Balanço hídrico e da salinidade do solo na bananeira irrigada com água de diferentes salinidades

Gondim, Ancélio Ricardo de Oliveira; Medeiros, José Francismar de; Levien, Sérgio Luís Aguilar; Carmo, Gilcimar Alves do; Senhor, Rosemberg Ferreira

doi:10.4025/actasciagron.v31i1.6600

Cited by 2 publications

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References 1 publication

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“…The banana is a fruit grown in all Brazilian states, from the coastal plain to the highlands of the interior, although there are restrictions on its cultivation due to such climatic factors as temperature and rainfall (GONDIM et al, 2009). However, despite these limitations, the banana is one of the most exploited fruits in tropical regions, being among the most consumed and important in the diet of the global population (COSTAet al, 2009), besides being a source of income for the population, and helping to maintain people in the countryside.…”

Section: Introductionmentioning

confidence: 99%

“…The climatic conditions of the Brazilian Northeast are favourable to the development and production of the crop throughout almost the entire area (GONDIM et al, 2009). However, productivity is still low in Brazil compared to other producing countries (SILVA et al, 2005), as there are various problems presented by the Brazilian banana crop which result in lower productivity and in fruit of low quality (COSTA et al, 2009); this is due to technologies which are available and suitable for exploitation of the crop not being used (MEDEIROS et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Influence of salinity on the development of the banana colonised by arbuscular mycorrhizal fungi

Almeida

Gomes

Filho

et al. 2016

Revista Ciência Agronômica

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Influence of salinity on the development of the banana colonised by arbuscular mycorrhizal fungi ABSTRACT -This study evaluated the effect of salt stress on the growth of banana seedling colonized with mycorrhizal fungi (AMF) on a substrate from a Quartzipsamment. The experiment was conducted in a greenhouse, using a completely randomized design in split plots; the plots had 5 levels of salinity in irrigation water (0.5, 1.5, 2.5, 3.5 and 4 5 dS m -1 ) and the subplots of four collection periods (40, 60, 80 and 100 days after transplanting), with 4 repetitions, totaling 80 experimental units. The seedlings of banana cv. "Prata" was produced by micropropagation and inoculated with arbuscular mycorrhizal and acclimatization for 40 days. Evaluations were made of leaf gas exchange, shoot dry mass, nutrient content, mycorrhizal root colonization and spore density. Increased levels of salinity caused reduction in dry matter production and photosynthetic rate, which may be associated with osmotic effects of salts in the soil, the increase in sodium and reduced the levels of N in leaves. Salinity reduced root mycorrhizal colonization, but did not influence the density of AMF spores under the conditions of this study. Key words: Musa ssp.. Arbuscular Mycorrhizal Fungi. Salt stress.RESUMO -Este trabalho teve o objetivo de avaliar o efeito do estresse salino no crescimento inicial de mudas de bananeiras colonizadas com fungos micorrízicos arbusculares (FMA) em um substrato proveniente de um Neossolo Quartzarênico. O experimento foi conduzido em casa de vegetação, utilizando-se delineamento inteiramente casualizado em parcelas subdivididas, sendo as parcelas representadas por cinco níveis de salinidade aplicados na água de irrigação (0,5; 1,5; 2,5; 3,5 e 4,5 dS m -1 ) e as subparcelas por quatro períodos de coleta (40; 60; 80 e 100 dias após transplantio das mudas), com quatro repetições, totalizando 80 unidades experimentais. As mudas de bananeira cv. "Prata" foram produzidas por micropropagação e inoculadas com FMA e passaram por um período de micorrização e aclimatação de 40 dias. Foram realizadas avaliações das trocas gasosas foliares, massa seca da parte aérea, teores de nutrientes, colonização micorrízica arbuscular e densidade de esporos. O aumento nos níveis de salinidade provocou redução na produção de matéria seca e na taxa fotossintética, o que pode estar associado aos efeitos osmóticos dos sais no solo, ao aumento nos teores de Na e a redução dos teores de N nas folhas. A salinidade reduziu a colonização micorrízica, porém não influenciou na densidade de esporos no substrato.Palavras-chave: Musa ssp.. Fungos micorrizicos arbusculares. Estresse salino.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of salinity on the development of the banana colonised by arbuscular mycorrhizal fungi

Almeida

Gomes

Filho

et al. 2016

Revista Ciência Agronômica

View full text Add to dashboard Cite

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“…In the first quarter of 2010, there was a long period of scarce rainfall, and in January and February, no precipitation was observed, followed by an atypical rainfall season for the region. It is known that the ideal percentage of water available in the soil for banana crop should not be less than 75% (GONDIM et al, 2009). Considering a precipitation between 100 and 180 mm desirable for the crop, it is verified that, except for the month of March, the values found during this work were lower than expected.…”

Section: Resultsmentioning

confidence: 99%

“…The methodology proposed by Heath and Packer (1968), with modifications (HODGES et al, 1999) was used. Quantification was performed from the malonic di-aldehyde (MDA) formed by the thiobarbituric acid reactive substances method (TBARS or TBA) (HALLIWELL; GUTTERIDGE, 1989). MDA content was expressed as ƞmol of dry mass MDA g -1 .…”

Section: Methodsmentioning

confidence: 99%

SENSITIVITY TO ENVIRONMENTAL STRESS OF PRATA,JAPIRA AND VITÓRIA BANANA CULTIVARS PROVEN BY CHLOROPHYLL a FLUORESCENCE

et al. 2017

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ABSTRACT-This study aimed to evaluate the physiological responses to environmental stress during pre-and post-harvest of the following banana cultivars: Prata (AAB), Japira (AAAB) and Vitoria (AAAB). Analyses were carried out on young plants at vegetative stage (daughter-plant) and adult plants at reproductive stage (motherplant). The experimental design was completely randomized. In the in vivo pre-harvest analysis were used seven replications, in a factorial scheme (3x2x2), three cultivars and two stages (vegetative and reproductive) and two collection periods (March and June). For the analysis of post-harvest quality were used five replications in a factorial design (3x2x5), corresponding to three cultivars, two development stages and five periods of post-harvest analysis, carried out every two days from stage 4 of fruit ripening. The chlorophyll a fluorescence emission kinetics showed low photochemical performance of the three cultivars in June, a period characterized by lower temperatures and water deficit. Prata was the cultivar with the lowest tolerance to abiotic physiological behavior changes, which also reflected in fruit quality, because there was a change in physical and physicochemical parameters. Japira and Vitoria cultivars showed similar physiological responses in the pre-and post-harvest periods, according to their phylogenetic proximity. The total performance index, i.e., the conservation of energy absorbed by PSII up to the reduction of the final PSI acceptors (PI total ) and the di-malonic aldehyde (MDA) content were significantly higher in Japira and Vitoria cultivars compared to Prata cultivar in the reproductive phase. There was no significant change in the potential quantum efficiency of PSII (F V / F M = jP 0 ) among the three cultivars. It was concluded that Japira and Vitoria cultivars showed greater plasticity to tolerate or even adapt to abiotic variations keeping higher fruit yield. PI total is the most sensitive parameter during the banana life cycle and important tool for distinguishing different cultivars yields. Index terms-Musa spp., Chlorophyll fluorescence, pigments, lipid peroxidation, post-harvest quality. SENSIBILIDADE AO ESTRESSE AMBIENTAL EM BANANEIRACOMPROVADA PELA FLUORESCÊNCIA DA CLOROFILA a RESUMO-Este trabalho objetivou avaliar as respostas fisiológicas ao estresse ambiental, durante a pré e a pós-colheita, das cultivares: Prata (AAB), Japira (AAAB) e Vitória (AAAB). As análises foram realizadas em plantas jovens, em estádio vegetativo (planta-filha) e em plantas adultas, em estádio reprodutivo (planta-mãe). O delineamento experimental foi inteiramente casualizado. Nas análises de pré-colheita, in vivo, utilizaram-se sete repetições, em esquema fatorial (3x2x2), três cultivares, dois estádios: vegetativo e reprodutivo e dois períodos de coleta (março e junho). Para a qualidade pós-colheita, utilizaram-se 5 repetições, em esquema fatorial (3x2x5), três cultivares, dois estádios de desenvolvimento e cinco períodos de análise, realizadas a cada dois dias a partir do es...

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Balanço hídrico e da salinidade do solo na bananeira irrigada com água de diferentes salinidades

Cited by 2 publications

References 1 publication

Influence of salinity on the development of the banana colonised by arbuscular mycorrhizal fungi

Influence of salinity on the development of the banana colonised by arbuscular mycorrhizal fungi

SENSITIVITY TO ENVIRONMENTAL STRESS OF PRATA,JAPIRA AND VITÓRIA BANANA CULTIVARS PROVEN BY CHLOROPHYLL a FLUORESCENCE

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