Pod and Seed Trait QTL Identification To Assist Breeding for Peanut Market Preferences
Open Access
- 1 July 2020
- journal article
- research article
- Published by Oxford University Press (OUP) in G3 Genes|Genomes|Genetics
- Vol. 10 (7), 2297-2315
- https://doi.org/10.1534/g3.120.401147
Abstract
Although seed and pod traits are important for peanut breeding, little is known about the inheritance of these traits. A recombinant inbred line (RIL) population of 156 lines from a cross of Tifrunner x NC 3033 was genotyped with the Axiom_Arachis1 SNP array and SSRs to generate a genetic map composed of 1524 markers in 29 linkage groups (LG). The genetic positions of markers were compared with their physical positions on the peanut genome to confirm the validity of the linkage map and explore the distribution of recombination and potential chromosomal rearrangements. This YE traits that were phenotyped over three consecutive years for the purpose of developing trait-associated markers for breeding. Forty-nine QTL were identified in 14 LG for seed size index, kernel percentage, seed weight, pod weight, single-kernel, double-kernel, pod area and pod density. Twenty QTL demonstrated phenotypic variance explained (PVE) greater than 10% and eight more than 20%. Of note, seven of the eight major QTL for pod area, pod weight and seed weight (PVE >20% variance) were attributed to NC 3033 and located in a single linkage group, LG B06_1. In contrast, the most consistent QTL for kernel percentage were located on A07/B07 and derived from Tifrunner.This publication has 86 references indexed in Scilit:
- Integrated Consensus Map of Cultivated Peanut and Wild Relatives Reveals Structures of the A and B Genomes of Arachis and Divergence of the Legume GenomesDNA Research, 2013
- Comparative mapping in intraspecific populations uncovers a high degree of macrosynteny between A- and B-genome diploid species of peanutBMC Genomics, 2012
- A high-density genetic map of Arachis duranensis, a diploid ancestor of cultivated peanutBMC Genomics, 2012
- Fostered and left behind alleles in peanut: interspecific QTL mapping reveals footprints of domestication and useful natural variation for breedingBMC Plant Biology, 2012
- Impact of Molecular Genetic Research on Peanut Cultivar DevelopmentAgronomy, 2011
- Large-Scale Data Integration Reveals Colocalization of Gene Functional Groups with Meta-QTL for Multiple Disease Resistance in BarleyMolecular Plant-Microbe Interactions®, 2011
- Large-scale development of expressed sequence tag-derived simple sequence repeat markers and diversity analysis in Arachis spp.Molecular Breeding, 2011
- Identification of several small main-effect QTLs and a large number of epistatic QTLs for drought tolerance related traits in groundnut (Arachis hypogaea L.)Theoretical and Applied Genetics, 2010
- Do genetic recombination and gene density shape the pattern of DNA elimination in rice long terminal repeat retrotransposons?Genome Research, 2009
- Development and Seed Number in Indeterminate Soybean as Affected by Timing and Duration of Exposure to Long Photoperiods after FloweringAnnals of Botany, 2007