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  1. Article: Plant disease threats to food security in the Northern Great Plains of North America

    Byamukama, Emmanuel / Pérez‐Hernández, Oscar / Yabwalo, Dalitso Nobble

    Agronomy journal. 2021 Nov., v. 113, no. 6

    2021  

    Abstract: Plant disease epidemics are responsible for millions of tons of yield loss from crops annually. To provide sufficient nutritious food, feed, fiber, and fuel for a growing world human population on a non‐expanding land resource, yield loss caused by plant ...

    Abstract Plant disease epidemics are responsible for millions of tons of yield loss from crops annually. To provide sufficient nutritious food, feed, fiber, and fuel for a growing world human population on a non‐expanding land resource, yield loss caused by plant pathogens must be minimized. The Northern Great Plains (NGP) region of the United States is a major crop‐producing region, but crop production in this region is threatened by climate variability, new pathogen or pathogen race development, limited in‐field management practices, pathogen synergism, and fungicide resistance in some fungal pathogens. To sustain stable food, feed, fiber, and fuel production from plants, concerted efforts from all stakeholders must be harnessed to develop new varieties that are resistant to plant pathogens and less sensitive to climate variability, promote use of integrated disease management (that incorporates resistant/tolerant varieties, plant disease prediction, and accurate disease diagnosis and assessment), and enhance early detection capabilities of new pathogens/races. Here, we review the current and near‐future likely plant disease epidemic concerns in the NGP of the United States and propose some actions to prevent or lessen the extent of the next plant disease epidemic development.
    Keywords agronomy ; climate ; crop production ; disease control ; disease diagnosis ; food security ; fuel production ; fungi ; fungicide resistance ; human population ; land resources ; prediction ; stakeholders ; synergism ; Great Plains region
    Language English
    Dates of publication 2021-11
    Size p. 4473-4483.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 410332-4
    ISSN 1435-0645 ; 0002-1962
    ISSN (online) 1435-0645
    ISSN 0002-1962
    DOI 10.1002/agj2.20870
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

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  2. Article: Impact of grain morphology and the genotype by environment interactions on test weight of spring and winter wheat (Triticum aestivum L.)

    Yabwalo, Dalitso N / Daniel Brabec / Jonathan L. Kleinjan / Karl D. Glover / Thomas Pearson / William A. Berzonsky

    Euphytica. 2018 July, v. 214, no. 7

    2018  

    Abstract: Wheat (Triticum aestivum L.) market grades and prices are determined in part by test weight (TW). Millers value high TW because it is typically associated with higher flour extraction rates and better end-use quality. Test weight is expected to be ... ...

    Abstract Wheat (Triticum aestivum L.) market grades and prices are determined in part by test weight (TW). Millers value high TW because it is typically associated with higher flour extraction rates and better end-use quality. Test weight is expected to be influenced by other directly quantifiable grain attributes such as grain length (GL), grain width (GW), shape, single-grain-density (SGD), thousand-grain-weight (TGW), and packing efficiency (PE). The objectives of this study were to: (1) determine the primary morphological grain attributes that comprise TW measurements for winter and spring wheat classes; and (2) determine TW stability and genotype and genotype × environment interactions (GEIs) of the attributes that comprise TW. A market class representative group of 32 hard spring and 24 hard winter wheat cultivars was grown at several locations in South Dakota in 2011 and 2012. A regularized multiple regression algorithm was used to develop a TW model and determine what grain attribute reliably predicts TW. A GGE biplot was used for stability and GEI analyses whereas a linear mixed model was used for variance analyses. Data were collected on eight grain traits: TW, SGD, TGW, protein concentration, GW, GL, shape, size, and PE. Observations showed that in both spring and winter wheat, SGD accounted for over 90% of the phenotypic variation of TW. Cultivars with stable and high TW were identified in both wheat classes. Apart from TW; significant (p < 0.0001) genotype, environment, and GEI variances were observed for GW and SGD, a more direct measure of which could help improve genetic gain for TW.
    Keywords algorithms ; cultivars ; flour ; genetic improvement ; genotype ; genotype-environment interaction ; phenotypic variation ; plant breeding ; prices ; regression analysis ; spring ; spring wheat ; statistical models ; Triticum aestivum ; variance ; wheat classes ; winter ; winter wheat ; South Dakota
    Language English
    Dates of publication 2018-07
    Size p. 125.
    Publishing place Springer Netherlands
    Document type Article
    ZDB-ID 216568-5
    ISSN 1573-5060 ; 0014-2336
    ISSN (online) 1573-5060
    ISSN 0014-2336
    DOI 10.1007/s10681-018-2202-7
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 905: Show issues

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  3. Article ; Online: Variation in Isolate Virulence and Accession Resistance Associated with Diaporthe aspalathi, D. caulivora, and D. longicolla in Soybean

    Mohan, Karthika / Kontz, Brian / Okello, Paul / Allen, Tom W. / Bergstrom, Gary C. / Bissonnette, Kaitlyn / Bonkowski, John / Bradley, Carl A. / Buck, James / Chilvers, Martin I. / Dorrance, Anne / Giesler, Loren / Kelly, Heather / Koehler, Alyssa / Lopez-Nicora, Horacio D. / Mangel, Dylan / Markell, Samuel G. / Mueller, Daren / Price III, Paul P. /
    Rojas, Alejandro / Shires, Madalyn / Smith, Damon / Spurlock, Terry / Webster, Richard W. / Wise, Kiersten / Yabwalo, Dalitso / Mathew, Febina M.

    Plant Health Progress. 2023 Dec., v. 24, no. 4 p.482-487

    2023  

    Abstract: Important stem and grain diseases of soybean (Glycine max [L.] Merr.) caused by Diaporthe aspalathi, D. caulivora, and D. longicolla reduce yield in the United States. Sources of resistance to these pathogens have previously been reported; however, there ...

    Abstract Important stem and grain diseases of soybean (Glycine max [L.] Merr.) caused by Diaporthe aspalathi, D. caulivora, and D. longicolla reduce yield in the United States. Sources of resistance to these pathogens have previously been reported; however, there is limited information regarding their resistance when exposed to geographically distinct isolates of the same species. In this study, four accessions from the USDA Soybean Germplasm Collection with reported resistance to D. aspalathi, D. caulivora, or D. longicolla were evaluated using geographically representative isolates within each species from the United States. For each fungus, a greenhouse experiment was conducted as a completely randomized design with a factorial arrangement (isolate × accession). Plants were inoculated at the second to third trifoliate growth stage using toothpicks infested with isolates of each Diaporthe species. Pathogenicity was assessed 21 days postinoculation as 0 = no lesion, 0.5 = lesion length > 1 cm, and 1 = dead plant. A significant isolate-by-accession interaction (P < 0.05) was observed to affect pathogenicity as analyzed using nonparametric statistics (relative treatment effects [RTEs]), indicating that accessions responded differently to the isolates. Correlation analyses suggested that the RTEs on ‘Tracy-M’, ‘Dowling’, and ‘Crockett’ were weakly to moderately correlated with those of the D. aspalathi-susceptible ‘Bragg’, as well as for ‘PI567473B’ and ‘Century’ (D. caulivora), and ‘PI417507’ (D. longicolla), with the RTEs on ‘Hawkeye’ (P > 0.05) indicating possible genetic variation for resistance within these accessions. Our results provide information related to the resistance of previously identified accessions to develop commercial cultivars with resistance to important pathogens within the genus Diaporthe. Copyright © 2023 The Author(s). This is an open access article distributed under the CC BY 4.0 International license.
    Keywords Diaporthe ; Glycine max ; USDA ; cultivars ; developmental stages ; fungi ; genetic variation ; germplasm conservation ; greenhouse experimentation ; plant health ; soybeans ; statistics ; virulence ; pod and stem blight ; stem canker
    Language English
    Dates of publication 2023-12
    Size p. 482-487.
    Publishing place The American Phytopathological Society
    Document type Article ; Online
    ISSN 1535-1025
    DOI 10.1094/PHP-04-23-0041-RS
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: Further characterization of the scab resistance of ‘Frontana’ spring wheat and the relationships between resistance mechanisms

    Yabwalo, Dalitso N / Mergoum, Mohamed / Berzonsky, William A

    Plant breeding. 2011 Oct., v. 130, no. 5

    2011  

    Abstract: With 2 figures and 2 tables ABSTRACT: ‘Frontana’ spring wheat exhibits resistance to Fusarium head blight (FHB), but it is not clear which genes confer resistance to initial infection or spread. This study assessed the FHB resistance of reciprocal ... ...

    Abstract With 2 figures and 2 tables ABSTRACT: ‘Frontana’ spring wheat exhibits resistance to Fusarium head blight (FHB), but it is not clear which genes confer resistance to initial infection or spread. This study assessed the FHB resistance of reciprocal backcross monosomic (RBCM) lines previously developed using Frontana and ‘Chris’. Six RBCM lines differing for Frontana and Chris disomic chromosomes 3A, 6A and 4D were evaluated to determine which chromosome prevents disease establishment or spread after either spray or single floret inoculation (SFI). Data were collected for FHB incidence, severity and spread. The RBCM line with Frontana chromosome 3A expressed the lowest FHB severity and incidence after spray inoculation and the lowest disease spread after SFI. This confirms a major role of Frontana chromosome 3A in resistance to FHB establishment and spread. Frontana chromosomes 6A and 4D also influence resistance but have less of an impact compared with 3A. Significant correlations between disease incidence and severity and between severity and visually Fusarium damaged kernels (VFDK) suggest that type I and type II resistant mechanisms do not function independently in Frontana. Therefore, the metrics used to quantify resistance are interrelated.
    Keywords Fusarium ; Fusarium head blight ; backcrossing ; chromosomes ; disease incidence ; florets ; genes ; resistance mechanisms ; seeds ; spring wheat
    Language English
    Dates of publication 2011-10
    Size p. 521-525.
    Publishing place Blackwell Publishing Ltd
    Document type Article
    ZDB-ID 232853-7
    ISSN 0179-9541
    ISSN 0179-9541
    DOI 10.1111/j.1439-0523.2011.01883.x
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 426: Show issues

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  5. Article: Winter Wheat Grain Yield Response to Fungicide Application is Influenced by Cultivar and Rainfall.

    Byamukama, Emmanuel / Ali, Shaukat / Kleinjan, Jonathan / Yabwalo, Dalitso N / Graham, Christopher / Caffe-Treml, Melanie / Mueller, Nathan D / Rickertsen, John / Berzonsky, William A

    The plant pathology journal

    2019  Volume 35, Issue 1, Page(s) 63–70

    Abstract: Winter wheat is susceptible to several fungal pathogens throughout the growing season and foliar fungicide application is one of the strategies used in the management of fungal diseases in winter wheat. However, for fungicides to be profitable, weather ... ...

    Abstract Winter wheat is susceptible to several fungal pathogens throughout the growing season and foliar fungicide application is one of the strategies used in the management of fungal diseases in winter wheat. However, for fungicides to be profitable, weather conditions conducive to fungal disease development should be present. To determine if winter wheat yield response to fungicide application at the flowering growth stage (Feekes 10.5.1) was related to the growing season precipitation, grain yield from fungicide treated plots was compared to non-treated plots for 19 to 30 hard red winter wheat cultivars planted at 8 site years from 2011 through 2015. At all locations, Prothioconazole + Tebuconazole or Tebuconazole alone was applied at flowering timing for the fungicide treated plots. Grain yield response (difference between treated and non-treated) ranged from 66-696 kg/ha across years and locations. Grain yield response had a positive and significant linear relationship with cumulative rainfall in May through June for the mid and top grain yield ranked cultivars (R
    Language English
    Publishing date 2019-02-01
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2529195-6
    ISSN 2093-9280 ; 1598-2254 ; 0256-8608
    ISSN (online) 2093-9280
    ISSN 1598-2254 ; 0256-8608
    DOI 10.5423/PPJ.OA.04.2018.0056
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Further characterization of the scab resistance of ‘Frontana’ spring wheat and the relationships between resistance mechanisms

    Yabwalo, Dalitso N. / Mergoum, Mohamed / Berzonsky, William A.

    Plant breeding

    Volume v. 130,, Issue no. 5

    Abstract: With 2 figures and 2 tables ABSTRACT: ‘Frontana’ spring wheat exhibits resistance to Fusarium head blight (FHB), but it is not clear which genes confer resistance to initial infection or spread. This study assessed the FHB resistance of reciprocal ... ...

    Abstract With 2 figures and 2 tables ABSTRACT: ‘Frontana’ spring wheat exhibits resistance to Fusarium head blight (FHB), but it is not clear which genes confer resistance to initial infection or spread. This study assessed the FHB resistance of reciprocal backcross monosomic (RBCM) lines previously developed using Frontana and ‘Chris’. Six RBCM lines differing for Frontana and Chris disomic chromosomes 3A, 6A and 4D were evaluated to determine which chromosome prevents disease establishment or spread after either spray or single floret inoculation (SFI). Data were collected for FHB incidence, severity and spread. The RBCM line with Frontana chromosome 3A expressed the lowest FHB severity and incidence after spray inoculation and the lowest disease spread after SFI. This confirms a major role of Frontana chromosome 3A in resistance to FHB establishment and spread. Frontana chromosomes 6A and 4D also influence resistance but have less of an impact compared with 3A. Significant correlations between disease incidence and severity and between severity and visually Fusarium damaged kernels (VFDK) suggest that type I and type II resistant mechanisms do not function independently in Frontana. Therefore, the metrics used to quantify resistance are interrelated.
    Keywords chromosomes ; Fusarium ; spring wheat ; genes ; backcrossing ; florets ; seeds ; resistance mechanisms ; disease incidence ; Fusarium head blight
    Language English
    Document type Article
    ISSN 0179-9541
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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  7. Article: Further characterization of the scab resistance of ‘Frontana’ spring wheat and the relationships between resistance mechanisms

    Yabwalo, Dalitso N. / Mergoum, Mohamed / Berzonsky, William A.

    Plant breeding

    Volume v. 130,, Issue no. 5

    Abstract: With 2 figures and 2 tables ABSTRACT: ‘Frontana’ spring wheat exhibits resistance to Fusarium head blight (FHB), but it is not clear which genes confer resistance to initial infection or spread. This study assessed the FHB resistance of reciprocal ... ...

    Abstract With 2 figures and 2 tables ABSTRACT: ‘Frontana’ spring wheat exhibits resistance to Fusarium head blight (FHB), but it is not clear which genes confer resistance to initial infection or spread. This study assessed the FHB resistance of reciprocal backcross monosomic (RBCM) lines previously developed using Frontana and ‘Chris’. Six RBCM lines differing for Frontana and Chris disomic chromosomes 3A, 6A and 4D were evaluated to determine which chromosome prevents disease establishment or spread after either spray or single floret inoculation (SFI). Data were collected for FHB incidence, severity and spread. The RBCM line with Frontana chromosome 3A expressed the lowest FHB severity and incidence after spray inoculation and the lowest disease spread after SFI. This confirms a major role of Frontana chromosome 3A in resistance to FHB establishment and spread. Frontana chromosomes 6A and 4D also influence resistance but have less of an impact compared with 3A. Significant correlations between disease incidence and severity and between severity and visually Fusarium damaged kernels (VFDK) suggest that type I and type II resistant mechanisms do not function independently in Frontana. Therefore, the metrics used to quantify resistance are interrelated.
    Keywords chromosomes ; Fusarium ; spring wheat ; genes ; backcrossing ; florets ; seeds ; resistance mechanisms ; disease incidence ; Fusarium head blight
    Language English
    Document type Article
    ISSN 0179-9541
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

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