Drought Resistance Indices for Screening of Potato (Solanum tuberosum L.) Genotypes
In breeding for drought tolerance, availability of precise, cheap and easy to apply selection tool is critical. The aim of the present study was to identify potential screening tools that are useful for selection of drought tolerant genotypes in potato and select drought resistant potato genotypes....
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Turkish Science and Technology Publishing (TURSTEP)
2019-08-01
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| Series: | Turkish Journal of Agriculture: Food Science and Technology |
| Subjects: | |
| Online Access: | http://www.agrifoodscience.com/index.php/TURJAF/article/view/2226 |
| _version_ | 1797913998443675648 |
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| author | Zerihun Kebede Beyene Firew Mekbib Tesfaye Abebe Asrat Asfaw |
| author_facet | Zerihun Kebede Beyene Firew Mekbib Tesfaye Abebe Asrat Asfaw |
| author_sort | Zerihun Kebede Beyene |
| collection | DOAJ |
| description | In breeding for drought tolerance, availability of precise, cheap and easy to apply selection tool is critical. The aim of the present study was to identify potential screening tools that are useful for selection of drought tolerant genotypes in potato and select drought resistant potato genotypes. The study assessed sixty clones arranged in a 10×6 alpha lattice design with two replicates in a managed stress experiment. Two irrigation treatments were applied: fully watered non-stress and terminal drought, where the irrigation water supply to the crop was withheld after 50 % flowering to induce post-flowering stress. Stress indices were calculated based on tuber yield of genotypes in both stressed and non-stressed conditions. Identification of drought tolerant genotypes based on a single index was less informative as different indices identified different genotypes as drought tolerant. Hence, to determine the most desirable drought tolerant clones rank sum of indices, correlation, and bi-plot display of the principal component analysis was employed. The indices modified stress tolerance index based on non-stressed yield, Men productivity, Geometric mean productivity, Stress tolerance index, Harmonic mean, modified stress tolerance index based on stressed yield and Yield index exhibited strong association with both yield under stressed and non-stressed yield. These indices discriminated drought tolerant genotypes with higher tuber yielding potential both under stress and non-stress conditions. Genotypes CIP-398180.612, CIP-397069.5, and CIP-304371.67 were identified as drought tolerant. These genotypes could be potentially grown both under drought prone and potential environments and these selection attributes could help to develop climate resilient potato varieties. |
| first_indexed | 2024-04-10T12:20:04Z |
| format | Article |
| id | doaj.art-6311723579874e95a1930e9b0ac0f80f |
| institution | Directory Open Access Journal |
| issn | 2148-127X |
| language | English |
| last_indexed | 2024-04-10T12:20:04Z |
| publishDate | 2019-08-01 |
| publisher | Turkish Science and Technology Publishing (TURSTEP) |
| record_format | Article |
| series | Turkish Journal of Agriculture: Food Science and Technology |
| spelling | doaj.art-6311723579874e95a1930e9b0ac0f80f2023-02-15T16:15:31ZengTurkish Science and Technology Publishing (TURSTEP)Turkish Journal of Agriculture: Food Science and Technology2148-127X2019-08-01781118112410.24925/turjaf.v7i8.1118-1124.22261203Drought Resistance Indices for Screening of Potato (Solanum tuberosum L.) GenotypesZerihun Kebede Beyene0Firew Mekbib1Tesfaye Abebe2Asrat Asfaw3Amhara Regional Agricultural Research Institute, P.O.Box:112, Debre birhanHaramaya University (HUEthiopian Institute of Agricultural Research (EIAR)International institute of tropical Agriculture (IITA)In breeding for drought tolerance, availability of precise, cheap and easy to apply selection tool is critical. The aim of the present study was to identify potential screening tools that are useful for selection of drought tolerant genotypes in potato and select drought resistant potato genotypes. The study assessed sixty clones arranged in a 10×6 alpha lattice design with two replicates in a managed stress experiment. Two irrigation treatments were applied: fully watered non-stress and terminal drought, where the irrigation water supply to the crop was withheld after 50 % flowering to induce post-flowering stress. Stress indices were calculated based on tuber yield of genotypes in both stressed and non-stressed conditions. Identification of drought tolerant genotypes based on a single index was less informative as different indices identified different genotypes as drought tolerant. Hence, to determine the most desirable drought tolerant clones rank sum of indices, correlation, and bi-plot display of the principal component analysis was employed. The indices modified stress tolerance index based on non-stressed yield, Men productivity, Geometric mean productivity, Stress tolerance index, Harmonic mean, modified stress tolerance index based on stressed yield and Yield index exhibited strong association with both yield under stressed and non-stressed yield. These indices discriminated drought tolerant genotypes with higher tuber yielding potential both under stress and non-stress conditions. Genotypes CIP-398180.612, CIP-397069.5, and CIP-304371.67 were identified as drought tolerant. These genotypes could be potentially grown both under drought prone and potential environments and these selection attributes could help to develop climate resilient potato varieties.http://www.agrifoodscience.com/index.php/TURJAF/article/view/2226correlationprincipal component analysisstress indicestuber yielddrought |
| spellingShingle | Zerihun Kebede Beyene Firew Mekbib Tesfaye Abebe Asrat Asfaw Drought Resistance Indices for Screening of Potato (Solanum tuberosum L.) Genotypes Turkish Journal of Agriculture: Food Science and Technology correlation principal component analysis stress indices tuber yield drought |
| title | Drought Resistance Indices for Screening of Potato (Solanum tuberosum L.) Genotypes |
| title_full | Drought Resistance Indices for Screening of Potato (Solanum tuberosum L.) Genotypes |
| title_fullStr | Drought Resistance Indices for Screening of Potato (Solanum tuberosum L.) Genotypes |
| title_full_unstemmed | Drought Resistance Indices for Screening of Potato (Solanum tuberosum L.) Genotypes |
| title_short | Drought Resistance Indices for Screening of Potato (Solanum tuberosum L.) Genotypes |
| title_sort | drought resistance indices for screening of potato solanum tuberosum l genotypes |
| topic | correlation principal component analysis stress indices tuber yield drought |
| url | http://www.agrifoodscience.com/index.php/TURJAF/article/view/2226 |
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