Mapping Solanum berthaultii-based late blight (Phytophthora infestans) resistance in a diploid population
Late blight, caused by the oomycete Phytophthora infestans (Mont) de Bary, is the most important disease of cultivated potato (Solanum tuberosum L.). An efficient long-term strategy for controlling late blight infection involves integration of host plant resistance to disease management programs. In...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Springer
2020
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| Online Access: | https://hdl.handle.net/10568/110238 |
| _version_ | 1855522376063647744 |
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| author | Manrique, N. Islam, M. Enciso-Rodriguez, F. Rosenzweig, N. Coombs, J. Douches, D. |
| author_browse | Coombs, J. Douches, D. Enciso-Rodriguez, F. Islam, M. Manrique, N. Rosenzweig, N. |
| author_facet | Manrique, N. Islam, M. Enciso-Rodriguez, F. Rosenzweig, N. Coombs, J. Douches, D. |
| author_sort | Manrique, N. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Late blight, caused by the oomycete Phytophthora infestans (Mont) de Bary, is the most important disease of cultivated potato (Solanum tuberosum L.). An efficient long-term strategy for controlling late blight infection involves integration of host plant resistance to disease management programs. In this study, a diploid potato population segregating for late blight resistance was generated from an interspecific cross (MSX902) between S. tuberosum x S. chacoense hybrid (84SD22) and a late blight resistant Solanum berthaultii hybrid (Ber83). A total of 129 progeny and two parents were tested for foliar resistance against the US-23 P. infestans genotype using detached-leaf bioassays and inoculated field trials (2014 and 2015). Distribution of foliar late blight resistance and susceptibility was bimodal in both types of phenotype evaluation, suggesting a major R-gene may be associated with the resistance. A major QTL for late blight resistance on chromosome 10 was detected using both detached leaf bioassay and field trial data. The SNP marker solcap_snp_c1_15219 (26.5 cM) was at the peak of the QTL. Additionally, a minor QTL on chromosomes 5 was linked to SNPs solcap_snp_c1_3793. These SNP markers closely linked to the late blight resistance QTL can be used for marker-assisted breeding. |
| format | Journal Article |
| id | CGSpace110238 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace1102382025-11-29T05:22:14Z Mapping Solanum berthaultii-based late blight (Phytophthora infestans) resistance in a diploid population Manrique, N. Islam, M. Enciso-Rodriguez, F. Rosenzweig, N. Coombs, J. Douches, D. potatoes phytophthora infestans diploidy Late blight, caused by the oomycete Phytophthora infestans (Mont) de Bary, is the most important disease of cultivated potato (Solanum tuberosum L.). An efficient long-term strategy for controlling late blight infection involves integration of host plant resistance to disease management programs. In this study, a diploid potato population segregating for late blight resistance was generated from an interspecific cross (MSX902) between S. tuberosum x S. chacoense hybrid (84SD22) and a late blight resistant Solanum berthaultii hybrid (Ber83). A total of 129 progeny and two parents were tested for foliar resistance against the US-23 P. infestans genotype using detached-leaf bioassays and inoculated field trials (2014 and 2015). Distribution of foliar late blight resistance and susceptibility was bimodal in both types of phenotype evaluation, suggesting a major R-gene may be associated with the resistance. A major QTL for late blight resistance on chromosome 10 was detected using both detached leaf bioassay and field trial data. The SNP marker solcap_snp_c1_15219 (26.5 cM) was at the peak of the QTL. Additionally, a minor QTL on chromosomes 5 was linked to SNPs solcap_snp_c1_3793. These SNP markers closely linked to the late blight resistance QTL can be used for marker-assisted breeding. 2020-12 2020-11-19T12:35:31Z 2020-11-19T12:35:31Z Journal Article https://hdl.handle.net/10568/110238 en Limited Access Springer Manrique, N., Islam, M., Enciso-Rodriguez, F., Rosenzweig, N., Coombs, J., Douches, D. (2020). Mapping Solanum berthaultii-based late blight (Phytophthora infestans) resistance in a diploid population. American Journal of Potato Research. ISSN 1099-209X. Published online 09Nov2020 |
| spellingShingle | potatoes phytophthora infestans diploidy Manrique, N. Islam, M. Enciso-Rodriguez, F. Rosenzweig, N. Coombs, J. Douches, D. Mapping Solanum berthaultii-based late blight (Phytophthora infestans) resistance in a diploid population |
| title | Mapping Solanum berthaultii-based late blight (Phytophthora infestans) resistance in a diploid population |
| title_full | Mapping Solanum berthaultii-based late blight (Phytophthora infestans) resistance in a diploid population |
| title_fullStr | Mapping Solanum berthaultii-based late blight (Phytophthora infestans) resistance in a diploid population |
| title_full_unstemmed | Mapping Solanum berthaultii-based late blight (Phytophthora infestans) resistance in a diploid population |
| title_short | Mapping Solanum berthaultii-based late blight (Phytophthora infestans) resistance in a diploid population |
| title_sort | mapping solanum berthaultii based late blight phytophthora infestans resistance in a diploid population |
| topic | potatoes phytophthora infestans diploidy |
| url | https://hdl.handle.net/10568/110238 |
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