Adaptation to floods: exploring coleoptile variability for flooding resilience of direct seeded rice during germination
Variations in coleoptile elongation offer insights into rice adaptation to flooding stress during germination. Unfortunately, this trait remains understudied in African germplasms despite the prevalent direct seeding practice prone to floods. To address this gap, 44 rice genotypes, including anaerob...
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Taylor & Francis Group
2024-12-01
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| Series: | Cogent Food & Agriculture |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/23311932.2024.2388600 |
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| author | Lupakisyo Mwakyusa Newton Lwiyiso Kilasi Richard Raphael Madege Maria Cristina Heredia Shalabh Dixit Max Herzog |
| author_facet | Lupakisyo Mwakyusa Newton Lwiyiso Kilasi Richard Raphael Madege Maria Cristina Heredia Shalabh Dixit Max Herzog |
| author_sort | Lupakisyo Mwakyusa |
| collection | DOAJ |
| description | Variations in coleoptile elongation offer insights into rice adaptation to flooding stress during germination. Unfortunately, this trait remains understudied in African germplasms despite the prevalent direct seeding practice prone to floods. To address this gap, 44 rice genotypes, including anaerobic germination-tolerant and susceptible checks, underwent screening for coleoptile elongation after submergence in glass bottles. The Anaerobic Response Index (ARI) and Anaerobic Tolerance Index (ATI) were used, forming six clusters highlighting diverse elongation abilities. Cluster III, comprising genotypes NERICA 7, Kanamalia, Wahiwahi, Rojomena 271/10, Kubwa jinga, Faya mafuta, Mwasungo, and Ciherang Sub1 AG1 AG2, demonstrated potential for selection and adaptation to flooding, showing promising elongation characteristics. Positive correlations (0.675 for ARI, 0.66 for ATI) with anaerobic germination percentage underscored the link between elongation and germination. These findings not only advance our understanding of rice’s flood adaptability in Africa but also provide crucial breeding materials for enhancing direct-seeded rice resilience. Therefore, the promising genotypes identified in this study with enhanced coleoptile elongation mechanisms for surviving early floods following seeding are relevant for breeding initiatives aimed at increasing crop emergence and survival during these early flooding events. This resilience will ultimately enhance production and address food security challenges for farmers in flood-prone areas. |
| format | Article |
| id | doaj-art-b531eeeb77384f679ecb6e8b9b672342 |
| institution | Kabale University |
| issn | 2331-1932 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Cogent Food & Agriculture |
| spelling | doaj-art-b531eeeb77384f679ecb6e8b9b6723422024-12-13T09:52:54ZengTaylor & Francis GroupCogent Food & Agriculture2331-19322024-12-0110110.1080/23311932.2024.2388600Adaptation to floods: exploring coleoptile variability for flooding resilience of direct seeded rice during germinationLupakisyo Mwakyusa0Newton Lwiyiso Kilasi1Richard Raphael Madege2Maria Cristina Heredia3Shalabh Dixit4Max Herzog5Department of Research and Innovation, Tanzania Agricultural Research Institute, Kihinga, Kigoma, TanzaniaDepartment of Crop Science and Horticulture, College of Agriculture, Sokoine University of Agriculture, Morogoro, TanzaniaDepartment of Crop Science and Horticulture, College of Agriculture, Sokoine University of Agriculture, Morogoro, TanzaniaRice Breeding Innovations Department, International Rice Research Institute, Los Baños, Laguna, PhilippinesRice Breeding Innovations Department, International Rice Research Institute, Los Baños, Laguna, PhilippinesDepartment of Biology, University of Copenhagen, Copenhagen, DenmarkVariations in coleoptile elongation offer insights into rice adaptation to flooding stress during germination. Unfortunately, this trait remains understudied in African germplasms despite the prevalent direct seeding practice prone to floods. To address this gap, 44 rice genotypes, including anaerobic germination-tolerant and susceptible checks, underwent screening for coleoptile elongation after submergence in glass bottles. The Anaerobic Response Index (ARI) and Anaerobic Tolerance Index (ATI) were used, forming six clusters highlighting diverse elongation abilities. Cluster III, comprising genotypes NERICA 7, Kanamalia, Wahiwahi, Rojomena 271/10, Kubwa jinga, Faya mafuta, Mwasungo, and Ciherang Sub1 AG1 AG2, demonstrated potential for selection and adaptation to flooding, showing promising elongation characteristics. Positive correlations (0.675 for ARI, 0.66 for ATI) with anaerobic germination percentage underscored the link between elongation and germination. These findings not only advance our understanding of rice’s flood adaptability in Africa but also provide crucial breeding materials for enhancing direct-seeded rice resilience. Therefore, the promising genotypes identified in this study with enhanced coleoptile elongation mechanisms for surviving early floods following seeding are relevant for breeding initiatives aimed at increasing crop emergence and survival during these early flooding events. This resilience will ultimately enhance production and address food security challenges for farmers in flood-prone areas.https://www.tandfonline.com/doi/10.1080/23311932.2024.2388600Coleoptile elongationanaerobic germinationadaptationrice genotypesfloodingAgriculture & Environmental Sciences |
| spellingShingle | Lupakisyo Mwakyusa Newton Lwiyiso Kilasi Richard Raphael Madege Maria Cristina Heredia Shalabh Dixit Max Herzog Adaptation to floods: exploring coleoptile variability for flooding resilience of direct seeded rice during germination Cogent Food & Agriculture Coleoptile elongation anaerobic germination adaptation rice genotypes flooding Agriculture & Environmental Sciences |
| title | Adaptation to floods: exploring coleoptile variability for flooding resilience of direct seeded rice during germination |
| title_full | Adaptation to floods: exploring coleoptile variability for flooding resilience of direct seeded rice during germination |
| title_fullStr | Adaptation to floods: exploring coleoptile variability for flooding resilience of direct seeded rice during germination |
| title_full_unstemmed | Adaptation to floods: exploring coleoptile variability for flooding resilience of direct seeded rice during germination |
| title_short | Adaptation to floods: exploring coleoptile variability for flooding resilience of direct seeded rice during germination |
| title_sort | adaptation to floods exploring coleoptile variability for flooding resilience of direct seeded rice during germination |
| topic | Coleoptile elongation anaerobic germination adaptation rice genotypes flooding Agriculture & Environmental Sciences |
| url | https://www.tandfonline.com/doi/10.1080/23311932.2024.2388600 |
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