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{"id":3957,"date":"2020-12-02T14:39:00","date_gmt":"2020-12-02T20:39:00","guid":{"rendered":"https:\/\/hulkelab.org\/?p=3957"},"modified":"2023-07-26T15:47:20","modified_gmt":"2023-07-26T20:47:20","slug":"a-greenhouse-method-to-evaluate-sunflower-quantitative-resistance-to-basal-stalk-rot-caused-by-sclerotinia-sclerotiorum","status":"publish","type":"post","link":"https:\/\/hulkelab.org\/2020\/12\/02\/a-greenhouse-method-to-evaluate-sunflower-quantitative-resistance-to-basal-stalk-rot-caused-by-sclerotinia-sclerotiorum\/","title":{"rendered":"A Greenhouse Method to Evaluate Sunflower Quantitative Resistance to Basal Stalk Rot Caused by\u00a0Sclerotinia sclerotiorum<\/em>"},"content":{"rendered":"\n

Authors:<\/strong> William Underwood, Christopher G. Misar, Charles Block, Thomas J. Gulya, Zahirul Talukder, Brent S. Hulke, and Samuel G. Markell<\/p>\n\n\n\n

<\/div>\n\n\n\n

Publication Date:<\/strong> December 2, 2020<\/p>\n\n\n\n

<\/div>\n\n\n\n

Abstract: <\/strong>Resistance of sunflower to basal stalk rot (BSR) caused by the fungus Sclerotinia sclerotiorum<\/em> is quantitative, controlled by multiple genes contributing small effects. Consequently, artificial inoculation procedures allowing sufficient throughput and resolution of resistance are needed to identify highly resistant sunflower germplasm resources and to map loci contributing to resistance. The objective of this study was to develop a greenhouse-based method for evaluating sunflower quantitative resistance to BSR that would be simple, space- and time-efficient, high throughput, high resolution, and correlated with field observations. Experiments were conducted with 5-week-old sunflower plants and Sclerotinia<\/em>-infested millet seed as inoculum to assess the impact of pot size and temperature and to determine the most favorable inoculum rate and placement. Subsequently, an additional experiment was performed to assess the correlation of the greenhouse inoculation procedure with field results by using a panel of 32 sunflower genotypes with known field response to BSR previously determined in multiyear, multilocation artificially inoculated trials. Experimental observations indicated that the newly developed greenhouse inoculation procedure provided improved resolution to identify highly resistant genotypes and was strongly correlated with field observations. This method will be useful for screening of sunflower experimental and breeding materials, disease phenotyping of genetic mapping populations, and evaluation of resistance to different pathogen isolates.<\/p>\n\n\n\n

<\/div>\n\n\n\n

Click here<\/a><\/em><\/strong> to view the article.<\/p>\n","protected":false},"excerpt":{"rendered":"

Authors: William Underwood, Christopher G. Misar, Charles Block, Thomas J. Gulya, Zahirul Talukder, Brent S. Hulke, and Samuel G. Markell Publication Date: December 2, 2020 Abstract: Resistance of sunflower to basal stalk rot (BSR) caused by the fungus Sclerotinia sclerotiorum is quantitative, controlled by multiple genes contributing small effects. Consequently, artificial inoculation procedures allowing sufficient throughput and […]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ngg_post_thumbnail":0,"footnotes":""},"categories":[49,50],"tags":[],"class_list":["post-3957","post","type-post","status-publish","format-standard","hentry","category-pub","category-sunflower"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false},"uagb_author_info":{"display_name":"Madyson Sears","author_link":"https:\/\/hulkelab.org\/author\/mady-sears\/"},"uagb_comment_info":0,"uagb_excerpt":"Authors: William Underwood, Christopher G. Misar, Charles Block, Thomas J. Gulya, Zahirul Talukder, Brent S. Hulke, and Samuel G. Markell Publication Date: December 2, 2020 Abstract: Resistance of sunflower to basal stalk rot (BSR) caused by the fungus Sclerotinia sclerotiorum is quantitative, controlled by multiple genes contributing small effects. 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