Inbreeding Effects on the Performance and Genomic Prediction for Polysomic Tetraploid Potato Offspring Grown at High Nordic Latitudes
Inbreeding depression (ID) is caused by increased homozygosity in the offspring after selfing. Although the self-compatible, highly heterozygous, tetrasomic polyploid potato (<i>Solanum tuberosum</i> L.) suffers from ID, some argue that the potential genetic gains from using inbred lines...
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MDPI AG
2023-06-01
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| Series: | Genes |
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| Online Access: | https://www.mdpi.com/2073-4425/14/6/1302 |
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| author | Rodomiro Ortiz Fredrik Reslow Ramesh Vetukuri M. Rosario García-Gil Paulino Pérez-Rodríguez José Crossa |
| author_facet | Rodomiro Ortiz Fredrik Reslow Ramesh Vetukuri M. Rosario García-Gil Paulino Pérez-Rodríguez José Crossa |
| author_sort | Rodomiro Ortiz |
| collection | DOAJ |
| description | Inbreeding depression (ID) is caused by increased homozygosity in the offspring after selfing. Although the self-compatible, highly heterozygous, tetrasomic polyploid potato (<i>Solanum tuberosum</i> L.) suffers from ID, some argue that the potential genetic gains from using inbred lines in a sexual propagation system of potato are too large to be ignored. The aim of this research was to assess the effects of inbreeding on potato offspring performance under a high latitude and the accuracy of the genomic prediction of breeding values (GEBVs) for further use in selection. Four inbred (S<sub>1</sub>) and two hybrid (F<sub>1</sub>) offspring and their parents (S<sub>0</sub>) were used in the experiment, with a field layout of an augmented design with the four S<sub>0</sub> replicated in nine incomplete blocks comprising 100, four-plant plots at Umeå (63°49′30″ N 20°15′50″ E), Sweden. S<sub>0</sub> was significantly (<i>p</i> < 0.01) better than both S<sub>1</sub> and F<sub>1</sub> offspring for tuber weight (total and according to five grading sizes), tuber shape and size uniformity, tuber eye depth and reducing sugars in the tuber flesh, while F<sub>1</sub> was significantly (<i>p</i> < 0.01) better than S<sub>1</sub> for all tuber weight and uniformity traits. Some F<sub>1</sub> hybrid offspring (15–19%) had better total tuber yield than the best-performing parent. The GEBV accuracy ranged from −0.3928 to 0.4436. Overall, tuber shape uniformity had the highest GEBV accuracy, while tuber weight traits exhibited the lowest accuracy. The F<sub>1</sub> full sib’s GEBV accuracy was higher, on average, than that of S<sub>1</sub>. Genomic prediction may facilitate eliminating undesired inbred or hybrid offspring for further use in the genetic betterment of potato. |
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| issn | 2073-4425 |
| language | English |
| last_indexed | 2024-03-11T02:25:44Z |
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| spelling | doaj.art-c27eacbb038b40fe9e1562f5fa5f4df22023-11-18T10:35:57ZengMDPI AGGenes2073-44252023-06-01146130210.3390/genes14061302Inbreeding Effects on the Performance and Genomic Prediction for Polysomic Tetraploid Potato Offspring Grown at High Nordic LatitudesRodomiro Ortiz0Fredrik Reslow1Ramesh Vetukuri2M. Rosario García-Gil3Paulino Pérez-Rodríguez4José Crossa5Department of Plant Breeding, Swedish University of Agricultural Sciences (SLU), SE 23436 Lomma, SwedenDepartment of Plant Breeding, Swedish University of Agricultural Sciences (SLU), SE 23436 Lomma, SwedenDepartment of Plant Breeding, Swedish University of Agricultural Sciences (SLU), SE 23436 Lomma, SwedenUmeå Plant Science Center, SLU Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences (SLU), SE 90183 Umeå, SwedenColegio de Postgraduados (COLPOS), Montecillos 56230, Edo. de México, MexicoColegio de Postgraduados (COLPOS), Montecillos 56230, Edo. de México, MexicoInbreeding depression (ID) is caused by increased homozygosity in the offspring after selfing. Although the self-compatible, highly heterozygous, tetrasomic polyploid potato (<i>Solanum tuberosum</i> L.) suffers from ID, some argue that the potential genetic gains from using inbred lines in a sexual propagation system of potato are too large to be ignored. The aim of this research was to assess the effects of inbreeding on potato offspring performance under a high latitude and the accuracy of the genomic prediction of breeding values (GEBVs) for further use in selection. Four inbred (S<sub>1</sub>) and two hybrid (F<sub>1</sub>) offspring and their parents (S<sub>0</sub>) were used in the experiment, with a field layout of an augmented design with the four S<sub>0</sub> replicated in nine incomplete blocks comprising 100, four-plant plots at Umeå (63°49′30″ N 20°15′50″ E), Sweden. S<sub>0</sub> was significantly (<i>p</i> < 0.01) better than both S<sub>1</sub> and F<sub>1</sub> offspring for tuber weight (total and according to five grading sizes), tuber shape and size uniformity, tuber eye depth and reducing sugars in the tuber flesh, while F<sub>1</sub> was significantly (<i>p</i> < 0.01) better than S<sub>1</sub> for all tuber weight and uniformity traits. Some F<sub>1</sub> hybrid offspring (15–19%) had better total tuber yield than the best-performing parent. The GEBV accuracy ranged from −0.3928 to 0.4436. Overall, tuber shape uniformity had the highest GEBV accuracy, while tuber weight traits exhibited the lowest accuracy. The F<sub>1</sub> full sib’s GEBV accuracy was higher, on average, than that of S<sub>1</sub>. Genomic prediction may facilitate eliminating undesired inbred or hybrid offspring for further use in the genetic betterment of potato.https://www.mdpi.com/2073-4425/14/6/1302<i>Solanum tuberosum</i> L.accuracyFennoscandiaGEBVgenetic gainsgermplasm enhancement |
| spellingShingle | Rodomiro Ortiz Fredrik Reslow Ramesh Vetukuri M. Rosario García-Gil Paulino Pérez-Rodríguez José Crossa Inbreeding Effects on the Performance and Genomic Prediction for Polysomic Tetraploid Potato Offspring Grown at High Nordic Latitudes Genes <i>Solanum tuberosum</i> L. accuracy Fennoscandia GEBV genetic gains germplasm enhancement |
| title | Inbreeding Effects on the Performance and Genomic Prediction for Polysomic Tetraploid Potato Offspring Grown at High Nordic Latitudes |
| title_full | Inbreeding Effects on the Performance and Genomic Prediction for Polysomic Tetraploid Potato Offspring Grown at High Nordic Latitudes |
| title_fullStr | Inbreeding Effects on the Performance and Genomic Prediction for Polysomic Tetraploid Potato Offspring Grown at High Nordic Latitudes |
| title_full_unstemmed | Inbreeding Effects on the Performance and Genomic Prediction for Polysomic Tetraploid Potato Offspring Grown at High Nordic Latitudes |
| title_short | Inbreeding Effects on the Performance and Genomic Prediction for Polysomic Tetraploid Potato Offspring Grown at High Nordic Latitudes |
| title_sort | inbreeding effects on the performance and genomic prediction for polysomic tetraploid potato offspring grown at high nordic latitudes |
| topic | <i>Solanum tuberosum</i> L. accuracy Fennoscandia GEBV genetic gains germplasm enhancement |
| url | https://www.mdpi.com/2073-4425/14/6/1302 |
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