Lettuce Growth in Different Pot Volumes and Irrigation Frequencies Under Saline Stress

Targino, Ana Jacqueline de Oliveira; Oliveira, Francisco de Assis de; Oliveira, Mychelle Karla Teixeira de; Régis, Lúcia R. de L.; Neta, Helena M. de Morais; Cordeiro, C. J. X.; Alves, F. A. T.; Nascimento, Luan Vítor; Pessoa, Victor Gurgel; Oliveira, Antônio A. A. de; Souza, Maria Williane de Lima; Menezes, Paulo Victor de; Costa, Jessilanne P. B. de M.; Marques, Isabelly Cristina da Silva; Freitas, Rafaelle da Silva

doi:10.5539/jas.v11n3p494

Cited by 5 publications

(3 citation statements)

References 28 publications

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“…The determined DM content (from 5.0 to 5.8%) can be considered normal for lettuce. − The earliest studies determined both lower and also higher content of DM in lettuce. The RWC is an important indicator of water status in plants, which reflects the balance between water supply to the leaf tissue and transpiration rate .…”

Section: Results and Discussionmentioning

confidence: 99%

Transformation of Indole-3-butyric Acid into Ionic Liquids as a Sustainable Strategy Leading to Highly Efficient Plant Growth Stimulators

Kaczmarek

Kleiber

Liu

et al. 2020

ACS Sustainable Chem. Eng.

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Phytohormones are chemical substances that regulate plants growth, reproductive processes, longevity, development, and even death. One of the most common representatives of this group is indole-3-butyric acid (IBA), which is widely applied in various branches of agriculture. Taking into consideration that the conversion of conventional herbicides into ionic liquids leads to the enhancement of their biological activity, we decided to implement the same strategy for selected phytohormone. Hence, we synthesized a homologous series comprising alkylated choline cations and indole-3-butyrate anions. The new biobased ionic liquids (ILs) were characterized in terms of physicochemical properties (thermal stability, phase transitions, solubility, surface activity, density, and viscosity) and susceptibility to biodegradation according to the OECD 301 F test. Subsequently, their activity as a growth stimulator was evaluated for butterhead lettuce (Lactuca sativa L.) as a test plant. Additionally, the nutrient assimilation by the test plants was analyzed. The study revealed that the IL containing cations with octyl groups, at the optimal concentration of 0.5 ppm, enhanced lettuce biomass production by approximately 21% compared to that of the control. Moreover, the lettuce was enriched with valuable micro- and macroelements, such as P, K, Ca, Mg, Na, and Mn. These findings comply well with the concept of sustainable agriculture focused on utilizing environmentally friendly compounds derived from sources of natural origin while exhibiting enhanced efficacy.

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Section: Results and Discussionmentioning

confidence: 99%

Transformation of Indole-3-butyric Acid into Ionic Liquids as a Sustainable Strategy Leading to Highly Efficient Plant Growth Stimulators

Kaczmarek

Kleiber

Liu

et al. 2020

ACS Sustainable Chem. Eng.

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“…Specific leaf area is related to the relationship between leaf size and mass and is reflected in leaf blade thickness (Targino et al, 2019). The rates of cell elongation and division depend directly on the cell wall extensibility process; therefore, the immediate response of plants to salinity is a reduction in cell expansion (Parida & Das, 2005).…”

Section: Resultsmentioning

confidence: 99%

Semi-hydroponic cultivation of fertigated curly lettuce with calcium nitrate-enriched saline solutions

Pessoa

Neta

Oliveira

et al. 2023

Rev. bras. eng. agríc. ambient.

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Lettuce is a leafy vegetable sensitive to salinity, and under saline stress conditions it presents nutritional imbalance, mainly in calcium absorption. Thus, the objective was to evaluate the effect of enriching the nutrient solution with calcium nitrate in solutions prepared with saline water in the lettuce crop. A completely randomized design was used, with five treatments and four replicates. The treatments were represented by five nutrient solutions [S1 - standard nutrient solution (SNP); S2 - SNP + NaCl (3.5 dS m-1); S3 - S2 + Ca (NO3)2 (50% = 6.86 mmol L-1); S4 - S2 + Ca(NO3)2 (100% = 9.15 mmol L-1); S5 - S2 + Ca(NO3)2 (150% = 11.43 mmol L-1)] in lettuce from the curly group, cv. Elba. After preparing the nutrient solutions, the solutions had the following electrical conductivities: 1.8 (S1); 4.8 (S2); 5.4 (S3); 6.0 (S4); 6.6 (S5) dS m-1. Variables of growth, nutrition and postharvest quality of lettuce were evaluated. With the exception of stem diameter, number of total leaves, plant pH and vitamin C content, the other variables were affected by the extra addition of Ca(NO3)2 in the nutrient solutions. The lettuce cv Elba grown in coconut fiber is tolerant to the salinity of 4.8 dS m-1 (S2). In conditions where the use of saline water with 3.5 dS m-1 for the preparation of the nutrient solution is unavoidable, the use of extra doses of Ca(NO3)2 in the lettuce crop is not recommended.

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“…Besides that, stem diameter is of major importance in lettuce, especially for fast food industry, because, as leaves are manually separated for later slicing, the thicker the stem the faster it is separated, increasing industrial output (Targino et al, 2019).…”

Section: Methodsmentioning

confidence: 99%

Genetic dissimilarity between biofortified lettuce genotypes for leaf carotenoid levels

et al. 2020

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Lettuce is the main leafy vegetable, presenting the highest consumption and economic importance in the world. In the recent decades, concerns about vitamin A deficiency have led Brazilian researchers to develop cultivars with higher levels of carotenoids provitamin A. Therefore the experiment aimed to verify the genetic dissimilarity of biofortified lettuce genotypes, investigating the correlation between agronomic characteristics and the potential for use to increase the carotenoid content in future breeding programs. Ninety one genotypes were evaluated, with 86 lettuce strains from hybridization between cultivars Pira 72 versus Uberlândia 10000 (rich in carotenoids) followed by three successive self-fertilizations and 5 commercial cultivars (Grand Rapids; UFU MC BIOFORT1; Pira 72; Uberlândia 10000 and Robusta).During the course of the trial, were evaluated characteristics as chlorophyll content of the leaves, plant diameter, stem diameter and the number of leaves per plant were counted. Genetic diversity was represented by a dendrogram that was obtained using the hierarchical method of UPGMA and the optimization method of Tocher. There is genetic divergence between the lettuce genotypes analyzed, and the carotenoid content character contributed most significantly to the divergence between the evaluated genotypes. The UFU215#12 genotypes; UFU215#14; UFU215#2; UFU 215#1; UFU215#4; UFU199#3 and UFU199#2 have good agronomic characteristics and high levels of carotenoids, being promising to continue the biofortified lettuce breeding program, aiming to obtain new cultivars rich in carotenoids pro vitamin A.

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Lettuce Growth in Different Pot Volumes and Irrigation Frequencies Under Saline Stress

Cited by 5 publications

References 28 publications

Transformation of Indole-3-butyric Acid into Ionic Liquids as a Sustainable Strategy Leading to Highly Efficient Plant Growth Stimulators

Transformation of Indole-3-butyric Acid into Ionic Liquids as a Sustainable Strategy Leading to Highly Efficient Plant Growth Stimulators

Semi-hydroponic cultivation of fertigated curly lettuce with calcium nitrate-enriched saline solutions

Genetic dissimilarity between biofortified lettuce genotypes for leaf carotenoid levels

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