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\begin{document}

\title{Digital quantification and characterization of root architectural diversity across collard landrace varieties}



\author[1]{Antonio Brazelton}%
\author[2]{Christopher Topp}%
\affil[1]{Washington University in St. Louis1}%
\affil[2]{Donald Danforth Plant Science Center}%


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  \date{May 24, 2024}


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\begin{abstract}
Urban agriculture has been broadly acknowledged for its potential to
reduce carbon emissions, increase food security, and improve economic
growth in some of the most vulnerable communities in the United States.
Collard (\emph{B.oleracea} var. \emph{viridis}) is a diploid leafy
green, grown on urban farms and community gardens across the country,
including the St. Louis Metro region. Beyond their nutritional
importance, collards provide urban and commercial agronomic systems with
a plethora of important ecosystem services. They scavenge nitrogen and
available resources, suppress weeds, and act as a biofumigant to control
soil-borne pests and pathogens. Recently, The Heirloom Collard Project
characterized the above-ground growth habits of 18 landrace collard
varieties across 250 organic gardens and farms. Little work has been
published to investigate collard root system architecture, which
influences both quality traits and ecosystem services that contribute to
sustainable crop production. The objectives of this research are to 1)
quantify root spatial and temporal diversity across 18 landrace collard
varieties, and 2) evaluate the relationship between root phenotype and
urban farmer crowd-sourced data for key traits such as germination rate,
disease resistance, vigor, yield, flavor, and winter hardiness. This
work will lead to the development of a participatory framework for urban
farmers and chefs to select varieties with improved root architecture
based on regional needs.%
\end{abstract}%



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