ArticleBMC genetics2015
Tuber shape and eye depth variation in a diploid family of Andean potatoes.
Article in BMC genetics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed, 33 citations in OpenAlex.
- Identification and transcriptome analysis of a major locus for eye depth in tetraploid potato Jinshu 16.BMC plant biology · 2026Article
- Historical data provide new insights into inheritance of traits important for diploid potato breeding.Planta · 2025Article
- Genotyping-by-sequencing targets genic regions and improves resolution of genome-wide association studies in autotetraploid potato.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2024Article
- Insights into the genetic determination of tuber shape and eye depth in potato natural population based on autotetraploid potato genome.Frontiers in plant science · 2023Article
- Fine Mapping and Candidate Gene Prediction of Tuber Shape ControllingInternational journal of molecular sciences · 2022Article
- QTL analysis of tuber shape in a diploid potato population.Frontiers in plant science · 2022Article
- Genome-wide association study identifies various loci underlying agronomic and morphological traits in diversified potato panel.Physiology and molecular biology of plants : an international journal of functional plant biology · 2020Article
- Residual Heterozygosity and Epistatic Interactions Underlie the Complex Genetic Architecture of Yield in Diploid Potato.Genetics · 2019Article
- QTL for tuber morphology traits in diploid potato.Journal of applied genetics · 2018Article
- Genome Reduction in Tetraploid Potato Reveals Genetic Load, Haplotype Variation, and Loci Associated With Agronomic Traits.Frontiers in plant science · 2018Article
- Insight on Genes Affecting Tuber Development in Potato upon Potato spindle tuber viroid (PSTVd) Infection.PloS one · 2016Article
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Authors and funding
7 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundTuber appearance is highly variable in the Andean cultivated potato germplasm. The diploid backcross mapping population 'DMDD' derived from the recently sequenced genome 'DM' represents a sample of the allelic variation for tuber shape and eye depth present in the Andean landraces. Here we evaluate the utility of morphological descriptors for tuber shape for identification of genetic loci responsible for the shape and eye depth variation.
resultsSubjective morphological descriptors and objective tuber length and width measurements were used for assessment of variation in tuber shape and eye depth. Phenotypic data obtained from three trials and male-female based genetic maps were used for quantitative trait locus (QTL) identification. Seven morphological tuber shapes were identified within the population. A continuous distribution of phenotypes was found using the ratio of tuber length to tuber width and a QTL was identified in the paternal map on chromosome 10. Using toPt-437059, the marker at the peak of this QTL, the seven tuber shapes were classified into two groups: cylindrical and non-cylindrical. In the first group, shapes classified as 'compressed', 'round', 'oblong', and 'long-oblong' mainly carried a marker allele originating from the male parent. The tubers in this group had deeper eyes, for which a strong QTL was found at the same location on chromosome 10 of the paternal map. The non-cylindrical tubers classified as 'obovoid', 'elliptic', and 'elongated' were in the second group, mostly lacking the marker allele originating from the male parent. The main QTL for shape and eye depth were located in the same genomic region as the previously mapped dominant genes for round tuber shape and eye depth. A number of candidate genes underlying the significant QTL markers for tuber shape and eye depth were identified.
conclusionsUtilization of a molecular marker at the shape and eye depth QTL enabled the reclassification of the variation in general tuber shape to two main groups. Quantitative measurement of the length and width at different parts of the tuber is recommended to accompany the morphological descriptor classification to correctly capture the shape variation.
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