Does wet seeding combined with Sub1 varieties increase yield in submergence prone lowlands of West Africa?

Devkota, Krishna Prasad; Futakuchi, Koichi; Mel, Valère Cesse; Humphreys, E.

doi:10.1016/j.fcr.2021.108375

Cited by 5 publications

(2 citation statements)

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“…Compared with flat tillage, ridge tillage is conducive to the reproduction and growth of surface soil microorganisms, thus improving soil vitality, water retention, and water use efficiency [200,201]. Wet seeding at the beginning of the rainy season allows for more timely and rapid establishment of crop early growth [202]. Similar to the idea of the ridge-ditch system, raised bed planting is often used to reduce waterlogging damage when planting wheat after a rice harvest in the Yangtze River Plain of China [203].…”

Section: Challenges and Prospectsmentioning

confidence: 99%

Updates and Prospects: Morphological, Physiological, and Molecular Regulation in Crop Response to Waterlogging Stress

Yang,

Li,

Liu

et al. 2023

Agronomy

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With the frequent occurrence of extreme weather such as typhoons and rainstorms, waterlogging has become one of the most important threats to global crop growth and production. Waterlogging limits plants’ access to oxygen and light, leading to disadvantageous changes in metabolism to disturb plant growth and development. To escape the damage of hypoxia or promote the diffusion of oxygen to submerged organs, plants respond to waterlogging stress by regulating their morphological structure, photosynthesis, respiration, energy metabolism, and endogenous plant hormone biosynthesis/signal transduction. The adventitious roots (AR), aerenchyma, and stem internode are the major target structure for waterlogging adaptation. The molecular mechanism of crop survival under waterlogging conditions and the key genes related photosynthesis, reactive oxygen species (ROS) homeostasis, and ethylene signal transduction are reviewed. We also elucidated recent advances in the study of interactions between various regulatory pathways and emphasized the important role of stress memory and cross-stress mechanisms in plant response to abiotic stress, indicating the importance of epigenetic modifications. On the basis of above, the research direction and focus of plants coping with waterlogging stress in the future are proposed. This review provides rich genetic resources and a theoretical basis for improving the genetic breeding of crop resistance to waterlogging.

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Section: Challenges and Prospectsmentioning

confidence: 99%

Updates and Prospects: Morphological, Physiological, and Molecular Regulation in Crop Response to Waterlogging Stress

Yang,

Li,

Liu

et al. 2023

Agronomy

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“…The farmers selected FARO 66 as their preferred variety over the others due to its high yield and large panicles. The comparison of varietal resilience to submergence when wet seeded or transplanted using FARO 66, FARO 67, and a local check WITA 9 in Cote d′Ivoire indicated that the yields of two submergence varieties (FARO 66 and FARO 67) are not affected by either the growing season or crop establishment method unlike the local check (Devkota et al, 2022). The yields of the submergence tolerant varieties, regardless of the growing season and establishment method, were 1.1-4.5 t/ha higher than those of WITA 9.…”

Section: Potential Advantages Of Flood-tolerant Rice In Africamentioning

confidence: 99%

Flood-tolerant rice for enhanced production and livelihood of smallholder farmers of Africa

Mwakyusa,

Dixit,

Herzog

et al. 2023

Front. Sustain. Food Syst.

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Climate change has intensified food security challenges, especially in Africa, where a significant portion of produce is reliant on smallholder farmers in rainfed conditions. Prolonged flooding and droughts, driven by erratic weather patterns, have significantly elevated the risk of food scarcity. Floods, in particular, have been responsible for severe crop losses, raising concerns about increasing import costs if this issue is not mitigated. Africa is actively working to mitigate the impacts of flooding and enhance food security, although progress has been gradual. Developing flood-resilient varieties is a promising strategy to address this challenge. We explored various flood types common in the region and observed a scarcity of research on flood-resilient varieties, particularly those adapted for anaerobic germination and stagnant flooding. Conversely, varieties bred for flash flooding, such as FARO 66 and FARO 67, have seen limited distribution, primarily confined to a few West African countries, falling short of the intended impact. In contrast, deepwater tolerance research dates back to the early 1900s, but commercialization of the varieties remains limited, with scarce information regarding their cultivation, coverage, and performance. Newly developed varieties, such as Kolondieba 2 and Kadia 24, have received less attention, leaving many farmers dependent on locally adapted cultivars specific to particular areas. Remarkably, despite the limited information, both released and local stress-tolerant cultivars exhibit substantial survival rates and yield advantages. For instance, FARO 66 and FARO 67 have demonstrated 1–3 t/ha yield advantages over recurrent parents under flooding stress. Nonetheless, further efforts are required to address various forms of flooding. To this end, AfricaRice collaborates with National Rice Development Strategies, IRRI, and other partners to promote research and development. While improved flood-tolerant varieties remain limited in scope across Africa, the financial gains for farmers are significant when compared to susceptible cultivars. As the continent’s population continues to grow rapidly, there is untapped potential in African germplasms, making ongoing research and breeding strategies essential. Therefore, this review highlights the importance of intensifying efforts in screening and identifying flood-tolerant rice. Furthermore, it underscores the value of utilizing traditional flood-resilient cultivars in breeding to enhance the productivity of widely distributed and cultivated varieties.

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A participatory framework for prioritizing climate-smart agriculture innovations in rice-based systems: A case study of Mali

Dossou-Yovo,

Arouna,

Benfica

et al. 2024

Smart Agricultural Technology

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Does wet seeding combined with Sub1 varieties increase yield in submergence prone lowlands of West Africa?

Cited by 5 publications

References 45 publications

Updates and Prospects: Morphological, Physiological, and Molecular Regulation in Crop Response to Waterlogging Stress

Updates and Prospects: Morphological, Physiological, and Molecular Regulation in Crop Response to Waterlogging Stress

Flood-tolerant rice for enhanced production and livelihood of smallholder farmers of Africa

A participatory framework for prioritizing climate-smart agriculture innovations in rice-based systems: A case study of Mali

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