Efeitos de rizobactérias e substratos na qualidade fisiológica de sementes de alface

Bernardino, Dayana Lúcia Mota Pinheiro; David, Andréia Márcia Santos de Souza; Figueiredo, Josiane Cantuária; Cangussú, Lucas Vinícius de Souza; Silva, Cleisson Dener da; Ribeiro, Regina Cássia Ferreira

doi:10.19084/rca17235

Cited by 4 publications

(3 citation statements)

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“…This substrate has greater water retention due to its manure composition, which is the main source of organic matter, potentially favoring germination in some species. Moreover, organic matter improves the physical, chemical, and biological properties of the soil (Bernardino et al 2018). However, due to its rich organic matter composition, it may cause seed deterioration for some species, as verified in this study.…”

Section: Experiments Ii: Germination Of Seeds On Different Substrates...supporting

confidence: 65%

Luminosity, temperature, and substrates on the germination of Solanum capsicoides

Baptista

Alexandre²,

Lima³

et al. 2022

Biosci. J.

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Solanum capsicoides, commonly known as red soda apple, is a little-studied species with phytotherapeutic characteristics of interest to the pharmaceutical industry. However, little is known about its agronomic characteristics. Therefore, this study aimed to assess the effect of light, different temperatures, and substrates on the germination of S. capsicoides seeds. The study consisted of two experiments: Experiment I - Germination of S. capsicoides seeds under different wavelengths. The seeds were kept on Petri dishes covered with Germitest™ paper moistened with distilled water and exposed to the monochromatic, red, far-red, and dark wavelengths. The experiment was performed in a completely randomized design with four replications of 25 seeds. Experiment II - Germination of S. capsicoides seeds on different substrates and at different temperatures. The seeds were distributed according to six substrates: paper roll, on paper, between sand, on sand, on soil + sand + manure, and between soil + sand + manure. The seeds were also subjected to the constant temperatures of 20, 25, 30, and 35 °C and the alternate temperatures of 20-30, 20-35, 25-30, and 25-35 °C, characterizing a 6 x 8 factorial arrangement. Germination rate, germination speed index, and mean germination time were evaluated. Red soda apple seeds are classified as positive photoblastic, with the highest germination rate occurring at the temperature of 20-35 °C combined with on paper, paper roll, on sand, and between sand substrates.

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Section: Experiments Ii: Germination Of Seeds On Different Substrates...supporting

confidence: 65%

Luminosity, temperature, and substrates on the germination of Solanum capsicoides

Baptista

Alexandre²,

Lima³

et al. 2022

Biosci. J.

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“…Planting fertilization, performed one week before the seedlings were transplanted, consisted of supplying 22 g of simple superphosphate and 10 g of potassium sulfate (Bernadino, 2016). Topdressing fertilizations consisted of biweekly installments for nitrogen and potassium (urea and potassium sulfate), and the micronutrients were applied in top-dressing and in installments, at 30, 60 and 90 days.…”

Section: Methodsmentioning

confidence: 99%

Effect of Nitrogen Fertilization Associated With Water-Retaining Gel on Lettuce Seed Quality at Different Moisture Levels

Soares¹,

David²,

BATISTA³

et al. 2023

AJMBES

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The objective of this study was to evaluate the efficiency of nitrogen fertilization associated with water-retaining as to the quality of lettuce seeds at different moisture levels. The experimental design used was composed of randomized blocks, in a 2 x 5 + 1 factorial scheme, with two moisture levels (50 and 75% field capacity) and five doses of nitrogen (0, 25, 50, 100 and 200 kg ha-1, with the addition of water-retaining gel, besides an additional treatment, without gel addition, with moisture at a level of 100% field capacity and standard nitrogen fertilization (100 kg ha-1), which will consist of the control treatment, with five replications. The analyzed variables were: water content, germination, germination speed index, electrical conductivity, and accelerated aging. The evaluated factors showed no significant interaction, for most of the analyzed variables, with the exception of the germination speed index. For germination, there was significant effect for the ‘levels of moisture in the substrate’ factor. Comparing the means of the treatments with the control, for electrical conductivity, all treatments had lower EC values, which indicate better vigor. It is concluded that using water-retaining gel associated with nitrogen fertilization allows the use of lower levels of moisture in the substrate (50%), without affecting the quality of the produced seeds. N doses fr

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“…Ademais, o inóculo pode permanecer dormente no solo, até ser ativado pelas raízes. O uso desse método é eficaz em alface quando inoculada com Bacillus pumilus (Bernardino et al, 2018), Pseudomonas fluorescens e Burkholderia pyrrocinia (Cardoso et al, 2019); em oliveira inoculada com Pseudomonas sp. e Paenibacillus (Costa & Melloni, 2019); e em arroz tratado com Azospirillum brasilense (Sales et al, 2021).…”

Section: Inoculação Na Sementeunclassified

Biotecnologia microbiana: inoculação, mecanismos de ação e benefícios às plantas

Lopes

Santiago

Silva

et al. 2021

RSD

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O uso de microrganismos está sendo aderido globalmente como uma alternativa biotecnológica para otimizar a produtividade vegetal de forma sustentável, atenuando o uso de produtos químicos e os impactos ambientais. Inoculantes microbianos, como as rizobactérias (Plant growth-promoting rizhobacteria - PGPR), micorrizas e fungos, combinados ou separados, podem ser inoculados em sementes, raízes, solo ou folhas. Microrganismos promotores do crescimento de plantas (Plant growth-promoting microbes - PGPM) atuam de forma direta como bioestimulantes e biofertilizantes; e de forma indireta como agentes de biocontrole. Essa biotecnologia microbiana é benéfica pois acelera o crescimento vegetal, incrementa a produtividade e a qualidade nutricional dos alimentos, além de aumentar a resistência das plantas contra estresses bióticos e abióticos. Portanto, considerando o potencial dos microrganismos como biopromotores de crescimento vegetal, conhecer sobre a interação desses com as plantas resultará em maior sucesso do uso da biotecnologia microbiana. Assim, essa revisão tem por objetivo abordar como os métodos de inoculação podem interferir no efeito benéfico do PGPM às plantas. Além de elucidar quais os mecanismos e benefícios do uso da biotecnologia microbiana ao vegetal.

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Efeitos de rizobactérias e substratos na qualidade fisiológica de sementes de alface

Cited by 4 publications

References 0 publications

Luminosity, temperature, and substrates on the germination of Solanum capsicoides

Luminosity, temperature, and substrates on the germination of Solanum capsicoides

Effect of Nitrogen Fertilization Associated With Water-Retaining Gel on Lettuce Seed Quality at Different Moisture Levels

Biotecnologia microbiana: inoculação, mecanismos de ação e benefícios às plantas

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