Abundant genomic variation exists among Norland and its sports
Date & Time
Monday, July 18, 2022, 3:45 PM

Red Norland is one of the most grown potato varieties in the US. It is a clonal mutant of Norland, a red skin, white-fleshed potato cultivar. Multiple color sports of Norland have been selected which include Red Norland and Dark Red Norland, they tend to have more uniform, darker, and red coloration. Even though these sports, have been utilized throughout the history of vegetatively propagated crops to increase agronomic value, the genetic components responsible for the phenotypic variation among clonal potato sports are not well documented. We set out to investigate the genomic changes, that may have occurred among Norland and its color sports. Sequencing data from the three clones were utilized to identify SNPs and copy number variation in relation to the potato reference genome. These variants were characterized across the genome and the potato R2R3-MYB gene family associated with the regulation of anthocyanin biosynthesis. Numerous SNPs and indels were identified across the 3 cultivars. Copy number variation was rampant across the genome as well as across the family of genes in each of the genotypes exhibiting more deletion than duplication. Collectively, these data suggest an extensive genomic variation exists among the related clones that have been selected over time.

Session Type
Parent Session
7/18 - Concurrent Sessions A