Response of Common Bean Genotypes Grown in Soil with Normal or Limited Moisture, with Special Reference to the Nutrient Phosphorus

Namugwanya, M.; Tenywa, J. S.; Otabbong, Erasmus

doi:10.3390/agronomy8080132

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…Josipovic believed that phosphorus application can reduce the damage of drought to yield to a certain extent ( Josipovi et al., 2012 ). Namugwanya used bean development as an example to study agricultural countermeasures to cope with phosphorus deficiency and drought stress in soil ( Namugwanya et al., 2018 ).They generally believed that drought and phosphorus deficiency will become important constraints in future habitats. The drought may affect phosphorus uptake and transport, exacerbating negative effects on plant production.…”

Section: Introductionmentioning

confidence: 99%

Response of Carex breviculmis to phosphorus deficiency and drought stress

et al. 2023

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IntroductionThe drought and phosphorus deficiency have inevitably become environmental issues globally in the future. The analysis of plants functional trait variation and response strategies under the stress of phosphorus deficiency and drought is important to explore their ability to respond to potential ecological stress.MethodsIn this study, Carex breviculmis was selected as the research object, and a 14-week pot experiment was conducted in a greenhouse, with two phosphorus treatment (add 0.5mmol/L or 0.05μmol/L phosphorus) and four drought treatment (add 0-5%PEG6000), totaling eight treatments. Biomass allocation characteristics, leaf anatomical characteristics, biochemical parameters, root morphology, chemical element content, and photosynthetic parameters were measured.ResultsThe results showed that the anatomical characteristics, chemical elements, and photosynthetic parameters of Carex breviculmis responded more significantly to main effect of phosphorus deficiency. Stomatal width, leaf phosphorus content and maximum net photosynthetic rate decreased by 11.38%, 59.39%, 38.18% significantly (p<0.05), while the change in biomass was not significant (p>0.05). Biomass allocation characteristics and root morphology responded more significantly to main effect of drought. Severe drought significantly decreased leaf fresh weight by 61% and increased root shoot ratio by 223.3% compared to the control group (p<0.05). The combined effect of severe drought and phosphorus deficiency produced the highest leaf N/P ratio (291.1% of the control) and MDA concentration (243.6% of the control). Correlation analysis and redundancy analysis showed that the contributions of phosphorus and drought to functional trait variation were similar. Lower epidermal cell thickness was positively correlated with maximum net photosynthetic rate, leaf phosphorus, chlorophyll ab, and leaf fresh weight (p<0.05).DiscussionIn terms of response strategy, Carex breviculmis was affected at the microscopic level under phosphorus deficiency stress, but could maintain the aboveground and underground biomass well through a series of mechanisms. When affected by drought, it adopted the strategy of reducing leaf yield and improving root efficiency to maintain life activities. Carex breviculmis could maintain its traits well under low phosphorus and moderate drought, or better conditions. So it may have good ecological service potential in corresponding areas if promoted. This study also provided a reference for plant response to combined drought and phosphorus deficiency stresses.

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Section: Introductionmentioning

confidence: 99%

Response of Carex breviculmis to phosphorus deficiency and drought stress

et al. 2023

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Root system architectural and growth responses of crop plants to mineral nutrition under moisture stress and its implications in drought tolerance

Bardhan

Parekh

Jena

et al. 2022

Climate Change and Crop Stress

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Yield stability of ten common bean (Phaseolus vulgaris L.) genotypes at different sowing dates in Lubumbashi, South-East of DR Congo

Tshibingu,

Tabu,

Lenge

et al. 2024

Open Agriculture

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The common bean is one of the most widely used sources of plant protein in the human diet in developing countries. Despite its importance, production remains relatively low and is likely to worsen as a result of climatic disturbances. In sub-Saharan Africa, rainfall is the most limiting climatic variable for bean production. Using the best genotypes and sowing dates has proven to be the best solution to overcome these constraints. Then, the aim of this study was to evaluate the performance and stability of common bean genotypes under different sowing dates in Lubumbashi agro-ecological conditions. The trial was carried out during two consecutive years using a split-plot design consisting of sowing date ‘main plot’ and genotype ‘sub-plots’, replicated three times. The results showed that 2020 had less rainfall than 2019 (774.2 and 812.6 mm, respectively). Significant interactions were observed between genotype and sowing date (E × G), year and genotype (G × Y), sowing date and year (E × Y), and genotype, sowing date and year (E × G × Y). Higher phenotypic variation for yield (184313.5) than genotypic variation (95524.2) as well as for the other observed traits. High heritability for the trait day at flowering (JFL) (0.7) and low heritability (0.1) for plant height (HP.28.JAS) and 0.5 for yield, highlighting the influence of environmental factors (sowing date). The GGE biplot identified genotypes V8 (1,178 kg ha−1) and V9 (985 kg ha−1) as the best performing and most stable genotypes, compared to genotypes V2 (650.4 kg−1) and V5 (646.3 kg ha−1), which were stable but less successful. The most favorable environments were identified as E8, E4, and E5. Despite the climatic disturbances, some common bean genotypes show good plasticity, and using them would increase production, which depends not only on the potential of the genotype but also on the time of sowing.

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Response of Common Bean Genotypes Grown in Soil with Normal or Limited Moisture, with Special Reference to the Nutrient Phosphorus

Cited by 3 publications

References 17 publications

Response of Carex breviculmis to phosphorus deficiency and drought stress

Response of Carex breviculmis to phosphorus deficiency and drought stress

Root system architectural and growth responses of crop plants to mineral nutrition under moisture stress and its implications in drought tolerance

Yield stability of ten common bean (Phaseolus vulgaris L.) genotypes at different sowing dates in Lubumbashi, South-East of DR Congo

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