Osmorreguladores em Plantas de Sorgo Sob Suspensão Hídrica e Diferentes Níveis de Silício

Souza, Luma Castro de; Siqueira, Jackeline Araújo Mota; Silva, Jonny Lucio de Sousa; Coelho, Carla Carolynne Resueno; Neves, Myriam Galvão; Neto, Cândido Ferreira de Oliveira

doi:10.18512/1980-6477/rbms.v12n3p240-249

Cited by 13 publications

(5 citation statements)

References 1 publication

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“…The fact that Si did not affect rice growth or grain yield may be attributed to the relative lack of biotic or abiotic stress in rice plants during the experiment. The benefits of Si to crops subjected to several stresses, such as drought (Souza et al, 2013;Moro et al, 2015), hypersalinity (Alves et al, 2014), and others, have been widely reported in literature.…”

Section: Plant Dry Matter and Grain Yieldmentioning

confidence: 99%

Effects of Soluble Silicate and Nanosilica Application on Rice Nutrition in an Oxisol

et al. 2018

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Section: Plant Dry Matter and Grain Yieldmentioning

confidence: 99%

Effects of Soluble Silicate and Nanosilica Application on Rice Nutrition in an Oxisol

et al. 2018

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“…O aumento de carboidratos nas plantas sob deficiência hídrica (Figura 4) ocorreu como forma de tolerar este estresse, ajustando-se osmoticamente a fim de manter a planta hidratada (SOUZA et al, 2013), onde parte dos carboidratos dispostos no citoplasma são utilizados na ativação dos mecanismos de tolerância a seca, independente do mecanismo em questão (LISAR et al, 2012). No entanto, esse aumento nas concentrações de carboidratos induziu a maior ação protetiva das biomembranas que podem ser degradadas nessa condição.…”

Section: Carboidratosunclassified

ECOFISIOLOGIA E METABOLISMO DO CARBONO EM PLANTAS DE Parkia pendula (Willd.) Benth. ex Walp SOB DEFICIÊNCIA HÍDRICA

Oliveira¹,

Silva²,

Lima³

et al. 2015

Enciclopédia Biosfera

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RESUMOO interesse agronômico despertado em relação à espécie Parkia pendula (Willd.) Benth. ex Walp. relaciona-se à sua característica de fixação simbiótica de nitrogênio e facilidade na composição de sistemas silvipastoris. O objetivo desse trabalho consistiu em caracterizar a ecofisiologia e metabolismo do carbono em plantas de visgueiro submetidas à deficiência hídrica. O delineamento foi inteiramente casualizado em duas condições hídricas: controle e deficiência hídrica, com 15 repetições, totalizando 30 unidades experimentais. A avaliação dos tratamentos foi realizada nos tempos 0 e 24 dias da imposição da deficiência hídrica. O conteúdo relativo de água nos tecidos foliares das plantas controle foi maior (80%) que os encontrados nas folhas das plantas sob deficiência (51%). As trocas gasosas e os pigmentos fotossintéticos apresentaram reduções significativas em suas taxas quando submetidos à deficiência hídrica. Ocorreu um aumento na concentração de carboidratos solúveis totais tanto nas raízes quanto nas folhas sob deficiência hídrica (raiz: 5 mmol/MS e folha: 7,5 mmol/MS) comparado às plantas controle (raízes: 1,5 mmol/MS e folha: 3,5 mmol/MS) e também nas concentrações de Sacarose nas raízes e nas folhas (raiz: 6,9 µmol.g -1 MS e folha: 15, µmol.g -1 MS) comparado às plantas controle (raízes: 4 µmol.g -1 MS e folha: 9 µmol.g -1 MS). A suspensão da irrigação, durante 24 dias, foi suficiente para alterar e provocar um decréscimo nas rotas metabólicas das plantas jovens de visgueiro. PALAVRAS-CHAVE: osmorreguladores, transpiração, visgueiro ECOPHYSIOLOGY AND CARBON METABOLISM IN PLANTS OF Parkia pendula (Willd.) Benth. ex Walp UNDER WATER DEFICITABSTRACT The agronomic interest aroused in relation to the Parkia pendula (Willd.) Benth. ex Walp. species relates to its symbiotic nitrogen fixation characteristics and ease in composition for silvopastoral systems. The objective of this work was to study ecophysiology and carbon metabolism in visgueiro plants subjected to water deficit. The experiment was conducted in a greenhouse in the Amazon Federal Rural University campus Capitão Poço, PA, Brasil. The lineation was completely

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“…However, in Brazil, there are limited studies on using silicon in sorghum crop management (Souza et al, 2011). Therefore, it is important to know water-deficit effects, in order to relate them to mechanisms providing tolerance in sorghum cultivation, such as silicon application, so the crop production is not adversely affected by water-deficit stress (Souza et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Application of multivariate analysis to evaluate the biochemical changes in sorghum (Sorghum bicolor L. Moench) after exposure to water stress and silicon applications

Luma¹,

Glauco²,

Risely³

et al. 2015

Afr. J. Biotechnol.

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The objective of the present work was to verify, through multivariate analysis, the behavior patterns of biochemical compounds in forage sorghum, submitted to different silicon applications and water stress. Experiment with forage sorghum (Sorghum bicolor L. Moench), variety BR 700, was conducted in a greenhouse. The experimental design was completely randomized in a 2×4 factorial arrangement with seven replicates, two hydric conditions (irrigated and water deficit) and four silicon applications (0.5, 1.0, 1.5 and 2.0 M). The multivariate analysis showed that when there is no shortage of water and regardless of the silicon dose, nitrate levels were higher and carbohydrate, proline and sucrose levels were lower in leaves and roots. The quantity of biochemical compounds differed between sorghum leaves and roots. This condition also varied according to the soil water stress. Silicon application in sorghum plants mitigates the negative effect of drought stress, favoring this crop cultivation in areas of low water availability. Nonetheless, differences between silicon doses were not observed in this experiment. Therefore, it is recommended that this chemical should be applied in drought-ridden areas.

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Osmorreguladores em Plantas de Sorgo Sob Suspensão Hídrica e Diferentes Níveis de Silício

Cited by 13 publications

References 1 publication

Effects of Soluble Silicate and Nanosilica Application on Rice Nutrition in an Oxisol

Effects of Soluble Silicate and Nanosilica Application on Rice Nutrition in an Oxisol

ECOFISIOLOGIA E METABOLISMO DO CARBONO EM PLANTAS DE Parkia pendula (Willd.) Benth. ex Walp SOB DEFICIÊNCIA HÍDRICA

Application of multivariate analysis to evaluate the biochemical changes in sorghum (Sorghum bicolor L. Moench) after exposure to water stress and silicon applications

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