Water restriction scenarios and their effects on traits in potato with different degrees of drought tolerance
The search for plant traits associated with drought tolerance for genetic improvement is an important issue in breeding acceleration programs. However, plant traits expression depends on the drought scenario, thus the investigation of this dependence is crucial for drought tolerant related traits se...
| Autores principales: | , , , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2019
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/101472 |
| _version_ | 1855531726963474432 |
|---|---|
| author | Lin, X. Ramírez, D. Qin, J. Dormatey R. Bi, Zhenzhen Sun, C. Wang, H. Bai, J. |
| author_browse | Bai, J. Bi, Zhenzhen Dormatey R. Lin, X. Qin, J. Ramírez, D. Sun, C. Wang, H. |
| author_facet | Lin, X. Ramírez, D. Qin, J. Dormatey R. Bi, Zhenzhen Sun, C. Wang, H. Bai, J. |
| author_sort | Lin, X. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The search for plant traits associated with drought tolerance for genetic improvement is an important issue in breeding acceleration programs. However, plant traits expression depends on the drought scenario, thus the investigation of this dependence is crucial for drought tolerant related traits selection in important crops like potato. In this study, six potato genotypes with contrasted drought sensitivity were submitted to a long- (LTWR) from flower budding formation until harvest and short-term (STWR, 4 cycles) water restriction and compared to irrigated condition (control). Indicators related to chlorophyll concentration increase (ChlSPAD_Amp), senescence delay (as slope of chlorophyll concentration declined, SlopeChl), oxidative defense and damage through superoxide dismutase, peroxidase (POD) and malonaldehyde (MDA) synthesis in comparison with control (△) were calculated and contrasted with a drought tolerance index (DTI). ChlSPAD_Amp, △MDA and SlopeChl explained 22–55%, 74–72% and 0–81% of DTI linear variation under STWR-LTWR respectively. Significant correlations were found only under LTWR, where oxidative damage and defense (specially △POD) were associated with ChlSPAD_Amp and SlopeChl. This study cautions the drought scenario-dependency of some traits related to senescence delay and oxidative defense-damage, whereas the stability of leaf greenness (taking care of high drought sensitive genotypes) invites further efforts using remote sensing technologies for their test in large panel breeding programs. |
| format | Journal Article |
| id | CGSpace101472 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1014722025-03-13T09:46:28Z Water restriction scenarios and their effects on traits in potato with different degrees of drought tolerance Lin, X. Ramírez, D. Qin, J. Dormatey R. Bi, Zhenzhen Sun, C. Wang, H. Bai, J. senescence solanum tuberosum drought stress potatoes water drought tolerance The search for plant traits associated with drought tolerance for genetic improvement is an important issue in breeding acceleration programs. However, plant traits expression depends on the drought scenario, thus the investigation of this dependence is crucial for drought tolerant related traits selection in important crops like potato. In this study, six potato genotypes with contrasted drought sensitivity were submitted to a long- (LTWR) from flower budding formation until harvest and short-term (STWR, 4 cycles) water restriction and compared to irrigated condition (control). Indicators related to chlorophyll concentration increase (ChlSPAD_Amp), senescence delay (as slope of chlorophyll concentration declined, SlopeChl), oxidative defense and damage through superoxide dismutase, peroxidase (POD) and malonaldehyde (MDA) synthesis in comparison with control (△) were calculated and contrasted with a drought tolerance index (DTI). ChlSPAD_Amp, △MDA and SlopeChl explained 22–55%, 74–72% and 0–81% of DTI linear variation under STWR-LTWR respectively. Significant correlations were found only under LTWR, where oxidative damage and defense (specially △POD) were associated with ChlSPAD_Amp and SlopeChl. This study cautions the drought scenario-dependency of some traits related to senescence delay and oxidative defense-damage, whereas the stability of leaf greenness (taking care of high drought sensitive genotypes) invites further efforts using remote sensing technologies for their test in large panel breeding programs. 2019-06-04 2019-06-05T14:17:59Z 2019-06-05T14:17:59Z Journal Article https://hdl.handle.net/10568/101472 en Open Access Elsevier Li, X.; Ramírez, D.; Qin, J.; Dormatey, R.; Bi, Z., Sun, C.; Wang, H.; Bai, J. 2019. Water restriction scenarios and their effects on traits in potato with different degrees of drought tolerance. Scientia Horticulturae. ISSN 0304-4238. Available online 4 Jun 2019. 9p. |
| spellingShingle | senescence solanum tuberosum drought stress potatoes water drought tolerance Lin, X. Ramírez, D. Qin, J. Dormatey R. Bi, Zhenzhen Sun, C. Wang, H. Bai, J. Water restriction scenarios and their effects on traits in potato with different degrees of drought tolerance |
| title | Water restriction scenarios and their effects on traits in potato with different degrees of drought tolerance |
| title_full | Water restriction scenarios and their effects on traits in potato with different degrees of drought tolerance |
| title_fullStr | Water restriction scenarios and their effects on traits in potato with different degrees of drought tolerance |
| title_full_unstemmed | Water restriction scenarios and their effects on traits in potato with different degrees of drought tolerance |
| title_short | Water restriction scenarios and their effects on traits in potato with different degrees of drought tolerance |
| title_sort | water restriction scenarios and their effects on traits in potato with different degrees of drought tolerance |
| topic | senescence solanum tuberosum drought stress potatoes water drought tolerance |
| url | https://hdl.handle.net/10568/101472 |
| work_keys_str_mv | AT linx waterrestrictionscenariosandtheireffectsontraitsinpotatowithdifferentdegreesofdroughttolerance AT ramirezd waterrestrictionscenariosandtheireffectsontraitsinpotatowithdifferentdegreesofdroughttolerance AT qinj waterrestrictionscenariosandtheireffectsontraitsinpotatowithdifferentdegreesofdroughttolerance AT dormateyr waterrestrictionscenariosandtheireffectsontraitsinpotatowithdifferentdegreesofdroughttolerance AT bizhenzhen waterrestrictionscenariosandtheireffectsontraitsinpotatowithdifferentdegreesofdroughttolerance AT sunc waterrestrictionscenariosandtheireffectsontraitsinpotatowithdifferentdegreesofdroughttolerance AT wangh waterrestrictionscenariosandtheireffectsontraitsinpotatowithdifferentdegreesofdroughttolerance AT baij waterrestrictionscenariosandtheireffectsontraitsinpotatowithdifferentdegreesofdroughttolerance |