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...
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MDPI AG
2021-08-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/10/8/1727 |
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| author | Cesar A. Ospina Nieto Edith T. Lammerts van Bueren Sjefke Allefs Peter G. Vos Gerard van der Linden Chris A. Maliepaard Paul C. Struik |
| author_facet | Cesar A. Ospina Nieto Edith T. Lammerts van Bueren Sjefke Allefs Peter G. Vos Gerard van der Linden Chris A. Maliepaard Paul C. Struik |
| author_sort | Cesar A. Ospina Nieto |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T08:27:14Z |
| format | Article |
| id | doaj.art-49a0fed6d153474fa5426b2cc7fc877b |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-10T08:27:14Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-49a0fed6d153474fa5426b2cc7fc877b2023-11-22T09:20:49ZengMDPI AGPlants2223-77472021-08-01108172710.3390/plants10081727Association Mapping of Physiological and Morphological Traits Related to Crop Development under Contrasting Nitrogen Inputs in a Diverse Set of Potato CultivarsCesar A. Ospina Nieto0Edith T. Lammerts van Bueren1Sjefke Allefs2Peter G. Vos3Gerard van der Linden4Chris A. Maliepaard5Paul C. Struik6Centre for Crop Systems Analysis, Wageningen University, P.O. Box 430, 6700 AK Wageningen, The NetherlandsWageningen UR Plant Breeding, P.O. Box 386, 6700 AJ Wageningen, The NetherlandsAgrico Research, Burchtweg 17, 8314 PP Bant, The NetherlandsWageningen UR Plant Breeding, P.O. Box 386, 6700 AJ Wageningen, The NetherlandsWageningen UR Plant Breeding, P.O. Box 386, 6700 AJ Wageningen, The NetherlandsWageningen UR Plant Breeding, P.O. Box 386, 6700 AJ Wageningen, The NetherlandsCentre for Crop Systems Analysis, Wageningen University, P.O. Box 430, 6700 AK Wageningen, The NetherlandsAmple 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.https://www.mdpi.com/2223-7747/10/8/1727canopy developmentgenome-wide association studymaturity typenitrogen use efficiency<i>Solanum tuberosum</i> |
| spellingShingle | Cesar A. Ospina Nieto Edith T. Lammerts van Bueren Sjefke Allefs Peter G. Vos Gerard van der Linden Chris A. Maliepaard Paul C. Struik Association Mapping of Physiological and Morphological Traits Related to Crop Development under Contrasting Nitrogen Inputs in a Diverse Set of Potato Cultivars Plants canopy development genome-wide association study maturity type nitrogen use efficiency <i>Solanum tuberosum</i> |
| title | Association Mapping of Physiological and Morphological Traits Related to Crop Development under Contrasting Nitrogen Inputs in a Diverse Set of Potato Cultivars |
| title_full | Association Mapping of Physiological and Morphological Traits Related to Crop Development under Contrasting Nitrogen Inputs in a Diverse Set of Potato Cultivars |
| title_fullStr | Association Mapping of Physiological and Morphological Traits Related to Crop Development under Contrasting Nitrogen Inputs in a Diverse Set of Potato Cultivars |
| title_full_unstemmed | Association Mapping of Physiological and Morphological Traits Related to Crop Development under Contrasting Nitrogen Inputs in a Diverse Set of Potato Cultivars |
| title_short | Association Mapping of Physiological and Morphological Traits Related to Crop Development under Contrasting Nitrogen Inputs in a Diverse Set of Potato Cultivars |
| title_sort | association mapping of physiological and morphological traits related to crop development under contrasting nitrogen inputs in a diverse set of potato cultivars |
| topic | canopy development genome-wide association study maturity type nitrogen use efficiency <i>Solanum tuberosum</i> |
| url | https://www.mdpi.com/2223-7747/10/8/1727 |
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