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Fusarium wilt constrains mungbean yield due to reduction in source availability

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Van Haeften, S., Kang, Y., Dudley, C., Potgieter, A., Robinson, H., Dinglasan, E., Wenham, K., Noble, T. J., Kelly, L. A., Douglas, C. A., Hickey, L. and Smith, M. R. (2024) Fusarium wilt constrains mungbean yield due to reduction in source availability. AoB PLANTS , plae021. ISSN 2041-2851


Article Link: https://doi.org/10.1093/aobpla/plae021


Mungbean [Vigna radiata (L.) R. Wilczek var. radiata] is an important source of plant protein for consumers and a high-value export crop for growers across Asia, Australia, and Africa. However, many commercial cultivars are highly vulnerable to biotic stresses, which rapidly reduces yield within the season. Fusarium oxysporum is a soil-borne pathogen that is a growing concern for mungbean growers globally. This pathogen causes Fusarium wilt by infecting the root system of the plant resulting in devastating yield reductions. To understand the impact of Fusarium on mungbean development and productivity and to identify tolerant genotypes, a panel of 23 diverse accessions were studied. Field trials conducted in 2016 and 2021 in Warwick, Queensland, Australia under rainfed conditions investigated the variation in phenology, canopy and yield component traits under disease and disease-free conditions. Analyses revealed a high degree of genetic variation for all traits. By comparing the performance of these traits across these two environments, we identified key traits that underpin yield under disease and disease-free conditions. Aboveground biomass components at 50% flowering were identified as significant drivers of yield development under disease-free conditions and when impacted by Fusarium resulted in up to 96% yield reduction. Additionally, eight genotypes were identified to be tolerant to Fusarium. These genotypes were found to display differing phenological and morphological behaviours, thereby demonstrating the potential to breed for tolerant lines with a range of diverse trait variations. The identification of tolerant genotypes that sustain yield under disease pressure may be exploited in crop improvement programs.

Item Type:Article
Corporate Creators:Department of Agriculture and Fisheries, Queensland
Business groups:Crop and Food Science
Keywords:Vigna radiata, Fusarium oxysporum, Seed yield, Phenology, Morphology
Subjects:Plant culture > Food crops
Plant culture > Field crops
Plant pests and diseases
Live Archive:17 Apr 2024 23:59
Last Modified:17 Apr 2024 23:59

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