POTENTIAL OF PGPR AND NUTRIENT SOLUTION APPLICATION IN INCREASING PSB POPULATION DENSITY, P UPTAKE AND YIELD OF TOMATO (Solanum lycopersicum L.) PLANT IN A HYDROPONIC SYSTEM

Salinity toxicity and the post-stress restorative process were examined to identify the salt tolerance mechanism in tomato, with a focus on the antioxidant defense and glyoxalase systems. Hydroponically grown 15 day-old tomato plants (Solanum lycopersicum L. cv. Pusa Ruby) were treated with 150 and 250 mM NaCl for 4 days and subsequently grown in nutrient solution for a further 2 days to observe the post-stress responses. Under saline conditions, plants showed osmotic stress responses that included low leaf relative water content and high proline content. Salinity induced oxidative stress by the over-accumulation of reactive oxygen species (H2O2 and O2•−) and methylglyoxal. Salinity also impaired the non-enzymatic and enzymatic components of the antioxidant defense system. On the other hand, excessive Na+ uptake induced ionic stress which resulted in a lower content of other minerals (K+, Ca2+, and Mg2+), and a reduction in photosynthetic pigment synthesis and plant growth. After 2 days in the normal nutrient solution, the plants showed improvements in antioxidant and glyoxalase system activities, followed by improvements in plant growth, water balance, and chlorophyll synthesis. The antioxidant and glyoxalase systems worked in concert to scavenge toxic reactive oxygen species (ROS), thereby reducing lipid peroxidation and membrane damage. Taken together, these findings indicate that tomato plants can tolerate salinity and show rapid post-stress recovery by enhancement of their antioxidant defense and glyoxalase systems.

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Effect of Some Integrated Pest Management Elements on the Population Density of Bemisia Tabaci (Gennadius) (Hemiptera: Aleyrodidae) on Tomato Plants (Solanum Lycopersicum L.)

Alexandria Science Exchange Journal An International Quarterly Journal of Science Agricultural Environments ◽

10.21608/asejaiqjsae.2021.149092 ◽

2021 ◽

Vol 42 (1) ◽

pp. 57-68

Author(s):

Adnan Darwish ◽

Mohammed M. R. Attia ◽

Alaa M. H. Khozimy

Keyword(s):

Population Density ◽

Integrated Pest Management ◽

Pest Management ◽

Solanum Lycopersicum ◽

Bemisia Tabaci ◽

Tomato Plants ◽

Solanum Lycopersicum L

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Effect of Cl- and Na+ ratios in nutrient solutions on tomato (Solanum lycopersicum L.) yield in a hydroponic system

Revista Chapingo Serie Horticultura ◽

10.5154/r.rchsh.2021.01.001 ◽

2022 ◽

Vol 28 (1) ◽

Author(s):

Saúl Parra-Terraza ◽

◽

Azareel Angulo-Castro ◽

Pedro Sánchez-Peña ◽

José Benigno Valdéz-Torres ◽

...

Keyword(s):

Solanum Lycopersicum ◽

Nutrient Solution ◽

Dry Matter ◽

Dry Matter Production ◽

Sea Breezes ◽

Solanum Lycopersicum L ◽

Tomato Yield ◽

Matter Production ◽

Ionic Imbalance ◽

Percentage Ratio

Intensive tomato (Solanum lycopersicum L.) production in coastal areas of Sinaloa is exposed to significant amounts of Cl and Na deposited by sea breezes and irrigation water, which affects the yield of this vegetable. The aim of this study was to evaluate three percentage ratios of Cl-/anions (25/100, 50/100 and 75/100) and three percentage ratios of Na+/cations (25/100, 50/100 and 75/100) in the nutrient solution on mineral composition, dry matter production and yield of tomato. The experimental design was completely randomized with a 32 factorial arrangement and four replications. Analysis of variance and mean comparisons were performed (Tukey, P ≤ 0.05). Cl and Na concentrations in tomato leaves, stems and fruits increased significantly with increasing ratios of Cl-/anions and Na+/cations in the nutrient solution. The 75/100 Cl-/anions ratio reduced (P ≤ 0.05) the Ca concentration in leaves, while the 75/100 Na+/cations ratio decreased (P ≤ 0.05) K concentrations in leaves and stems. Both ratios reduced aerial dry biomass (48 and 25.8 %, respectively) and tomato yield (50.8 and 45.7 %, respectively). The results indicate that tomato plants grown with the 75/100 percentage ratio of Cl-/anions or the 75/100 percentage ratio of Na+/ cations absorb excessive amounts of Cl or Na, which causes ionic imbalance (especially of K+ and Ca2+) and affects dry matter production and yield.

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The Effect of EC Levels of Nutrient Solution on the Growth, Yield, and Quality of Tomatoes (Solanum Lycopersicum) under the Hydroponic System

Journal of Agricultural Engineering and Biotechnology ◽

10.18005/jaeb0201002 ◽

2014 ◽

pp. 7-12 ◽

Cited By ~ 5

Author(s):

R. A. Bustomi Rosadi ◽

Masateru Senge ◽

Diding Suhandy ◽

Ahmad Tusi

Keyword(s):

Solanum Lycopersicum ◽

Nutrient Solution ◽

Growth Yield ◽

Hydroponic System ◽

Yield And Quality

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Biological features of growing tomatoes in closed agroecosystems

E3S Web of Conferences ◽

10.1051/e3sconf/202128502012 ◽

2021 ◽

Vol 285 ◽

pp. 02012

Author(s):

Oksana Vershinina ◽

Inna Knyazeva ◽

Vladimir Gudimo

Keyword(s):

Succinic Acid ◽

Solanum Lycopersicum ◽

Nutrient Solution ◽

Fruit Weight ◽

Significant Rise ◽

Federal State ◽

Climatic Chamber ◽

Scientific Institution ◽

Biological Features ◽

Solanum Lycopersicum L

Researches were conducted in 2019-2020 in the department of closed artificial agroecosystems for plant growing on the basis of Federal State Budgetary Scientific Institution “Federal Scientific Agroengineering Center VIM”, Moscow. The object of the study was the seeds of tomatoes Solanum lycopersicum L. The aim of the research was to study the effect of a biostimulant (succinic acid) on biological characteristics and productivity of Solanum lycopersicum L. grown in the substrate hydroponics of a climatic chamber. As a result of conducted researches, there was identified the most effective method of using succinic acid as a biostimulator – inoculation of seeds, which contributed to an increase in yield with a significant rise in relation to the control – 64.1%. The average fruit weight in this variant was 114.1 g, which exceeds the control by 37.0%. The complex application of the biostimulator provided an increase in the average fruit weight in 18.6%, the addition of hydroponics to the nutrient solution is 4.1%.

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Evaluación de tres enraizadores comerciales en la producción de plántulas de tomate indeterminado (Solanum lycopersicum (L.) Lam)

RECUBRIMIENTO COMESTIBLE CON BASE DE PIÑON MEXICANO (Jatropha curcas) SOBRE LA CALIDAD DE CHAYOTE MINIMAMENTE PROCESADO ◽

10.32854/agrop.v12i9.1491 ◽

2019 ◽

Vol 12 (12) ◽

Author(s):

M. Arébalo-Madrigal ◽

J.L. Escalante-González ◽

J.B. Yáñez-Coutiño ◽

M.E. Gallegos-Castro

Keyword(s):

Solanum Lycopersicum ◽

Solanum Lycopersicum L

Objetivo: Evaluar el desarrollo de plántula de tomate indeterminado bajo condiciones protegidas, aplicando tres enraizadores y un testigo para aumentar la producción del cultivo en la región. Diseño/metodología/aproximación: se utilizó bajo un diseño experimental en bloques completamente al azar, el cual consistió de cuatro tratamientos correspondiendo a cada uno de los bloques, donde cada bloque pertenecía a cuatro charolas de unicel de 200 cavidades con sustrato de BM2, con cuatro repeticiones cada uno, teniendo 15 unidades experimentales por tratamiento, sumando un total de 60 unidades experimentales, teniendo un total de 240 plántulas de tomate por todo el experimento. Resultados: Como resultado se obtuvo que el enraizador de Phyto Root tuvo un gran efecto en cuanto al desarrollo de altura, grosor de tallo, numero de hojas, biomasa aérea y peso del cepellón, parámetros importantes que debe tener una plántula para su desarrollo y crecimiento al momento de trasplante a campo. Limitaciones del estudio/implicaciones: El manejo agronómico desde la siembra en charolas, es necesario que sea uniforme en todos los tratamientos y las repeticiones para tener mejores resultados en cuanto el efecto de los enraizadores. Hallazgos/conclusiones: Para obtener plántulas de buena calidad en el momento de trasplante a campo se le recomienda a la empresa y a los productores de plántulas utilizar el tratamiento de Phyto Root, ya que fue la que mejor respuesta tuvo.

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