Indicadores fisiológicos da interação entre deficit hídrico e acidez do solo em cana-de-açúcar

Carlin, Samira Domingues; Santos, Durvalina Maria Mathias dos

doi:10.1590/s0100-204x2009000900006

Cited by 22 publications

(27 citation statements)

References 23 publications

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“…Since water is a limiting factor for plant growth and fundamental for photosynthesis, crop yield depends on the available amount of this resource and on the efficiency of use by the plant, which can be aggravated when water availability conditions are associated with soil acidity (Carlin & Santos, 2009). Therefore, water availability in the soil is one of the environmental factors that most influence sugarcane production, since only 30% of its weight consists of dry matter and 70% is water, depending on the phenological stage (Rhein, 2012).…”

Section: Introductionmentioning

confidence: 99%

Yield of sugarcane submitted to nitrogen fertilization and water depths by subsurface drip irrigation

Cunha

Silva

Sousa

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TWater is limiting for growth and essential for photosynthesis. Crop yield depends on the available amount of this resource and on the efficiency of its use by the plant. This study aimed to evaluate the vegetative growth and the gross yield of sugar and ethanol from sugarcane along cane-plant and ratoon cane cultivation, under different irrigation depths for water replenishment, with and without nitrogen (N) application by subsurface drip irrigation. The experimental design was randomized blocks, analyzed in a split-plot scheme, with four replicates, in which the plots were represented by the interaction: irrigation depths (0, 25, 50, 75 and 100% water replenishment of the field capacity), with and without N fertigation, and subplots were represented by 9 evaluation periods (90, 120, 150, 180, 210, 240, 270, 300 and 330 days after planting/days after the first cutting for ratoon cane). The gross yields of sugar and alcohol for water replenishments below 93 and 97%, respectively, are higher in sugarcane of first year than in sugarcane of second year. Fertigation provided greater vegetative growth of ratoon cane.Rendimento da cana-de-açúcar submetida a adubação nitrogenada e a lâminas de irrigação por gotejamento subsuperficial R E S U M OA água é limitante para o crescimento e fundamental para a fotossíntese; a produtividade das plantas depende da quantidade disponível deste recurso e da eficiência de seu uso pelo vegetal. Com esse estudo objetivou-se avaliar o crescimento vegetativo e o rendimento bruto de açúcar e álcool da cana-de-açúcar ao longo do cultivo da cana-planta e cana-soca, em diferentes lâminas de reposição hídrica, com e sem aplicação de nitrogênio pelo sistema de irrigação por gotejamento subsuperficial. O delineamento experimental utilizado foi o de blocos ao acaso analisado em esquema de parcelas subdivididas, com quatro repetições, sendo a parcela representada pela interação das lâminas de irrigação (0, 25, 50, 75 e 100% de reposição hídrica, da capacidade de campo) com e sem fertirrigação nitrogenada e as subparcelas por nove épocas de avaliações (90, 120, 150, 180, 210, 240, 270, 300 e 330 dias depois do plantio/dias após o primeiro corte para a cana-soca). Os rendimentos brutos de açúcar e álcool para as reposições hídricas inferiores a 93 e 97% são, respectivamente, maiores em cana-planta que em cana-soca. A fertirrigação proporcionou maior crescimento vegetativo da cana-soca.

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Section: Introductionmentioning

confidence: 99%

Yield of sugarcane submitted to nitrogen fertilization and water depths by subsurface drip irrigation

Cunha

Silva

Sousa

et al. 2016

Rev. bras. eng. agríc. ambient.

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“…In plants under stress, proline content can increase up to 100 times, in comparison with that observed in plants cultivated under normal conditions (Verbruggen & Hermans, 2008). This accumulation is one of plants' main responses to hydric stress and is correlated with degree of tolerance (Carlin & Santos, 2009).That is reason why proline is the most studied osmoprotectant, due to its response sensitivity to adverse conditions (Abbas et al, 2014). Besides, alongside other compounds, it can act as a non-enzymatic antioxidant in the elimination of reactive oxygen species (ROSs) and inhibit damage caused by lipid peroxidation (Verbruggen & Hermans, 2008;Das & Roychoudhury, 2014).…”

Section: Introductionmentioning

confidence: 93%

“…Environmental stresses influence plant growth and cause lower performance in field cultivations (Carlin & Santos, 2009). Water deficit stands out among the numerous abiotic factors that most significantly reduce the performance of sugarcane plantations, which is the main cause of reductions in productivity Montesinos-Pereira et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Water deficit stands out among the numerous abiotic factors that most significantly reduce the performance of sugarcane plantations, which is the main cause of reductions in productivity Montesinos-Pereira et al, 2014). To deal with this problem, some papers (Carlin & Santos, 2009;Queiroz et al, 2011;Gimenez et al, 2013) on water deficit have been developed in the search for drought-tolerant cultivars. However, studies that address the topic are still needed to increase our understanding of plant mechanisms for adapting to adverse environments (Monteiro et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Other authors claim that proline metabolism leads to an increase in the quantity of ROSs in mitochondria, via the electron transport chain, which has an impact on the survival and death of cells in different species (Liang et al, 2013). Even though there is abundant literature on proline accumulation in plants under various types of stress (Carlin & Santos, 2009;Rhein et al, 2011;Gimenez et al, 2013;Das & Roychoudhury, 2014), it is not known for sure if this accumulation always occurs (Joseph et al, 2015), thus the constant research on the subject.…”

Section: Introductionmentioning

confidence: 99%

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Proline accumulation in sugarcane roots subjected to drought conditions

Vantini¹,

Carlin²,

Gimenez³

et al. 2016

Científica

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Osmoregulators in Hymenaea courbaril and Hymenaea stigonocarpa under water stress and rehydration

et al. 2017

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The objective of this work was to evaluate the effect of different water deficiency and rehydration levels on the concentrations of osmoregulators in two plant species (Hymenaea courbaril and H. Stigonocarpa) in the Amazon. We adopted a 2 9 5 9 5 factorial system, referring to 2 species (H. courbaril and H. stigonocarpa) and 5 stages of hydration and rehydration. The five hydration and rehydration stages were established in: (1) Control treatment E0; (2) Plants with 13 days of stress after incubation-E13; (3) Plants with 26 days of stress E26; (4) The plants that were established after 26 days after incubation and rehydrated for two days (RD2); (5) rehydrated for two days (RD4). The plants that were established after 26 days after incubation and rehydrated for four days. The experiment totaled fifty young plants with five replicates. Biochemical measurements were performed at the beginning of the experiment (E0) at 13 (E13) and 26 (E26) days after the water stress, in which the plants were rehydrated, repeating the analyses after two (RD2) and four (RD4) days. Both species increased the sucrose concentration by 18%, with a decrease of 52% in starch content. The RD4 time presented the highest mean starch concentration (0.19 mmol g -1 of the residue for H. courbaril and 0.27 mmol g -1 of residue for H. stigonocarpa). Increased proline concentrations were recorded for controls until RD2 for both species. For glycine betaine, the highest increases in treatments E26 and RD2 were observed for the H. courbaril species. Our rehydration period was not sufficient for total recovery of pre-stress concentrations of all studied solutes.

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Indicadores fisiológicos da interação entre deficit hídrico e acidez do solo em cana-de-açúcar

Cited by 22 publications

References 23 publications

Yield of sugarcane submitted to nitrogen fertilization and water depths by subsurface drip irrigation

Yield of sugarcane submitted to nitrogen fertilization and water depths by subsurface drip irrigation

Proline accumulation in sugarcane roots subjected to drought conditions

Osmoregulators in Hymenaea courbaril and Hymenaea stigonocarpa under water stress and rehydration

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