Crescimento, morfologia radicular e liberação de compostos orgânicos por plântulas de soja em função da atividade de alumínio na solução do solo de campo natural

Nolla, Antônio; Schlindwein, Jairo André; Anghinoni, Ibanor

doi:10.1590/s0103-84782007000100016

Cited by 11 publications

(11 citation statements)

References 10 publications

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“…In the energetic metabolism, in the ATP molecule, P may become less soluble to the plants for binding to Al, forming aluminophosphate. The authors also reported reduction in the absorption and accumulation of P, Ca and Mg in plants sensitive to Al, Freitas et al (2006) in rice genotypes, Peixoto et al (2007) in sorghum and Nolla et al (2007) in the soybean crop.…”

Section: Resultsmentioning

confidence: 86%

Macronutrients accumulation and growth of pineapple cultivars submitted to aluminum stress

Mota

Pegoraro

Batista

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe objective was to determine the growth and accumulation of macronutrients of two pineapple cultivars submitted to different concentrations of aluminum (Al). For this, a study was conducted in plastic pots containing 4 L of nutrient solution, in a randomized block design, in a 2 x 5 factorial scheme, corresponding to two pineapple cultivars ('IAC Fantástico' and 'Vitória') and five Al concentrations (0, 21.6, 43.2, 64.8 and 86.4 mg of Al plant -1 ), with four replicates. The following variables were evaluated: root length, dry matter of root, stem and leaf, stem diameter, number of leaves, chlorophyll content and accumulation of macronutrients at 60 days after treatment. The cv. 'Vitória' showed a linear decrease in chlorophyll content, root dry matter, root length and accumulation of N, P, K, Ca and Mg in most plant components promoted by the increase of Al concentration in the nutrient solution. The cv. 'IAC Fantástico' had lower total dry matter, stem dry matter, stem diameter and accumulation of N, Ca and Mg. However, the evaluated characteristics were not influenced by the increase of Al concentration, showing greater tolerance of this cultivar to Al in nutrient solution.Acúmulo de macronutrientes e crescimento de cultivares de abacaxizeiros submetidos ao estresse por alumínio R E S U M O Objetivou-se, neste trabalho, determinar o crescimento e o acúmulo de macronutrientes de duas cultivares de abacaxi submetido a diferentes concentrações de alumínio; para isto foi realizado um estudo com vasos de plástico contendo quatro litros de solução nutritiva e utilizado o delineamento em blocos casualizados em esquema fatorial 2 x 5 sendo duas cultivares de abacaxi (IAC Fantástico e Vitória) cinco concentrações de alumínio (0, 21,6; 43,2; 64,8 e 86,4 mg de Al planta -1 ) e quatro repetições. Foram avaliados o comprimento de raiz, a matéria seca da raiz, o talo e as folhas, diâmetro do talo, emissão de folhas, teor de clorofila e acúmulo de macronutrientes aos 60 dias após os tratamentos. A cv. Vitória apresentou decréscimo linear no teor de clorofila, matéria seca de raízes, comprimento da raiz e acúmulo de N, P, K, Ca e Mg, na maioria dos componentes da planta promovidos pelo aumento da concentração de Al na solução nutritiva. A cv. IAC Fantástico teve menor massa de matéria seca total, matéria seca do talo, diâmetro do talo e acúmulo de N, Ca e Mg; no entanto, as características avaliadas não foram influenciadas pelo aumento da concentração de Al indicando maior tolerância desta cultivar ao Al em solução nutritiva.

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Section: Resultsmentioning

confidence: 86%

Macronutrients accumulation and growth of pineapple cultivars submitted to aluminum stress

Mota

Pegoraro

Batista

et al. 2016

Rev. bras. eng. agríc. ambient.

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“…Os níveis de Al utilizados neste trabalho (15 mg dm -3 ) foram considerados nocivos para as plantas, uma vez que para outras leguminosas, como exemplo, Stylosanthes guianensis, 9mg dm -3 em solução nutritiva, por doze dias de cultivo, causaram toxidez nas plantas (Amaral et al, 2000). Nolla et al (2007) observaram que o alumínio reduz consideravelmente o crescimento radicular das plântulas de leguminosas além de aumentar a espessura das raízes, inibindo a expansão das células da raiz, culminando no seu engrossamento.…”

Section: Resultsunclassified

Doses de cálcio no crescimento do feijoeiro cultivado em solução nutritiva, na presença de alumínio

Silva¹,

Moraes

Souza³

2011

Idesia

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“…On the other hand, there were very strong differences in root growth rates between 30 Panicum maximum genotypes (Almeida et al, 2000). Nolla et al (2007) studied effects of aluminium on soybeans, and found declines in both shoot and root dry matter when the aluminium concentration increased. However, at lower doses, aluminium could have a stimulatory effect on the early growth of soybeans (Custódio et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

Early Seedling Growth as a Tool to Assess the Tolerance of Urochloa brizantha Cultivars to Free Aluminium

Yamamoto¹,

Gasparim²,

Neto³

et al. 2018

JAS

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In this study we aimed to evaluate changes in germination, early seedling growth, and some biochemical parameters in Urochloa brizantha cultivars (Basilisk, Marandu, MG4, MG5, BRS Piatã, and Xaraés) subjected to five levels of free aluminium toxicity (0, 1, 2, 4, and 8 mmol c dm³ Al³ + ), and to verify the selection efficiency of aluminium tolerant cultivars. In the germination assay, lots were submitted to germination under simulated stress conditions in the laboratory, to quantify root protrusion, number of normal seedlings, shoot and root length, and dry mass. In the early seedling growth assay, evaluations were done on the seventh day after subjecting seedlings to aluminium stress conditions. Relative growth rate of length, and dry mass of shoots and roots, superoxide dismutase activity (SOD), and concentrations of proline, total antioxidants (TEAC), and malondialdehyde (MDA) were evaluated. During the seedling study period, up to 14 days after sowing, the most tolerant cultivar maintained root growth in aluminium stress conditions, while the most susceptible cultivar reduced root growth, and developed proportionally more shoots, as shoot growth depends on seed reserves. The germination assay indicated interference of the initial seed quality with increasing Al 3+ concentrations. The results indicate that the early seedling growth assay, which excluded germination effects, and used the measurement of root attributes, is appropriate for the discrimination of Al 3+ tolerant genotypes. The Marandu cultivar was the most similar to the Al 3+ tolerance standard Basilisk cultivar.

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Crescimento, morfologia radicular e liberação de compostos orgânicos por plântulas de soja em função da atividade de alumínio na solução do solo de campo natural

Abstract: (0,0; 0,3; 0,6 e 1,2μmol L -1 ) e três níveis de pH (4,0; 5,0 e 6,0

Cited by 11 publications

References 10 publications

Macronutrients accumulation and growth of pineapple cultivars submitted to aluminum stress

Macronutrients accumulation and growth of pineapple cultivars submitted to aluminum stress

Doses de cálcio no crescimento do feijoeiro cultivado em solução nutritiva, na presença de alumínio

Early Seedling Growth as a Tool to Assess the Tolerance of Urochloa brizantha Cultivars to Free Aluminium

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