Effect of Iron Toxicity on Rice Growth in Sulfato-ferruginous Lowland of South Senegal

Diédhiou, Sire; Goudiaby, Arfang Ousmane Kémo; Sagna, Yves Paterne; Diatta, Yaya; Diallo, Mariama Dalanda; Ndoye, Ibrahima

doi:10.11648/j.ajaf.20200801.12

Cited by 5 publications

(6 citation statements)

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“…Although in some studies, intense iron toxicity symptoms are associated with lowest yield (Diedhiou et al, 2020) but most of the inferior lines identified in our study did not show iron toxicity symptoms. Previously a decrease in rice yield has been reported even in plots where plant did not show any symptoms of iron toxicity (Hua et al, 2001;Sikirou et al, 2015).…”

Section: Resultscontrasting

confidence: 66%

Identification of Swarna x O. nivara (RPBio4918) advanced backcross lines performing well under acidic soil conditions

Debnath¹,

Rai²,

Tyagi³

2021

JEB

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Aim: To evaluate a set of ABLs (Advanced Backcross Lines) to identify lines perfoming well under acidic soil and iron toxicity hydroponics conditions. Methodology: A total of 194 ABLs were randomly used in lowland field randomly following augmented experimental design. Selected lines were screened in hydroponics condition using Yoshida’s solution for iron toxicity tolerance. Results: Under field conditions, several deficiencies and toxicities often co-exist, and it becomes difficult to partition the effect of different stresses on the genotypes. Therefore, screening genotypes in artificial hydroponics conditions allows us to dissect the response of a genotype to one particular nutrient toxicity or deficiency. Based on different traits superior, average and inferior performing lines were selected from field condition. Hydroponic experiment was conducted using Yoshida’s solution for iron toxicity screening, different superior and inferior lines were identified based on the parameters like root growth, root and shoot biomass. Four lines K 408, K 455, S 304, S 203 were identified that performed well in both field and Fe toxic hydroponic conditions. Interpretation: The information generated would help to identify suitable parents for breeding program under acidic soils, and the phenotypic data on ABLs may serve as a base for future mapping of loci responsible for yield under acidic soils and iron toxic conditions. Key words: Acidic soil, Advanced backcross lines, Hydroponic condition, Iron toxicity, Seedling stage screening

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Section: Resultscontrasting

confidence: 66%

Identification of Swarna x O. nivara (RPBio4918) advanced backcross lines performing well under acidic soil conditions

Debnath¹,

Rai²,

Tyagi³

2021

JEB

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“…In iron stressed environments, tilleing ability is reduced especially in severe Fe toxic condition. The symptoms of effected rice plant often associated with reduction in growth and tillering ability [8,31]. Tillering number of the genotypes increased with increase in iron concentration but declined at 1800mg of Fe, this could depict more excess Fe 2+ in the soil and becomes toxic to the plant.…”

Section: Agronomic Performance Of the Tested Genotypesmentioning

confidence: 99%

Effects of Iron on the Productivity of Lowland Rice (O. sativa L.) in Segregating Populations

Andrew¹,

Dorcas²,

Olawale³

2020

AJAF

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Rice plants have the tendency of taking up iron in the form of Fe 2+ , which is prevalent in paddy fields under flooded environments. But its deficiency or in excess of Fe 2+ in the soil affect several physiological functions of the plant. The objective of the study was to evaluates the effect of three ferrous sulphate concentration levels on the yield and yield components of lowland segregating rice populations. Three experiments were established in screenhouse concurrently in randomized complete block design in three replications in pots. Treatment comprised of 6 breeding lines each from two rice populations of F2 and F3 generations and two popular checks. Experiment one is the control without FeSO 4 treatment, while experiment two and three are F2 and F3 populations, respectively treated with FeSO 4 solution. Three concentration levels of FeSO 4 solution (600mg/kg of soil, 1200mg/kg of soil, and 1800mg/kg of soil,) were applied into each pots a week before transplanting in the treated experiments. Remarkable reduction in effective tiller number at 1800mg of Fe stress relative to the control was observed of 42.6% and 42.9% in F2 and F3 population, respectively. Significant reduction in grain yield of 33.5% and 36.4% at 1800mg of Fe compared to the control in F2 and F3 populations, respectively. The study showed that at 1200mg of Fe could be optimal for rice crop performance and at 1800mg of Fe becomes toxic to the plant as observed significant reduction in all agronomic traits especially in total grain yield. In F2 and F3 population, UPN 59, UPIA 2 and UPN 95 where the most stable genotypes across iron concentration levels. These genotypes could be used in population development for iron breeding programme.

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“…Authors such as Belmonte et al (2017) have estimated that there is up to 67,700 ppm of bioavailable iron in the top soil occupied by the crops. This high metal concentration may be negatively affecting the crops' growth as Diedhiou et al (2020) and Rasheed et al (2020) have observed. Iron excess in plants can displace cell redox balance into a pro-oxidant state, which may produce cell death because of oxidative stress, reducing plant growth and crop productivity (Diedhiou et al, 2020).…”

Section: Distribution Of Hydroxyl-bearing Mineralsmentioning

confidence: 99%

“…This high metal concentration may be negatively affecting the crops' growth as Diedhiou et al (2020) and Rasheed et al (2020) have observed. Iron excess in plants can displace cell redox balance into a pro-oxidant state, which may produce cell death because of oxidative stress, reducing plant growth and crop productivity (Diedhiou et al, 2020). A high metal content in soil can lead to morphological, metabolic, physiological, and molecular aberration, such as chlorosis of leaves or enzymatic peroxidation of membranes (Singhal et al, 2022).…”

Section: Distribution Of Hydroxyl-bearing Mineralsmentioning

confidence: 99%

Monitoring sedimentary areas from mine waste products with Sentinel‐2 satellite images: A case study in theSEof Spain

Pereira

Alcalde-Aparicio

Ferrer-Juliá

et al. 2023

European J Soil Science

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Torrential rainfall regimes, among others, are the origin of accelerated soil erosion. The Spanish southeastern Mediterranean region is characterised by an arid climate regime affected by extreme erosion episodes with an important loss of sediments. Soil erosion effects are even more noticeable in areas where soil has been anthropically degraded, as in the mining district of Sierra Minera de Cartagena. The present research focuses on monitoring and mapping the changes in the sediment distribution of iron oxides and hydroxyl (OH−) bearing minerals caused by a cold drop known in Spanish as 'DANA' in September 2019 on the Rambla del Beal. This short rambla is fed by sediments from its drainage basin and by mining residues, irrigating a wide agricultural area. When discharges overflow the rambla channel, residues spread over its floodplain and reach the ecological protected coastal lagoon Mar Menor. The objective of the study was mapping the mineral distribution of the mining materials eroded from the source areas and sedimented in Rambla del Beal during a DANA. The study was carried out using a pre‐ and a post‐DANA image from the Sentinel‐2 satellite. After masking vegetation, urban areas and water bodies, different band ratios (B4/B3, B11/B12, B8A/B6) and a Spectral Angle Mapper (SAM) classification were applied. Sediment deposits were identified in wider areas after the DANA. Iron oxides increased their extension by 11.08% in the central area (B3/B4 with R2 of 0.84) and hydroxyl‐bearing minerals increased by 8.95% in the Rambla del Beal's headwaters (B11/B12 with R2 of 0.71). The SAM classification (with a 0.1 rad threshold and an overall accuracy of 87.33%) allowed the differentiation and classification of two ferric iron oxides (haematite and goethite) and one iron hydrous sulphate mineral (jarosite). Additionally, band ratio images were spatially overlaid with the soil land uses map layer of the cadastre in order to plot the land uses most affected by the transported sediments during the DANA. These results highlighted agricultural land as the areas (land uses) most affected by iron oxides deposition, as oxidation processes occur more rapidly in these areas. However, grassland and scrubland were the areas with the highest content of hydroxyl‐bearing minerals, as water is accumulated in these places, which favours hydrolysis reactions. Highlights Torrential events can relocate large volumes of contaminated sediments from former mining areas. Sentinel‐2 allows monitoring mine waste iron‐sulphate changes caused by weathering alteration. Spatial mineralogical pattern in sediments is controlled by geomorphology and flood dynamics. The proposed digital image analysis allows mapping short‐term evolution of mine waste sediments.

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Effect of Iron Toxicity on Rice Growth in Sulfato-ferruginous Lowland of South Senegal

Cited by 5 publications

References 0 publications

Identification of Swarna x O. nivara (RPBio4918) advanced backcross lines performing well under acidic soil conditions

Identification of Swarna x O. nivara (RPBio4918) advanced backcross lines performing well under acidic soil conditions

Effects of Iron on the Productivity of Lowland Rice (O. sativa L.) in Segregating Populations

Monitoring sedimentary areas from mine waste products with Sentinel‐2 satellite images: A case study in theSEof Spain

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