Effect of Deficit Irrigation on Yield and Quality of Eggplant

Darko, Ransford Opoku; Yuan, Shouqi; Sekyere, J.D. Owusu; Liu, Junping

doi:10.22161/ijeab.45.5

Cited by 9 publications

(4 citation statements)

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“…As found in the figure, crop yield and fruit parameters should be increased, and ET c , EC e and plant parameters should be decreased in order to increase WUE. The results are consistent with those reported by Demirel et al (2014), Serhat (2017) and Darko et al (2019), indicating the highest yield as well as the largest and the heaviest eggplant fruits in full irrigation strategy.…”

Section: Resultssupporting

confidence: 93%

Optimization of irrigation management and environmental assessment using the water cycle algorithm

Rafiee

Mahmoodi‐Eshkaftaki

2023

Soil Use and Management

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Obtaining high crop yields with limited water consumption requires optimal irrigation strategies based on comprehensive studies of the parameters of plant–environment interactions. Here, we used a structural equation modelling (SEM) to assess the relationships among input irrigation factors and moderate factors to find an optimum water use efficiency (WUE) response factor, for outdoor and greenhouse cultivation of eggplant (Solanum melongena). The input irrigation factors (including irrigation interval, water salinity and environment) and the moderate factors (evapotranspiration, soil salinity, plant parameters, fruit parameters and crop yield) were used in water cycle algorithm (WCA) and genetic algorithm (GA) methods to optimize the water use efficiency. The optimization process included finding the best combination of irrigation factors and optimized eggplant cultivation. The structural equation modelling results indicate that irrigation interval negatively affected water use efficiency with a more dominant effect on plant parameters. Water salinity negatively affected the water use efficiency with a more dominant effect on soil salinity, crop yield and fruit parameters. Low salinity water was more effective than full irrigation to optimize the water use efficiency. The water cycle algorithm revealed that for outdoor cultivation, the optimal range of irrigation interval was 2–5 days and water salinity in the range of 0.8–2.2 ds/m. These factors optimized evapotranspiration (346.23–738.19 mm), soil salinity (4.16–9.45 ds/m), fruit parameters (33.81–35.12 cm) and crop yield (1715.7–2190.8 g/plant), as well as increasing the water use efficiency (3.08–4.89 g/(plant‐mm)). Both the water cycle algorithm and genetic algorithm yielded very close to optimal values. Two years of repeated experiments and the closeness of the optimal values using the algorithms confirmed that the optimal amounts are reliable.

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Section: Resultssupporting

confidence: 93%

Optimization of irrigation management and environmental assessment using the water cycle algorithm

Rafiee

Mahmoodi‐Eshkaftaki

2023

Soil Use and Management

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“…The maintenance of the quality of the fruit has been associated with more tolerant genotypes [50,51]. In this work, all genotypes showed a similar tolerance to salt, probably due to the moderate stress applied.…”

Section: Discussionsupporting

confidence: 53%

Internal Fruit Quality Is Maintained in Eggplant under Mild Long-Term Salt Treatment

Ortega-Albero,

Adalid-Martínez,

Castell-Zeising

et al. 2024

Agriculture

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Modern Solanum melongena varieties have been developed to improve the content of phenolics, sugars, and nutritionally relevant minerals in fruit. However, fruit composition might be altered due to abiotic stresses like salinity. Physiological and fruit quality traits were evaluated in four eggplant landraces under usual irrigation and moderately salty irrigation conditions (80 mM NaCl). Growing parameters measured included root length, leaf surface, and fresh weight, while fruit composition traits included sugars, phenolics, and mineral content determinations. Few differences were observed for agronomic traits, probably due to the mild tolerance of eggplant to salinity. Some varieties showed signs of salt tolerance like an increase in primary root length to overcome salt stress. Glucose was the metabolite more affected by the salt treatment in the fruit, while phenolic compounds and other metabolites studied were not altered. Significant differences were observed in the main minerals Na, K, Ca, P, and Mg, both between genotypes and treatments. Although salinity produced changes in some physiological and developmental traits, the composition of the fruit was not significantly modified for the accessions tested. Mineral, sugar, and phenolic contents were not particularly altered in unripe fruits, indicating tolerance of eggplant varieties to salinity in terms of fruit quality.

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“…Despite its economic importance, compared to other important vegetable crops, fewer efforts have been devoted to its genetic improvement [ 5 ]. Although eggplant is moderately tolerant to drought compared to other Solanaceae [ 6 ], water deficit can cause severe yield losses and affect fruit quality [ 7 , 8 ]; therefore, increasing its drought tolerance is a significant breeding objective in a scenario of climate change [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Transgressive Biochemical Response to Water Stress in Interspecific Eggplant Hybrids

González-Orenga

Plazas

Ribera

et al. 2023

Plants

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In a climate change scenario, crop tolerance to drought must be urgently improved, as it represents an increasingly critical stress reducing agricultural yields worldwide. Although most crops are relatively sensitive to water stress, many of their wild relatives are more tolerant and may be used to improve drought tolerance in our crops. In this study, the response to drought of eggplant (Solanum melongena), its close wild relatives S. insanum and S. incanum and their interspecific hybrids with S. melongena was assessed. The plants were subjected to two treatments for 18 days: control, with irrigation every four days, and drought, with complete interruption of irrigation. Morphological and biomass traits were measured, and physiological and biochemical responses were analysed using stress biomarkers such as proline, flavonoids, and total phenolic compounds. Oxidative stress was quantified by measuring malondialdehyde (MDA) content. As a result of the drought treatment, plant development and tissue water content were seriously affected. Generally, water deficit also caused significant increases in MDA, proline, flavonoids, and total phenolics compounds. Our results comparing parental accessions reveal a better response to drought in one of the S. insanum accessions. The hybrid between S. melongena and S. incanum displayed a better response than the other hybrids and even its parents. The results obtained here might be helpful for future eggplant breeding programmes aimed at improving drought tolerance.

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Effect of Deficit Irrigation on Yield and Quality of Eggplant

Cited by 9 publications

References 0 publications

Optimization of irrigation management and environmental assessment using the water cycle algorithm

Optimization of irrigation management and environmental assessment using the water cycle algorithm

Internal Fruit Quality Is Maintained in Eggplant under Mild Long-Term Salt Treatment

Transgressive Biochemical Response to Water Stress in Interspecific Eggplant Hybrids

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