Identification of Quantitative Trait Loci (QTL) Associated with Adaptive Traits in Northern Red Oak (Quercus rubra L.)

by

Christopher R. Heim, Mark V. Coggeshall, Arpita Konar, Jeanne Romero-Severson

Graduate Research Assistant (CH), Assistant Research Professor (MC), Department of Forestry, University of Missouri, Columbia, MO 65211 USA, Graduate Research Assistant (AK), Professor (JRS), Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556 USA, CH is corresponding author, to contact at crhq6b@mail.missouri.edu.

Abstract – We have established a northern red oak (Quercus rubra L.) full-sib clonal mapping population at the University of Missouri (MU) as part of a multi-year project sponsored by the NSF Plant Genome Research Program. New genomic resources derived from this project will help researchers identify candidate genes associated with abiotic stress tolerance. Additionally, tools developed by this project will enable comparative studies between this species and pedunculate oak (Q. robur L.), a species with a developed set of genomic resources. Colleagues at the University of Notre Dame are now in the final stages of generating the first genetic map for Q. rubra, which will facilitate identification of chromosome regions containing quantitative trait loci (QTL). Since 2014, phenotypic traits have been scored in the MU population for the purpose of locating QTL. To date, leaf phenology, stomatal pore index, leaf petiole ratio, leaf senescence and leaf marcescence appear best suited for QTL mapping. QTL mapping will begin once the genetic map and phenotype analysis are complete.