Screening of potential donors for anaerobic stress tolerance during germination in rice

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Screening of potential donors for anaerobic stress tolerance during germination in rice. / Mwakyusa, Lupakisyo; Heredia, Maria Cristina; Kilasi, Newton Lwiyiso; Madege, Richard R.; Herzog, Max; Dixit, Shalabh.

In: Frontiers in Plant Science, Vol. 14, 1261101, 2023.

Research output: Contribution to journalJournal articleResearchpeer-review

Harvard

Mwakyusa, L, Heredia, MC, Kilasi, NL, Madege, RR, Herzog, M & Dixit, S 2023, 'Screening of potential donors for anaerobic stress tolerance during germination in rice', Frontiers in Plant Science, vol. 14, 1261101. https://doi.org/10.3389/fpls.2023.1261101

APA

Mwakyusa, L., Heredia, M. C., Kilasi, N. L., Madege, R. R., Herzog, M., & Dixit, S. (2023). Screening of potential donors for anaerobic stress tolerance during germination in rice. Frontiers in Plant Science, 14, [1261101]. https://doi.org/10.3389/fpls.2023.1261101

Vancouver

Mwakyusa L, Heredia MC, Kilasi NL, Madege RR, Herzog M, Dixit S. Screening of potential donors for anaerobic stress tolerance during germination in rice. Frontiers in Plant Science. 2023;14. 1261101. https://doi.org/10.3389/fpls.2023.1261101

Author

Mwakyusa, Lupakisyo ; Heredia, Maria Cristina ; Kilasi, Newton Lwiyiso ; Madege, Richard R. ; Herzog, Max ; Dixit, Shalabh. / Screening of potential donors for anaerobic stress tolerance during germination in rice. In: Frontiers in Plant Science. 2023 ; Vol. 14.

Bibtex

@article{5f8ba52079ba426a8d9ab0556fb620ef,
title = "Screening of potential donors for anaerobic stress tolerance during germination in rice",
abstract = "The rising cost of transplanting rice has made direct seeding an affordable alternative for rice establishment, particularly in Africa. However, direct seeding, while cost-effective, faces crop establishment challenges due to flooding. Uncontrolled water, driven by erratic rains in low-lying areas or uneven fields, limit germination. Rice possesses the unique ability of anaerobic germination, enabling it to sprout and emerge in oxygen-deprived conditions. Understanding rice{\textquoteright}s response to anaerobic stress during germination is crucial for resilience breeding. Africa, although relying on direct seeding, has made limited progress in addressing flooding during germination compared to Asia. Anaerobic stress tolerance ensures successful crop emergence even in oxygen-limited environments and can help suppress weeds, a significant challenge in direct-seeded rice cultivation. This study aims to contribute by screening for potential rice donors exhibiting anaerobic stress tolerance. We screened 200 rice genotypes at Sokoine University of Agriculture (SUA) in Morogoro, Tanzania, primarily focusing on landraces with untapped potential. Using an alpha lattice design, we conducted two anaerobic experiments in September and October 2022, adding 7 cm of standing water immediately after dry seeding for flooded and maintaining a 2 cm water level after germination in the control for duration of 21 days. We identified potential donors based on selection index computed from genomic estimated breeding values (GEBVs) using eight variables: germination at 14 DAS, germination at 21 DAS, seedling height at 14 DAS, seedling height at 21 DAS, shoot dry matter at 21 DAS, root dry matter at 21 DAS, culm diameter at 21 DAS, and root length at 21DAS. Ten genotypes emerged as the most promising, exhibiting at least 70% germination in floodwater at 21 DAS and greater selection indices. These genotypes were like: Afaa Mwanza 1/159, Rojomena 271/10, Kubwa Jinga, Wahiwahi, Magongo ya Wayungu, Mpaka wa Bibi, Mwangaza, Tarabinzona, IB126-Bug 2013A, and Kanamalia with respective percentages of 75, 74, 71, 86, 75, 80, 71, 80, 70, and 73. These findings contribute to global efforts to mitigate the impacts of flooding during germination. These donors, will be potential to enrich the gene pool for anaerobic germination, providing valuable resources for breeding for flooding tolerance.",
keywords = "flood tolerance, flooding, genotypes, germination, rice",
author = "Lupakisyo Mwakyusa and Heredia, {Maria Cristina} and Kilasi, {Newton Lwiyiso} and Madege, {Richard R.} and Max Herzog and Shalabh Dixit",
note = "Publisher Copyright: Copyright {\textcopyright} 2023 Mwakyusa, Heredia, Kilasi, Madege, Herzog and Dixit.",
year = "2023",
doi = "10.3389/fpls.2023.1261101",
language = "English",
volume = "14",
journal = "Frontiers in Plant Science",
issn = "1664-462X",
publisher = "Frontiers Media S.A.",

}

RIS

TY - JOUR

T1 - Screening of potential donors for anaerobic stress tolerance during germination in rice

AU - Mwakyusa, Lupakisyo

AU - Heredia, Maria Cristina

AU - Kilasi, Newton Lwiyiso

AU - Madege, Richard R.

AU - Herzog, Max

AU - Dixit, Shalabh

N1 - Publisher Copyright: Copyright © 2023 Mwakyusa, Heredia, Kilasi, Madege, Herzog and Dixit.

PY - 2023

Y1 - 2023

N2 - The rising cost of transplanting rice has made direct seeding an affordable alternative for rice establishment, particularly in Africa. However, direct seeding, while cost-effective, faces crop establishment challenges due to flooding. Uncontrolled water, driven by erratic rains in low-lying areas or uneven fields, limit germination. Rice possesses the unique ability of anaerobic germination, enabling it to sprout and emerge in oxygen-deprived conditions. Understanding rice’s response to anaerobic stress during germination is crucial for resilience breeding. Africa, although relying on direct seeding, has made limited progress in addressing flooding during germination compared to Asia. Anaerobic stress tolerance ensures successful crop emergence even in oxygen-limited environments and can help suppress weeds, a significant challenge in direct-seeded rice cultivation. This study aims to contribute by screening for potential rice donors exhibiting anaerobic stress tolerance. We screened 200 rice genotypes at Sokoine University of Agriculture (SUA) in Morogoro, Tanzania, primarily focusing on landraces with untapped potential. Using an alpha lattice design, we conducted two anaerobic experiments in September and October 2022, adding 7 cm of standing water immediately after dry seeding for flooded and maintaining a 2 cm water level after germination in the control for duration of 21 days. We identified potential donors based on selection index computed from genomic estimated breeding values (GEBVs) using eight variables: germination at 14 DAS, germination at 21 DAS, seedling height at 14 DAS, seedling height at 21 DAS, shoot dry matter at 21 DAS, root dry matter at 21 DAS, culm diameter at 21 DAS, and root length at 21DAS. Ten genotypes emerged as the most promising, exhibiting at least 70% germination in floodwater at 21 DAS and greater selection indices. These genotypes were like: Afaa Mwanza 1/159, Rojomena 271/10, Kubwa Jinga, Wahiwahi, Magongo ya Wayungu, Mpaka wa Bibi, Mwangaza, Tarabinzona, IB126-Bug 2013A, and Kanamalia with respective percentages of 75, 74, 71, 86, 75, 80, 71, 80, 70, and 73. These findings contribute to global efforts to mitigate the impacts of flooding during germination. These donors, will be potential to enrich the gene pool for anaerobic germination, providing valuable resources for breeding for flooding tolerance.

AB - The rising cost of transplanting rice has made direct seeding an affordable alternative for rice establishment, particularly in Africa. However, direct seeding, while cost-effective, faces crop establishment challenges due to flooding. Uncontrolled water, driven by erratic rains in low-lying areas or uneven fields, limit germination. Rice possesses the unique ability of anaerobic germination, enabling it to sprout and emerge in oxygen-deprived conditions. Understanding rice’s response to anaerobic stress during germination is crucial for resilience breeding. Africa, although relying on direct seeding, has made limited progress in addressing flooding during germination compared to Asia. Anaerobic stress tolerance ensures successful crop emergence even in oxygen-limited environments and can help suppress weeds, a significant challenge in direct-seeded rice cultivation. This study aims to contribute by screening for potential rice donors exhibiting anaerobic stress tolerance. We screened 200 rice genotypes at Sokoine University of Agriculture (SUA) in Morogoro, Tanzania, primarily focusing on landraces with untapped potential. Using an alpha lattice design, we conducted two anaerobic experiments in September and October 2022, adding 7 cm of standing water immediately after dry seeding for flooded and maintaining a 2 cm water level after germination in the control for duration of 21 days. We identified potential donors based on selection index computed from genomic estimated breeding values (GEBVs) using eight variables: germination at 14 DAS, germination at 21 DAS, seedling height at 14 DAS, seedling height at 21 DAS, shoot dry matter at 21 DAS, root dry matter at 21 DAS, culm diameter at 21 DAS, and root length at 21DAS. Ten genotypes emerged as the most promising, exhibiting at least 70% germination in floodwater at 21 DAS and greater selection indices. These genotypes were like: Afaa Mwanza 1/159, Rojomena 271/10, Kubwa Jinga, Wahiwahi, Magongo ya Wayungu, Mpaka wa Bibi, Mwangaza, Tarabinzona, IB126-Bug 2013A, and Kanamalia with respective percentages of 75, 74, 71, 86, 75, 80, 71, 80, 70, and 73. These findings contribute to global efforts to mitigate the impacts of flooding during germination. These donors, will be potential to enrich the gene pool for anaerobic germination, providing valuable resources for breeding for flooding tolerance.

KW - flood tolerance

KW - flooding

KW - genotypes

KW - germination

KW - rice

U2 - 10.3389/fpls.2023.1261101

DO - 10.3389/fpls.2023.1261101

M3 - Journal article

C2 - 38023850

AN - SCOPUS:85177659641

VL - 14

JO - Frontiers in Plant Science

JF - Frontiers in Plant Science

SN - 1664-462X

M1 - 1261101

ER -

ID: 375206828