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\begin{document}

\title{Inheritance of potato processing traits in a half-diallel breeding population segregating for Columbia root-knot nematode resistance}



\author[1]{Max Feldman}%
\author[2]{Collins Wakholi}%
\author[2]{Devin Rippner}%
\author[3]{Mark J Pavek}%
\author[4]{Manoj Karkee}%
\affil[1]{USDA-ARS Temperate Tree Fruit and Vegetable Research Unit}%
\affil[2]{USDA-ARS Horticultural Crops Production and Genetic Improvement Research Unit}%
\affil[3]{Department of Horticulture, Washington State University}%
\affil[4]{Center for Precision Agriculture and Automated Agricultural Systems}%


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  \date{June 07, 2024}


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\begin{abstract}
The Columbia root-knot nematode (\emph{Meloidogyne chitwoodi}) is a
destructive soil borne pest that can cause serious economic damage to
potato tubers within infected, unfumigated fields. There are very few
known sources of genetic resistance to root-knot nematodes and no
released potato cultivars exhibit this trait. Literature indicates that
nematode resistance introgressed from Solanum bulbocastanum is
dominantly inherited across many genetic backgrounds. We generated a 32
family half-diallel progeny test population utilizing 3 root-knot
nematode resistant clones (female) and 11 clones (male) with russet skin
type (1,600 clones, between 25 -- 60 clones per family). In 2023, 1,200
progeny were evaluated relative to 6 control varieties planted at high
replication at the Washington State University Experiment Station in
Othello, WA. A scale, RGB-D imaging conveyor, and index scoring system
was used to record: total yield, the number of tubers per plant, tuber
size distribution, aspect ratio, skin color, starch content, and defect
severity from all samples within this population. The distribution of
phenotypic values observed from the progeny suggest that choice of
parent is a highly significant factor that influences almost all traits
evaluated. The phenotyping strategy utilized by our team is inexpensive,
expandable, and flexible enough to be adopted by many different types of
vegetable breeding programs. Data from this experiment is being used to
develop potato tuber defect classification models and assess the utility
of adopting genomic selection within our potato breeding program.%
\end{abstract}%



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