Association Mapping of Physiological and Morphological Traits Related to Crop Development under Contrasting Nitrogen Inputs in a Diverse Set of Potato Cultivars
Ample nitrogen (N) is required for potato production, but its use efficiency is low. N supply strongly interacts with maturity type of the cultivar grown. We assessed whether variation among 189 cultivars grown with 75 or 185 kg available N/ha in 2 years would allow detecting quantitative trait loci (QTLs) for relevant traits. Using phenotypic data, we estimated various traits and carried out a genome-wide association study (GWAS) with kinship correction. Twenty-four traits and 10,747 markers based on single-nucleotide polymorphisms from a 20K Infinium array for 169 cultivars were combined in the analysis. N level affected most traits and their interrelations and influenced the detection of marker-trait associations; some were N-dependent, others were detected at both N levels. Ninety percent of the latter accumulated on a hotspot on Chromosome 5. Chromosomes 2 and 4 also contained regions with multiple associations. After correcting for maturity, the number of QTLs detected was much lower, especially of those common to both N levels; however, interestingly, the region on Chromosome 2 accumulated several QTLs. There is scope for marker-assisted selection for maturity, with the main purpose of improving characteristics within a narrow range of maturity types, in order to break the strong links between maturity type and traits like N use efficiency.
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
2021 |
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Erschienen: |
2021 |
Enthalten in: |
Zur Gesamtaufnahme - volume:10 |
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Enthalten in: |
Plants (Basel, Switzerland) - 10(2021), 8 vom: 20. Aug. |
Sprache: |
Englisch |
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Beteiligte Personen: |
Ospina Nieto, Cesar A [VerfasserIn] |
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Links: |
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Themen: |
Canopy development |
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Anmerkungen: |
Date Revised 31.08.2021 published: Electronic Citation Status PubMed-not-MEDLINE |
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doi: |
10.3390/plants10081727 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM329945998 |
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520 | |a Ample nitrogen (N) is required for potato production, but its use efficiency is low. N supply strongly interacts with maturity type of the cultivar grown. We assessed whether variation among 189 cultivars grown with 75 or 185 kg available N/ha in 2 years would allow detecting quantitative trait loci (QTLs) for relevant traits. Using phenotypic data, we estimated various traits and carried out a genome-wide association study (GWAS) with kinship correction. Twenty-four traits and 10,747 markers based on single-nucleotide polymorphisms from a 20K Infinium array for 169 cultivars were combined in the analysis. N level affected most traits and their interrelations and influenced the detection of marker-trait associations; some were N-dependent, others were detected at both N levels. Ninety percent of the latter accumulated on a hotspot on Chromosome 5. Chromosomes 2 and 4 also contained regions with multiple associations. After correcting for maturity, the number of QTLs detected was much lower, especially of those common to both N levels; however, interestingly, the region on Chromosome 2 accumulated several QTLs. There is scope for marker-assisted selection for maturity, with the main purpose of improving characteristics within a narrow range of maturity types, in order to break the strong links between maturity type and traits like N use efficiency | ||
650 | 4 | |a Journal Article | |
650 | 4 | |a Solanum tuberosum | |
650 | 4 | |a canopy development | |
650 | 4 | |a genome-wide association study | |
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700 | 1 | |a Lammerts van Bueren, Edith T |e verfasserin |4 aut | |
700 | 1 | |a Allefs, Sjefke |e verfasserin |4 aut | |
700 | 1 | |a Vos, Peter G |e verfasserin |4 aut | |
700 | 1 | |a van der Linden, Gerard |e verfasserin |4 aut | |
700 | 1 | |a Maliepaard, Chris A |e verfasserin |4 aut | |
700 | 1 | |a Struik, Paul C |e verfasserin |4 aut | |
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