SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

SANTOS, A. F. J.; MORAIS, J. S. de; MIRANDA, J. S.; MOREIRA, Z. P. M.; FEITOZA, A. F. A.; LEITE, J.; FERNANDES JUNIOR, P. I..

The aim of this study was to isolate and characterize the culturable rhizobacteria associated with native cacti from Caatinga biome, testing their potential in plant growth promotion and abiotic stress tolerance. Bacterial isolates were examined for plant growth promotion traits and for in vitro abiotic stress tolerance. Promising isolates were 16S rRNA sequenced, tested under greenhouse conditions for plant growth promotion and induction of water deficit tolerance in maize plants. Analysis of variance was used to assess differences among treatments and, when significant, followed by the Scott-Knott?s test. The highest culturable population density was found in Melocactus zehntneri and the most promissing isolates belonged to the genus Bacillus. Under...

Comportamento fotossintetico de bacuri (Platonia insignis Mart.) sob deficit hidrico.

Palavras-chave: Rizobactérias; Bioma Caatinga; Estresse abiótico; PGPR; Cactáceas nativas; Caatinga; Cactaceae; Bactéria; Rhizobium; Bacillus (bacteria); Soil water deficit; Arid lands; Arid soils; Arid zones.

Ano: 2020

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1125168

CLAUDINO, L. B.; DIAS FILHO, M. B..

bitstream/item/206077/1/Comportamento-fotossintetico-de-bacuri.pdf

Cultivares de algodoeiro herbáceo sob déficit hídrico aplicado em fases fenológicas.

Palavras-chave: Plant water relations; Bacuri; Deficiência Hídrica; Fotossíntese; Platonia Insignis; Relação Água-Planta; Photosynthesis; Soil water deficit.

Ano: 1999

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/395135

CORDÃO, M. A.; ARAÚJO, W. P.; PEREIRA, J. R.; ZONTA, J. H.; LIMA, R. F. de; FERREIRA, F. N..

Para o uso do recurso água na agricultura procura-se uma maior eficiência devido á escassez em determinadas regiões. Objetivou-se avaliar o efeito do déficit hídrico, aplicado em diferentes fases fenológicas, sobre o crescimento, fisiologia e produção das cultivares BRS 286 e BRS 336 de algodoeiro herbáceo. O delineamento experimental foi blocos casualizados em parcelas subdivididas, com os seis regimes de déficits hídricos, aplicados em diferentes fases fenológicas do algodoeiro, formando as parcelas e, as duas cultivares de algodoeiro herbáceo, as subparcelas, em 4 repetições. Foram avaliadas as variáveis de crescimento, fisiológicas e produtividade de algodão em caroço do algodoeiro herbáceo. O déficit hídrico restringiu o crescimento de ambas as...

Efeito do deficit hidrico no solo sobre o comportamento estomatico e potencial da agua em mudas de seringueira.

Palavras-chave: Balanço Hídrico; Potencial Hídrico; Deficiência Hídrica; Gossypium Hirsutum; Water balance; Water potential; Soil water deficit.

Ano: 2018

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1107098

BRUNINI, O.; CARDOSO, M..

O objetivo deste trabalho foi avaliar o efeito do estresse hidrico sobre o potencial da agua na folha da seringueira, a resistencia estomatica, e a recuperacao do potencial de agua na folha. Progenies de polinizacao aberta de seringueira (Hevea spp.), provenientes dos clones IAN 873, RRIM 600, IAN 713 e de pes francos de Hbr, foram cultivadas sob condicoes controladas e submetidas a deficits hidricos crescentes no solo pela suspensao da irrigacao. Sob alta disponibilidade de agua no solo, a resistencia estomatica dos clones IAN 713 e IAN 873 era similar, porem inferior a dos demais. A baixos valores de disponibilidade hidrica no solo, a resistencia estomatica aumentou consideravelmente em todas progenies, e houve uma inversao de posicao entre o IAN 713 e o...

Effect of drought stress on proline content and eletrolyte leakage in leaves and roots of forage legumes.

Palavras-chave: Ajuste osmotico; Teor de agua no solo; Estresse hidrico do solo; Potencial de agua nas folhas; Resistencia estomatica; Umidade de solo; Osmotic adjustment; Soil water content; Soil water deficit; Plant water potencial; Stomatal resistance; Soil moisture.

Ano: 1998

URL: http://www.alice.cnptia.embrapa.br/handle/doc/89520

CELENTE, A. M; AGUALONGO, D. A. P.; LARRÉ, C. F.; BORELLA, J.; SANTOS, D. D. dos.; COCCO, K. L. T.; SILVA, J. V. L. da.; LEITZKE, S.; BORTOLINI, F.; AMARANTE, L. do..

bitstream/item/176919/1/Fernanda-Bortolini-5-RS.-Celente-et-al.-2017-BCPP-Macroptilium-e-Vigna.pdf

Eficiencia da irrigacao em rendimento de graos e materia seca de milho.

Palavras-chave: Macroptilium lathyroides; Vigna luteola; Soil water deficit.

Ano: 2017

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1091472

BERGONCI, J.I.; BERGAMASCHI, H.; SANTOS, A.O.; FRANCA, S.; RADIN, B..

O objetivo deste trabalho foi avaliar a eficiência da irrigação e o efeito do déficit hídrico sobre o rendimento de grãos e o acúmulo de matéria seca da parte aérea de uma cultura de milho. O experimento foi conduzido na Universidade Federal do Rio Grande do Sul, em Eldorado do Sul, RS, durante quatro anos agrícolas, de 1993/94 a 1996/97. Utilizando um delineamento experimental em faixas com aspersores em linha, foram aplicados cinco níveis de irrigação, da capacidade de campo à ausência de irrigação. Os rendimentos de grãos foram crescentes com aumentos no nível de irrigação até 80% da dose necessária para a capacidade de campo; a máxima eficiência da irrigação foi obtida entre 60 e 80% e esteve associada a déficits hídricos durante o período crítico da...

Evaluation of Hevea clones subjected to water deficits.

Palavras-chave: Zea mays; Deficit hidrico do solo; Componentes de rendimento; Soil water deficit; Yield components.

Ano: 2001

URL: http://www.alice.cnptia.embrapa.br/handle/doc/103923

Gas exchenge in upland cotton cultivars under water deficit strategies.

CONCEICAO, H. E. O. da.

Six clones of Hevea were subjected to both continuous and cyclic dehydration treatments in order to evaluate their response with respect to photosynthesis, transpiration and stomatal resistance, to plant water status. The trials were carried out on young Hevea plants at eighty-five days after the stumps were transplanted in a greenhouse. The increasing soil dehydration influenced the clones differently by reducing the leaf water potential, transpiration and photosynthesis: and increasing the stomatal resistance. In some clones the cyclic soil dehydrationcaused significant reduction in the level of recovery of the transpiration rates and net photosynthesis up to the first and second water deficit cycle, respectively. For all clones, the leaf water potential...

Tipo: Artigo em anais de congresso (ALICE)

Palavras-chave: Brasil; Amazonas; Manaus; Rubber tree; Deficiência Hídrica; Espécie; Hevea; Seringueira; Soil water deficit.

Ano: 1986

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/665127

PEREIRA, J. R.; ARAÚJO, E. P.; ZONTA, J. H.; GUERRA, H. O. C.; CORDÃO, M. A.; BRITO, M. E. B..

Upland cotton crop in Brazilian semiarid zones has a favorable factor, the duration of the mean solar day. On the other hand, cotton is frequently subjected to soil water deficit. Several physiological indexes are related to the use of water by plants. Among them, photosynthesis and stomatal conductance stand out, as osmotic adjustment, such as stomatal closure, allows plants to escape dehydration and loss of turgor through the maintenance of the water content in the cells. Therefore, the efficiency of water use for irrigated production systems need to be optimized, especially in the cotton crop, as it is a species of great economic and social importance. Aiming to evaluate the gas exchange of upland cotton cultivars cultivated in the Brazilian semiarid,...

Genome-wide analysis of the transcriptional response to drought stress in root and leaf of common bean.

Palavras-chave: Gossypium Hirsutum; Algodão; Irrigação; Water stress; Soil water deficit; Cotton; Irrigation.

Ano: 2019

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1119313

PEREIRA, W. J.; MELO, A. T. de O.; COELHO, A. S. G.; RODRIGUES, F. A.; MAMIDI, S.; ALENCAR, S. A. de; LANNA, A. C.; VALDISSER, P. A. M. R.; BRONDANI, C.; NASCIMENTO JUNIOR, I. R. do; BORBA, T. C. de O.; VIANELLO, R. P..

Genes related to the response to drought stress in leaf and root tissue of drought-susceptible (DS) and tolerant (DT) genotypes were characterized by RNA-Seq. In total, 54,750 transcripts, representative of 28,590 genes, were identified; of these, 1,648 were of high-fidelity (merge of 12 libraries) and described for the first time in the Andean germplasm. From the 1,239 differentially expressed genes (DEGs), 458 were identified in DT, with a predominance of genes in categories of oxidative stress, response to stimulus and kinase activity. Most genes related to oxidation-reduction terms in roots were early triggered in DT (T75) compared to DS (T150) suggestive of a mechanism of tolerance by reducing the damage from ROS. Among the KEGG enriched by DEGs...

Growth and Reproduction of Maize (Zea mays L. cv. Tainung No. 1) Response to Soil Water Deficits. Ⅰ. Changes of Growth when Strees and Recovery Occurring at the Vegetative Stage in the Controlled Environment

Palavras-chave: Functional genomics; Feijão; Phaseolus Vulgaris; Deficiência Hídrica; Raiz; Folha; Beans; Soil water deficit; Genomics; Single nucleotide polymorphism.

Ano: 2020

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1121822

Taiwan Agricultural Research Institute

Chwen-Ming Yang; Wei-Min Hsiang; 楊純明; 向為民.

[[abstract]]The growth of maize during soil water deficets and after water recovery in the vegetative stage was investigated for plants grown in pots under controlled -environment conditions. Soil water deticits were imposed by withholding water from daily irrigation and released by rewatering. It was found that plant height was significantly declined when soil water potential reached down to -2.5 bars, but it can be recovered in 4 weeks when water deficits were released at soil water potential as low as -10 bars. Reduced plant height in the recovered plants measured at tasseling was therefore caused by plant height reduction during the stress period, rather than on the recovery. Leaf length, rather than leaf width was decreased by water deficiency, the...

Palavras-chave: Growth; Reproduction; Maize; Soil water deficit; Recovery; Vegetative stage 玉米; 產量; 生長; 土壤缺水; 灌水恢復; 營養生長期 [[classification]]6.

Ano: 1992

Growth and yield respones of maize (Zea mays L.) to soil water deficits. Ⅱ. Effects of water deficit timing and strength

Taiwan Agricultural Research Institute

Chwen-Ming Yang; Ming-Jen Fan; Wei-Min Hsiang; 楊純明; 范明仁; 向為民.

[[abstract]]Water is a major limiting factor on maize production in Taiwan. It is very important, therefore, to study the relations of soil moisture stress and maize (Zea mays L.) yield under local conditions. This field work was conducted on the experimental farm of Taiwan Agricultural Research Insitiute (TART) at Wufeng, Taiwan to evaluate the relative effects of water deficit timing and strength on the growth and yield of maize, cultivar Tainung No. 1. Water stress was imposed by the withholding of irrigation during reproductive growth phase (fall crop 1991) and vegtative growth phase (spring crop 1992), respectively, to cause soil water potentials to the range from − (control) to −10 bars. It was shown that leaf number per plant was not significantly...

Palavras-chave: Growth; Maize; Soil water deficit; Strength; Timing; Yield 生長; 產量; 玉米; 土壤缺水; 缺水時期; 缺水程度 [[classification]]6.

Ano: 1993

Identification of novel soybean microRNAs involved in abiotic and biotic stresses.

KULCHESKI, F. R.; OLIVEIRA, L. F. V.; MOLINA, L. G.; ALMERAO, M. P.; RODRIGUES, F. A.; MARCOLINO, J.; BARBOSA, J. F.; STOLF-MOREIRA, R.; NEPOMUCENO, A. L.; MARCELINO-GUIMARÃES, F. C.; ABDELNOOR, R. V.; NASCIMENTO, L. C.; CARAZZOLLE, M. F.; PEREIRA, G. A. G.; MARGIS, R..

Background: Small RNAs (19-24 nt) are key regulators of gene expression that guide both transcriptional and posttranscriptional silencing mechanisms in eukaryotes. Current studies have demonstrated that microRNAs (miRNAs) act in several plant pathways associated with tissue proliferation, differentiation, and development and in response to abiotic and biotic stresses. In order to identify new miRNAs in soybean and to verify those that are possibly water deficit and rust-stress regulated, eight libraries of small RNAs were constructed and submitted to Solexa sequencing. Results: The libraries were developed from drought-sensitive and tolerant seedlings and rust-susceptible and resistant soybeans with or without stressors. Sequencing the library and...

Influence of water deficit and weed control on water relations, growth, and yield of dry seeded rice

Palavras-chave: Soja; Deficiência hídrica; Gene marcador; Soybeans; Gene expression; Soil water deficit.

Ano: 2011

URL: http://www.alice.cnptia.embrapa.br/handle/doc/911802

International Rice Research Institute

Naseem, S. B..

200 leaves : ill. Thesis (Ph.D.) -- Central Luzon State University

Tipo: Thesis

Palavras-chave: Rice; Plant-water relations; Soil water deficit; Weed control; Plant growth; Yields; Dryland farming.

Ano: 1993

URL: http://hdl.handle.net/123456789/729

Interactive effects of temperature, elevated CO2 and water deficit on physiological components of sunflower.

MORAES, L.; MOREIRA, A.; CARVALHO, L. M. de.

bitstream/item/193662/1/p-114.pdf

Irradiance and water deficit effects on gas exchange behavior of two C3 amazonian weeds.

Palavras-chave: Sunflower; Helianthus Annuus; Girassol; Seca; Soil water deficit.

Ano: 2018

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1106688

DIAS FILHO, M. B.; WISE, J. A.; DAWSON, T. E..

1993

Key factors that influence for seasonal production of Guinea grass.

Palavras-chave: Erva daninha; Fisiologia; Deficiência de umidade no solo; Troca de gás; Ipomoea asarifolia; Stachytarpheta cayennensis; Weeds; Plant physiology; Soil water deficit; Gas exchange.

Ano: 1993

URL: http://www.alice.cnptia.embrapa.br/handle/doc/396469

ARAUJO, L. C. de; SANTOS, P. M.; RODRIGUEZ, D.; PEZZOPANE, J. R. M..

Climate, soil and management are the main drives for growth and production of tropical pastures. Thus, a better understanding of the effects of these factors and their interactions under climate conditions is required to obtain effective management options. Here, we used data from two field trials to research on climate and management interactions on the production seasonality of Panicum maximum Jacq. Treatments included four sampling times (250, 500, 750, and 1000 °C accumulated) during eight regrowth period, under irrigated and rainfed conditions and, cuts were made to simulate grazing intensity. All treatments were arranged in a completely randomized block design with four replications. At each sampling time, basal tillers were sampled to observe...

Morphological and physiological traits of upland rice cultivars affected by water deficit.

Palavras-chave: Daylength; Degree-days; Mombaça; Tropical forage; Water deficit; Capim-guiné; Panicum Maximum; Soil water deficit.

Ano: 2018

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095488

GUIMARÃES, C. M.; STONE, L. F.; SILVEIRA, P. M. da.

The use of drought-tolerant cultivars is a promising strategy to minimize the effects of water deficits on upland rice productivity. Therefore, it is important to establish an adequate methodology to evaluate the performance of upland rice cultivars under water deficit. In this study, one evaluated the effects of water deficit on morphological and physiological traits of two upland rice cultivars, in a greenhouse, in soil columns, using a phenotyping platform named SITIS. The experiment occurred in a complete randomized block design, in a split plot scheme with four replications. The main plots consisted of a well-irrigated treatment with daily replacement of 100% evapotranspired water and four water restriction regimes (daily replacement of 20%, 40%, 60%...