Respostas funcionais foliares de plantas jovens de &lt;i&gt;Hevea brasiliensis&lt;/i&gt; submetidas à deficiência hídrica e à reidratação

Nascimento, Nayara Fonseca do; Nascimento, Larissa Batista de Brito do; Gonçalves, José Francisco de Carvalho

doi:10.5902/1980509832658

Cited by 9 publications

(6 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to Nascimento, Nascimento and Gonçalves (2019), when a plant experiences low soil water availability, several metabolic processes can be influenced, resulting in the alteration of various physiological events such as stomatal closure with a consequent reduction in g s , A, and E, which leads to a decrease of growth rate; this sequence of events is consistent with the results obtained in this study.…”

Section: Medium Squaressupporting

confidence: 91%

“…However, the reduction in stomatal opening under limited water availability can be a strategy of apple trees to prevent an increase in E as well as to avoid embolism and cavitation in the xylem of plants (Nascimento;Nascimento;Gonçalves, 2019).…”

Section: Medium Squaresmentioning

confidence: 99%

“…Thus, given that water deficits affect multiple physiological processes in plants, studies on water relations in plants and interactions between water deficit effects and physiological processes are extremely important (Nascimento;Nascimento;Gonçalves, 2019). The responses of apple trees to water deficit include reductions in production, leaf area and stomatal opening (Jie et al, 2010), and these processes may result in the acceleration of leaf senescence and abscission (Taiz et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Physiological and biochemical responses of apple trees to irrigation water depth in a semiarid region of Brazil

et al. 2020

View full text Add to dashboard Cite

The present study evaluated the physiological and biochemical parameters of apple trees under different irrigation water depths in a semiarid region of Brazil. The experiment had a split-plot randomized block design. Irrigation levels (60, 80, 100, and 120% of the reference evapotranspiration - ET0) and two apple cultivars (Julieta and Princesa) were analysed in the experimental plots and the phenological stages (vegetative, flowering and fruiting) were analysed in the experimental subplots. The physiological characteristics evaluated included the chlorophyll index, relative water content, net photosynthesis, stomatal conductance, transpiration, internal CO2 concentration, leaf temperature and instant carboxylation efficiency. The biochemical characteristics evaluated included the leaf contents of reducing sugars, total soluble sugars, and non-reducing sugars and proteins. The best biochemical responses were observed in the Princesa cultivar under 80% ET0 during the flowering and vegetative stages and under 120% ET0 during the fruiting stage. The best physiological responses for all phenological stages were observed under irrigation levels of 120% ET0 for both cultivars. The cv. Princesa demonstrated osmotic adjustment under water stress conditions during the phenological stages evaluated.

show abstract

Section: Medium Squaressupporting

confidence: 91%

Section: Medium Squaresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Physiological and biochemical responses of apple trees to irrigation water depth in a semiarid region of Brazil

et al. 2020

View full text Add to dashboard Cite

show abstract

“…According to Krishna et al (1991), rubber seedlings have high assimilatory CO2 rates, even under high temperatures, due to their big cuticular transpiration. In this sense, this is what reinforces the performance of the RRIM 600 clone at higher temperatures, exactly the adaptability of this genotype to the dryer and warmer climates, resistant to water deficit (Nascimento et al 2019). In addition, it suggests that RRIM 600 showed a strong regulation of photosynthetic metabolism to maintain the difference between the water potential of the leaf and the constant potential of the soil in a dry atmosphere (Kumagai et al 2015).…”

Section: Discussionmentioning

confidence: 52%

Atmospheric evaporative demand and water deficit on the ecophysiology of Rubber seedlings

et al. 2022

View full text Add to dashboard Cite

The search for genetic materials resistant to adverse weather conditions has been a major focus in studies on species of economic interest. The objective of the present study was to assess the growth and photosynthesis of rubber seedlings clones under two conditions of atmospheric evaporative demand, characterized by fluctuations in temperature (TEMP) and vapor pressure deficit (VPD), associated to two water regimens. Hevea brasiliensis Muell. Arg (RRIM 600 and FX 3864) clones were assessed in two microclimates, at low (TEMP 21.2 ºC and VPD 0.29 Kpa) and high (TEMP 26.9 ºC and VPD 1.49 Kpa) atmospheric evaporative demand, under two water regimens: water deficit and well-watered. Water deficit 50% water availability was sufficient to reduce the net CO2 assimilation rate, leaf area and total chlorophyll of the clones studied that impacted growth in both microclimates. The effects of water deficit on growth and net carbon assimilation rate were intensified under high atmospheric evaporative demand. However, when comparing the two clones studied, RRIM 600 showed greater growth and photosynthesis without water restriction. The FX 3864 clone, despite the high CO2 assimilation values under high atmospheric demand and without water restriction, showed a reduced growth. The results of this study form an important basis for the selection of genotypes with the potential to develop in adverse climatic conditions. In this sense, the RRIM 600 genotype is recommended as a promising material that would best adapt under adverse climatic conditions.

show abstract

“…O gerenciamento e manejo racional da irrigação são importantes para a agricultura irrigada, por consistir na aplicação de técnicas que visam à determinação da demanda hídrica das culturas, as quais surgem para detectar o déficit hídrico (Lopes Sobrinho et al, 2019;Elhendawy et al, 2019). Por conseguinte, as metodologias mais indicadas conforme descritas pela literatura são aquelas que se baseiam na própria planta, por serem de maior eficiência quando comparadas as técnicas que fazem uso de fatores ambientais para indicação do déficit hídrico (Remorini e Massai, 2003;Nascimento;Nascimento;Gonçalves, 2019).…”

Section: Introductionunclassified

Técnicas de dendrometria no manejo da irrigação: uma revisão integrativa

Sobrinho

Silva

Santos

et al. 2020

RSD

View full text Add to dashboard Cite

A dendrometria como indicador para o manejo racional da irrigação ainda vem sendo pauta de discussões nos últimos tempos devido à busca pelo menor consumo hídrico e aumento da eficiência no uso da água pelas culturas agrícolas. Tendo em vista a carência de informações, a presente revisão integrativa teve por objetivo apresentar um estudo sobre as técnicas de dendrometria utilizadas no manejo da irrigação que visam à determinação do consumo hídrico das culturas. Realizou-se um estudo com a coleta de dados a partir de fontes, por meio da pesquisa bibliográfica e revisão integrativa, tendo como pergunta norteada: as técnicas de dendrometria no manejo da irrigação garantem maior eficiência do uso da água e produção agrícola com menor consumo hídrico? Essas técnicas são baseadas na própria planta com necessidade de precisão na estimativa dos dados gerados e saber interpretá-los tornando um grande desafio no uso da dendrometria. A partir da análise de dados secundários disponíveis na literatura, as técnicas de dentrometria refletem sobre as interações entre a quantidade de água disponível no solo para a planta e a demanda hídrica da atmosfera. Por conseguinte, essas técnicas e outras estão sendo analisadas visando alcançar melhor eficiência do uso da água e a maior produção agrícola com menor consumo hídrico.

show abstract

Respostas funcionais foliares de plantas jovens de <i>Hevea brasiliensis</i> submetidas à deficiência hídrica e à reidratação

Cited by 9 publications

References 20 publications

Physiological and biochemical responses of apple trees to irrigation water depth in a semiarid region of Brazil

Physiological and biochemical responses of apple trees to irrigation water depth in a semiarid region of Brazil

Atmospheric evaporative demand and water deficit on the ecophysiology of Rubber seedlings

Técnicas de dendrometria no manejo da irrigação: uma revisão integrativa

Contact Info

Product

Resources

About