Mecanismos fisiológicos em híbridos de citros sob estresse salino em cultivo hidropônico

Silva, Luderlândio de Andrade; Brito, Marcos Eric Barbosa; Sá, Francisco Vaniés da Silva; Moreira, Rômulo Carantino Lucena; Filho, Walter dos Santos Soares; Fernandes, Pedro Dantas

doi:10.1590/1807-1929/agriambi.v18nsupps1-s7

Cited by 50 publications

(67 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This fact indicates that the increase in salinity did not stimulate the increase in the enzyme chlorophyllase, responsible for the degradation of chlorophyll or, possible, due to the higher efficiency of the carotenoids of this genotype to protect the chlorophyll molecules from the action of the chlorophyllase (Taiz & Zaiger, 2013), since the LVK also showed the highest contents of carotenoids among the genotypes. This behavior can be explained by the tolerance of the genotype, which expresses a mechanism that stimulates the increase in photosynthetic rate in order to escape from the effects of the salt stress (Silva et al, 2014). Therefore, for the increase in photosynthesis to occur, there must be an increment in the number of electron acceptors (chlorophyll) combined with the increase in their activity (Taiz & Zaiger, 2013).…”

Section: Resultsmentioning

confidence: 99%

“…The alternative hydroponic system for the production of citrus seedlings was made using 2-L PET bottles, adopting the basic principles of the Leonard pots system proposed by Silva et al (2014), interconnected in a system of communicating pots, through pipes. Each block was composed of 40 pots, of which 20 were interconnected to a tank of storage and distribution of the nutrient solution, for each salinity level under study.…”

Section: Methodsmentioning

confidence: 99%

“…However, the identification of materials tolerant to salinity is hampered by the large variations between species and inside the same species, since the tolerance to salinity is controlled by more than one gene and influenced by environmental factors (Syvertsen & García-Sánchez, 2014). Therefore, more-accurate evaluations that explain the physiological behavior and the expression of tolerance mechanisms of the studied materials are necessary (Habibi & Amiri, 2013;Silva et al, 2014). Thus, this study aimed to evaluate the biochemical components and phytomass accumulation of citrus genotypes under salt stress, applied during the rootstock formation stage.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Biochemical components and dry matter of lemon and mandarin hybrids under salt stress

Sá

Brito

Figueiredo

et al. 2017

Rev. bras. eng. agríc. ambient.

Self Cite

View full text Add to dashboard Cite

The objective was to study the biochemical changes and dry matter content in lemon and mandarin hybrids under salt stress during rootstock formation. For this, a study was conducted in randomized complete block, using a 2 x 5 factorial scheme, with two salinity levels (0.3 and 4.0 dS m-1) applied in five citrus rootstock genotypes (1. TSKC x CTARG - 019; 2. LRF; 3. TSKC x (LCR x TR) - 040; 4. LCRSTC and 5. LVK), with three replicates and four plants per plot. At 90 days after sowing, saline treatments started to be applied and continued until 120 days after sowing, the moment in which the plants were collected for evaluation of biochemical characteristics and phytomass accumulation. The increase in water salinity negatively affected the biochemical components and dry matter accumulation of citrus genotypes. The genotypes TSKC x (LCR x TR) - 040, LCRSTC and LVK were the least affected by salt stress, standing out as the materials most tolerant to salinity.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Biochemical components and dry matter of lemon and mandarin hybrids under salt stress

Sá

Brito

Figueiredo

et al. 2017

Rev. bras. eng. agríc. ambient.

Self Cite

View full text Add to dashboard Cite

show abstract

“…One of the key factors for the development of citrus is the rootstock because it is the basis of orchards and affect all the planting cycle (RESENDE et al, 2010 Thus, the challenge to expand irrigated agriculture in regions with scarcity of water is concentrated on selecting genetic materials with a satisfactory production; that is, a production equivalent to that obtained when there are no physiological disorders in the production system from irrigation with a high-salt content water, using the ability to adapt to salt stress (BRITO et al, 2014a;Silva et al, 2014). Importantly, the main mechanisms of tolerance to salt in citrus plants are related to the exclusion of salts by roots, to the accumulation of salts in old leaves and to the reduction of transpiration capacity (BALAL et al, 2012;RODRIGUEZ-GAMIR et al, 2012;GONZÁLEZ;ETXEBERRIA, 2012;SILVA et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Growth and physiology of citrus rootstocks under salt stress

Sá¹,

Brito²,

Moreira³

et al. 2018

Biosci. J.

View full text Add to dashboard Cite

ABSTRACT:In order to study the growth and physiology of citrus rootstocks under saline water irrigation, during formation of rootstocks, an assay was carried out in a factorial scheme, 2 x 6, corresponding to two levels of salinity of the nutrient solution: 0.3 and 4.0 dS m -1 and six genotypes provided by the Citrus Breeding Program of Embrapa Cassava & Fruits-CBP, distributed in randomized block design with three replications. The genotypes were:

show abstract

“…Higher values reduce plant growth and cause physiological alterations (Silva et al, 2014) due to water stress, specific ionic toxicity and ion imbalance (Habibi & Amiri, 2013).…”

Section: Introductionmentioning

confidence: 99%

Quantum efficiency of photosystem II and production of orange under salt stress and nitrogen fertilization

Sousa

Gheyi

Brito

et al. 2016

Rev. bras. eng. agríc. ambient.

Self Cite

View full text Add to dashboard Cite

A B S T R A C TThis study aimed to evaluate the salt tolerance of 'Mimo do Céu' orange grafted onto three rootstocks using physiological parameters such as maximum quantum efficiency of photosystem II (PSII) and the production of fruits. It also evaluated the effectiveness of increased nitrogen (N) fertilization in reducing the effects of salt stress. Two concomitant experiments were carried out under controlled conditions, using drainage lysimeters. The Experiment I evaluated the effects of the application of five levels of saline water on three combinations of scion-rootstocks grafted with 'Mimo de Ceu' orange, in a randomized block design with three replicates in a 5 x 3 factorial scheme. The Experiment II evaluated the application of two N levels (100 and 200% of recommendation) in three scion-rootstock combinations irrigated with water of electrical conductivity of 3.0 dS m -1 , in a 3 x 2 factorial scheme, with three replicates. The maximum quantum efficiency of PSII was inhibited in citrus plants under salt stress. 'Mimo do Ceu' orange grafted onto 'Common' Rangpur lime has higher yield potential. The increase in N dose did not reduce the deleterious effects of water salinity on fruit production.Eficiência quântica do fotossistema II e produção de laranjeira sob estresse salino e adubação nitrogenada R E S U M O Objetivou-se, com este trabalho, avaliar a tolerância ao estresse salino da laranjeira 'Mimo do Céu' enxertada em três porta-enxertos utilizando como parâmetros fisiológicos, a eficiência quântica do fotossistema II e a produção de frutos. Também se avaliou a eficiência máxima do incremento da adubação nitrogenada na redução dos efeitos do estresse salino; para tanto foram realizados dois experimentos concomitantes em condições controladas e com auxílio de lisímetros de drenagem. No Experimento I foram estudados em blocos casualizados com três repetições, em esquema fatorial 5 x 3, cinco níveis de salinidade da água e três combinações de copa/porta-enxerto e no Experimento II estudou-se a aplicação de duas doses de N (100 e 200% da recomendação) em plantas das três combinações de copa/porta-enxerto irrigadas com águas de condutividade elétrica de 3,0 dS m -1 , em esquema fatorial 3 x 2 com três repetições. A eficiência máxima quântica do PSII foi inibida nas plantas cítricas com estresse salino; já o aumento do teor salino da água de irrigação reduz a produção de frutos e a laranjeira 'Mimo do Céu' enxertada no Limoeiro Cravo 'Comum' possui maior potencial produtivo. O aumento na fertilização nitrogenada não reduziu os efeitos da salinidade sobre a produção total de frutos.

show abstract

Mecanismos fisiológicos em híbridos de citros sob estresse salino em cultivo hidropônico

Cited by 50 publications

References 19 publications

Biochemical components and dry matter of lemon and mandarin hybrids under salt stress

Biochemical components and dry matter of lemon and mandarin hybrids under salt stress

Growth and physiology of citrus rootstocks under salt stress

Quantum efficiency of photosystem II and production of orange under salt stress and nitrogen fertilization

Contact Info

Product

Resources

About