Crescimento Inicial Do Pinhão-Manso Submetido a Diferentes Regimes Hídricos Em Latossolo Vermelho Distrófico

Padilha, Neriane de Souza; Silva, Cesar José da; Pereira, Sílvio Bueno; Silva, João Alfredo Neto da; Heid, Diego Menani; Bottega, Simone Priscila; Scalon, Silvana de Paula Quintão

doi:10.5902/1980509822752

Cited by 27 publications

(28 citation statements)

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“…However, results obtained by Padilha et al (2016) (Jatropha curcas L.), the treatments of 60 and 100% of the water retention capacity in the soil resulted in higher plant height. It can be affirmed that the resurgence of new leaves, which apparently became slower in B. divaricata plants under severe water stress, probably because it is a defense mechanism that the plant uses, as well as reduction of leaf area.…”

Section: Resultsmentioning

confidence: 82%

Morphophysiological evaluation of Bauhinia divaricata L. (Fabaceae) plants at different water regimes

Alves¹,

Albuquerque²,

Pereira³

et al. 2018

Biosci. J.

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The pata-de-vaca (Bauhinia divaricata L.) tree is a species widely distributed in Brazil, it has a high ornamental and economic value. Its leaves are used in renal inflammations, such as diuretic, hypoglycemic, being considered a medicinal plant of popular use. The research was carried out in a greenhouse belonging to the Laboratório de Ecologia Vegetal, at the Centro de Ciências Agrárias (CCA), from Universidade Federal of Paraíba (UFPB). The objective was to evaluate the morphophysiological characteristics of B. divaricata plants at different water regimes. The experimental design was completely randomized with five water treatments 1 (100% control), 2 (80%), 3 (60%), 4 (40%) and 5 (20%) of the container capacity. The height, number of leaves and stem diameter were evaluated weekly. At the end of the experiment the plants had their organs separated and taken to the greenhouse to obtain the dry matter of the leaves, stem, roots and total dry matter, and also, biomass allocation in the leaves, stem and roots. Plant height did not differ statistically between the treatments. The number of leaves, diameter, leaf, stem and root allocation and root and shoot dry matter were higher under water availability (100% of container capacity). For the production of B. divaricata L. seedlings water regime should be 100% and 80% of the container capacity, but the seedlings grow satisfactorily. 122 Morphophysiological evaluation… ALVES, M. M. et al. Biosci. J., Uberlândia, v. 34, supplement 1, p. 120-130, Dec. 2018 ALVES, M. M. et al. Biosci. J., Uberlândia, v. 34, supplement 1, p. 120-130, Dec. 2018 diferentes regimes hídricos. O delineamento experimental foi inteiramente casualizado com cinco tratamentos hídrico 100%, 80%, 60%, 40% e 20% da capacidade de pote. Avaliou-se, semanalmente a altura, número de folhas e diâmetro do caule. Ao final do experimento as plantas tiveram seus órgãos separados e levados à estufa para obtenção da matéria seca das folhas, caule, raízes e massa seca total, e ainda, alocação de biomassa nas folhas, caule e raízes. A altura de plantas não diferiu estatisticamente entre os tratamentos, o número de folhas, diâmetro, alocação de folhas, caules e raízes e massas seca da raiz e parte aérea foram maiores sob maior disponibilidade de água (100% da capacidade do recipiente). Para a produção de mudas de B. divaricata L. o regime hídrico deve ser de 100% e 80% da capacidade do recipiente, porém as mudas crescem satisfatoriamente. PALAVRAS-CHAVE: Espécie florestal. Matéria seca. Produção de mudas.

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Section: Resultsmentioning

confidence: 82%

Morphophysiological evaluation of Bauhinia divaricata L. (Fabaceae) plants at different water regimes

Alves¹,

Albuquerque²,

Pereira³

et al. 2018

Biosci. J.

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“…Nevertheless, according to Marenco and Lopes (2009), in situations of moderate or severe water deficit, stomatal resistance may occur from the increase in the diffusion of the acid towards the guard cells, whereas the stomata tend to remain open in mild stress. Padilha et al (2016) stated that the abscisic acid induces stomatal closure, as long as its synthesis is stimulated by water scarcity. In these circumstances, stomatal closure is related to the decrease in leaf water potential (Pereira, 2012).…”

Section: Resultsmentioning

confidence: 99%

Gas exchange in upland cotton cultivars under water deficit strategies

Araújo¹,

Pereira²,

Zonta³

et al. 2019

Afr. J. Agric. Res.

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Aiming to evaluate the gas exchange of upland cotton cultivars cultivated in the Brazilian semiarid, subject to water deficit periods on the phenological stages, an experiment was carried out at the Campina Grande Federal University, Pombal county campus, Paraíba State, Brazil, between June and December 2015. Treatments were formed from a split-plot arrangement, in which the plots were 6 water deficit periods (P) (P1 = No deficit, P2 = Deficit in the initial growth stage, P3 = Deficit in the flower bud stage, P4 = Deficit in the flower stage, P5 = Deficit in the boll stage and P6 = Deficit in the open boll stage) and the subplots, 2 upland cotton cultivars (C) (C1 = Brazil Seeds 286 and C2 = BRS 336), in randomized block design, with 4 replicates. Water deficits reduced the gas exchange of the upland cotton plants, mainly stomatal conductance, transpiration and photosynthesis. The cotton cultivars BRS 286 and BRS 336 presented similar behavior in the different water deficits applied on different phenological stages. Cotton was less tolerant to water deficits in the boll formation stage and more tolerant in the initial growth and flower bud stages.

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“…Tabela 3. ANAVA para a incremento da altura da muda (IAM), incremento do número de folhas (INF), incremento da área da maior folha (IAMF), ocupação de vaso (OV), taxa de fotossíntese (A), carbono interno ( A deficiência hídrica diminui a turgescência da célula, reduzindo a diferenciação celular e comprometendo o crescimento das plantas (PADILHA et al, 2016). Para Silva et al (2012), o alongamento celular nos entrenós pode ser influenciado pelas perdas no potencial da água das células componentes do caule, ocasionando uma menor altura das plantas.…”

Section: Resultsunclassified

ACLIMATIZAÇÃO DE MUDAS MICROPROPAGADAS DE Anthurium maricense COM DIFERENTES LÂMINAS DE IRRIGAÇÃO

Campos

Bomfim

Carvalho

et al. 2019

R_I

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ACLIMATIZAÇÃO DE MUDAS MICROPROPAGADAS DE Anthurium maricense COM DIFERENTES LÂMINAS DE IRRIGAÇÃO ARLENE SANTISTEBAN CAMPOS1; GUILHERME VIEIRA DO BOMFIM2; ANA CRISTINA PORTUGAL PINTO DE CARVALHO3; BENITO MOREIRA DE AZEVEDO2; ANA CECÍLIA RIBEIRO DE CASTRO3 E DENISE VIEIRA VASCONCELOS4 1Departamento de ciência do solo, Universidade Federal do Ceará, Av. Mister Hull, 2977, Campus do Pici, CEP: 60356-001, Fortaleza, Ceará, Brasil, arlenesan@yahoo.com.br. 2Departamento de engenharia agrícola, Universidade Federal do Ceará, Av. Mister Hull, 2977, Campus do Pici, CEP: 60356-001, Fortaleza, Ceará, Brasil, guile2007@gmail.com, benito@ufc.br. 3Embrapa Agroindústria Tropical, Rua Pernambuco, 2270, Pici, CEP 60511-110, Fortaleza, Ceará, Brasil, cristina.carvalho@embrapa.br, cecilia.castro@embrapa.br. 4Instituto Federal de Educação, Ciência e Tecnologia do Pará, Estrada de Ferro de Bragança, s/nº, Taíra, CEP: 68600-000, Bragança, Pará, Brasil, denisevasconcelos@hotmail.com. 1 RESUMO O objetivo deste trabalho foi avaliar a influência de diferentes lâminas de irrigação na aclimatização de mudas micropropagadas de Anthurium maricense. O delineamento experimental foi o completamente ao acaso, composto por cinco tratamentos e quatro repetições de quatro mudas cada. Os tratamentos foram as lâminas de irrigação estimadas com cinco percentuais da capacidade de retenção de água (CRA) do substrato: 50; 75; 100; 125; e 150% da CRA. As mudas foram cultivadas individualmente em vasos de 415 mL contendo o substrato comercial HS Flores®. Durante a aclimatização, as mudas foram irrigadas duas vezes ao dia e receberam adubações foliares em dias alternados. Foram analisadas as variáveis: incremento na altura da muda (IAM); incremento no número de folhas por muda (INF); incremento na área da maior folha (IAMF); ocupação de vaso (OV); taxa de fotossíntese líquida (A); carbono interno (Ci); e temperatura (Ti) e umidade (Ui) foliar. Com base nos resultados, supõe-se que as mudas de A. maricense possam apresentar evidência de resistência ao déficit hídrico. A lâmina de irrigação estimada com 150% da CRA proporciona o maior valor de IAMF. Lâminas de irrigação intermediárias, entre 100 e 125% da CRA, proporcionam os maiores valores de IAM, INF e OV. Palavras-chave: antúrio, plantas ornamentais, manejo da irrigação. CAMPOS, A. S.; BOMFIM, G. V. do; CARVALHO, A. C. P. P. de; AZEVEDO, B. M. de; CASTRO, A. C. R. de; VASCONCELOS, D. V. ACLIMATIZATION OF MICROPROPAGATE PLANTLETS OF Anthurium maricense WITH DIFFERENT IRRIGATION DEPHTS 2 ABSTRACT The aim of this study was to evaluate the development of micropropagated plantlets of Anthurium maricense during the acclimatization phase in screen environment, under different irrigation depths based on percentages of water retention capacity (WRC), on the weather conditions in the greenhouse environment. The experimental design was completely randomized, composed of five irrigation depths, with four replicates and four plantlets per plot. The treatments consisted of irrigation depths estimated with five levels of water retention capacity (WRC) of the substrate: 50; 75; 100; 125; and 150% of WRC. The plantlets were cultivated in 415 mL pots with HS Flowers® substrate. During the acclimatization, all plantlets were irrigated twice a day and fertilized, on alternate days, with leaf fertilization. The variables analyzed were: plant height increment (PHI); number of leaves increment (NLI); largest leaf area increment (LLAI); pot occupation (PO); net photosynthetic rate (A); internal carbon (Ci); leaf temperature (Ti) and leaf moisture (Ui). Based on the results obtained, it is assumed that A. maricense micropropagated plantlets may present evidence of resistance to water deficit. The estimated irrigation depth of 150% of WRC provides the highest value of LLAV. Intermediate irrigation depth, between 100 and 125% of the WRC, provide the highest values of PHV, NLV and PO. Keywords: anthurium, ornamental plant, irrigation management.

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Crescimento Inicial Do Pinhão-Manso Submetido a Diferentes Regimes Hídricos Em Latossolo Vermelho Distrófico

Cited by 27 publications

References 1 publication

Morphophysiological evaluation of Bauhinia divaricata L. (Fabaceae) plants at different water regimes

Morphophysiological evaluation of Bauhinia divaricata L. (Fabaceae) plants at different water regimes

Gas exchange in upland cotton cultivars under water deficit strategies

ACLIMATIZAÇÃO DE MUDAS MICROPROPAGADAS DE Anthurium maricense COM DIFERENTES LÂMINAS DE IRRIGAÇÃO

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