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| Registros recuperados: 112 | |
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| Araújo,Renato; Alves Junior,José; Casaroli,Derblai; Evangelista,Adão Wagner Pêgo. |
| ABSTRACT The need to irrigate sugarcane in the Brazilian Savanna is due to the lack of rain from April to September. For efficient sugar accumulation, the crop needs water stress or heat stress at the maturation stage. However, when the water deficit is intense at this stage, it occurs the reduction in crop production. The objective of this study was: (i) to assess the quality of the raw material of sugarcane in different drying-off seasons before harvest; (ii) to evaluate the influence of heat stress on the culture. The experiment was conducted in Santo Antônio de Goiás (GO), Brazil, in Oxisol, with CTC4 variety in cane-plant cycle. A randomized block design in a split-plot array in time was used. The treatments of the plots were five drying-off times... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water stress; Irrigation management; Brazilian savanna; Thermal stress. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000100118 |
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| Rickes,Leticia Neutzling; Klumb,Elsa Kuhn; Benitez,Letícia Carvalho; Braga,Eugenia Jacira Bolacel; Bianchi,Valmor João. |
| ABSTRACT Water deficit is responsible for a negative impact on agricultural systems. Several physiological, biochemical, and molecular processes are initiated as a response to water-deficit stress. Quantifying the differential expression of the genes involved in the response to water-deficit stress plays a key role in the development of molecular strategies for engineering water-stress tolerance in plants. Therefore, the present study aims to evaluate the expression of key genes involved in the water-deficit response process in peach trees cv. Chimarrita grafted onto two different rootstocks. The experimental design was completely randomized, with four treatments that correspond to the evaluation periods: day zero (control), the fourth, seventh, and ninth... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Prunus persica; Osmotic adjustment; Water stress; RT-qPCR; S6PDH; P5CS. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000100060 |
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| Okuyama,Lauro Akio; Federizzi,Luiz Carlos; Barbosa Neto,José Fernandes. |
| Analyses of genotype by environment interactions were carried out for wheat genotypes grown under irrigated and non-irrigated field conditions, in two sowing dates during three years. The linear regression method was used to analyze the stability of grain yield. Genotype by environment interactions was observed for grain yield in all groups of environments. Nesser was the most productive and stable genotype in all groups of environments, followed by IAPAR 17-Caeté. In the late sowing, better yield performances were observed for the cultivars OCEPAR 7-Batuíra, IAPAR 17-Caeté and Nesser, under irrigated condition, and Nesser and IAPAR 28-Igapó, under non-irrigated condition. The results indicated that Nesser gave high grain yield with superior adaptability... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drought tolerance; Genotype by environment interaction; Water stress. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000600004 |
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| Destro,Deonisio; Miglioranza,Édison; Arias,Carlos Alberto Arrabal; Vendrame,Jefferson Marcos; Almeida,José Carlos Vieira de. |
| The present study was carried out to determine the contribution of main stems and tillers to the total yield of two wheat cultivars (Triticum aestivum L.), Cocoraque and BH-1146, under two water treatments: a) normal field conditions, and; b) irrigation, in Londrina, PR, Brazil. The experiment was an eight replication randomized complete block design with treatments arranged in split-plots. Data on total grain yield, main stem grain yield, tillers grain yield, the ratio between tiller and total grain yield, yield components and other 17 traits were collected. The cultivar BH-1146 had a higher total grain yield in relation to Cocoraque under normal field conditions; i, e., under water stress. Main stem grain yield responded positively and significantly to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Harvest index; Growth period; Hectolitric weight; Poaceae; Water stress. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000400001 |
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| Demir,Ibrahim; Mavi,Kazım. |
| Germination percentage, seedling fresh weight and sensitivity index of the pepper (Capsicum annuum L. cv. Sera Demre) seed lots harvested 50, 60 and 70 days after the anthesis (daa) in 2001 and 2002 were determined under the salt (NaCl) and osmotic (PEG) stresses at the same water potentials of -0.3, -0.6 and -0.9 MPa. The objective was to study whether the germination and seedling growth were inhibited by the salt toxicity or osmotic effect during the development. The higher the salt and osmotic stress concentrations the lower was the germination percentage and seedling fresh weight. The seed germination was higher and sensitivity index were lower in NaCl than in PEG at the same water potential and harvest in both the years. They were able to germinate at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum annuum; Salinity; Water stress; Germination. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000500004 |
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| Khadraji,Ahmed; Mouradi,Mohammed; Ghoulam,Cherki. |
| ABSTRACT The effect of the water deficit on the fresh and dry weight in the various parts of the plant and on several mineral processes in different symbiotic combinations for the chickpea (Cicer arietinum L.) varieties was studied. The experiment was undertaken in the greenhouse during five weeks.Seedlings were separately inoculated with a suspension of three rhizobia strains and were grown under water deficit (50% of field capacity). Our results showed that the inoculation with the adequate rhizobia may improve the chickpea dry weight by improving the nodules weight, increase NR activity and more K+ accumulation under water deficit. Generally, MC0415 (S1) strain gives the best results, particularly in the dry weight nodules (5% of reduction) and in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Reductase; K+/Na+ratio; Tolerance; Water stress. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100319 |
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| Carolino,Sonia Madali Boseja; Vaez,Juliana Rocha; Irsigler,André Southernman Teixeira; Valente,Maria Anete S.; Rodrigues,Leonardo Augusto Zebral; Fontes,Elizabeth Pacheco Batista. |
| In contrast to yeast or mammalian counterpart, BiP (Binding Protein) from several plant species, such as maize, tobacco, Arabidopsis and soybean, is encoded by a multigene family. A systematic characterization and analysis of soybean BiP expression have provided evidence for the existence of multiple, complex regulatory mechanisms controlling plant BiP gene expression. In support of this observation, the soybean BiP gene family has been shown to exhibit organ-specific expression and differential regulation in response to abiotic stresses through distinct signaling pathways. As a member of the stress-regulated HSP70 family of protein, the elucidation of plant BiP function and regulation is likely to lead do new strategies to enhance crop tolerance to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endoplasmic reticulum; ER stressors; Grp78; Molecular chaperone; Unfolded protein response; Water stress. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202003000200001 |
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| Registros recuperados: 112 | |
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