highly associated with resistance in the analysed population. Of these, 71 were selected for potential conversion: 42 specific to resistant and 29 to susceptible individuals. Finally, 40 silicoDArT markers were suitable for primer design. From this pool, five markers, 3 for resistant and 2 for susceptible plants, were selected for product amplification in the expected groups. The developed method, based on 2 selection markers, provides certain identification of resistant and susceptible homozygotes. Also, the use of these markers allowed the determination of heterozygotes in the analysed population. Selected silicoDArT markers were also used for chromosomal localization of new resistance genes. Five out of 71 segregating silicoDArT markers for the Pm11 gene were found on the available consensus genetic map of oat. Five markers were placed on linkage groups corresponding to Mrg12 on the Avena sativa consensus map.

First Report of Powdery Mildew Caused by Leveillula taurica of Field-Grown Sweet Pepper in the Pacific Northwest

2010 ◽  
Vol 11 (1) ◽  
pp. 45 ◽  
Author(s):  
Dean A. Glawe ◽  
Tess Barlow ◽  
Jordan E. Eggers ◽  
Philip B. Hamm
Keyword(s):  
Powdery Mildew ◽  
Economic Impact ◽  
Pacific Northwest ◽  
Sweet Pepper ◽  
Disease Outbreak ◽  
First Report ◽  
Leveillula Taurica ◽  
The Pacific

In August 2009, a grower reported a disease affecting nearly all plants in a drip-irrigated field of sweet pepper cv. Excalibur in Umatilla Co., OR. The fungus was determined to be Leveillula taurica (Lév.) G. Arnaud, previously unreported from this host in Oregon or from field-grown peppers in the Pacific Northwest. This report documents the taxonomic determination of this species and provides information about the disease outbreak, including economic impact. Accepted for publication 18 May 2010. Published 8 July 2010.

scholarly journals Yield Loss Assessment and Determination of Control Thresholds for Powdery Mildew of Eggplant (Solanum melongena)

2016 ◽  
Vol 20 (2) ◽  
pp. 145-151 ◽  
Author(s):  
Ju-Hee Kim ◽  
Ki-Kwon Lee ◽  
Ju-Rak Yim ◽  
Ju Kim ◽  
In-Young Choi ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Yield Loss ◽  
Solanum Melongena ◽  
Loss Assessment ◽  
Yield Loss Assessment

scholarly journals Yield Loss Assessment and Determination of Control Thresholds for Powdery Mildew of Chili pepper (Capsicum annuum L)

2015 ◽  
Vol 19 (2) ◽  
pp. 113-118 ◽  
Author(s):  
Ju-Hee Kim ◽  
Seong-Soo Cheong ◽  
Ki-Kwon Lee ◽  
Ju-Rak Yim ◽  
Hong-Sik Shim ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Capsicum Annuum ◽  
Yield Loss ◽  
Chili Pepper ◽  
Loss Assessment ◽  
Capsicum Annuum L ◽  
Yield Loss Assessment

scholarly journals Determination of downy and powdery mildew resistance of some Vitis spp.

2019 ◽  
Vol 34 (1) ◽  
pp. 15-24
Author(s):  
Zeynep Yıldırım ◽  
Arif Atak ◽  
Murat Akkurt
Keyword(s):  
Powdery Mildew ◽  
Powdery Mildew Resistance ◽  
Annual Rainfall ◽  
The Black Sea ◽  
Vitis Labrusca ◽  
Black Sea Region ◽  
Sequence Characterized Amplified Region ◽  
Simple Sequence ◽  
Vitis Spp

The Black Sea region of Turkey receives an annual rainfall of 2000-2500 mm and viticulture in the region depends on the rainfall limits significantly. In this study, the resistance of eighty different Vitis species and cultivars/genotypes to downy and powdery mildew was assessed using Marker Assisted Selection coupled with inoculation observations. Six Simple Sequence Repeats (SSR) and one Sequence Characterized Amplified Region (SCAR) markers were developed for different resistance loci (Run1, Rpv1, Ren1, Rpv3, Ren3) from different Vitis genetic resources. Eight of the cultivars/genotypes were characterised as resistant to downy mildew, seven were resistant to powdery mildew, and four were resistant to both diseases. These results, taken together with the disease inoculation observations, revealed ‘Köfteci Üzümü’ (Vitis labrusca) and ‘Giresun 3’ (Vitis labrusca) were the most resistant cultivars/genotypes.

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