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Registros recuperados: 4
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Amaranth, quinoa, and millet growth and development under different water regimes in the Brazilian Cerrado PAB
Jayme-Oliveira,Adilson; Ribeiro Júnior,Walter Quadros; Ramos,Maria Lucrécia Gerosa; Ziviani,Adley Camargo; Jakelaitis,Adriano.
Abstract: The objective of this work was to evaluate the growth dynamics of the cover plants amaranth (Amaranthus cruentus), quinoa (Chenopodium quinoa), and millet (Pennisetum glaucum) in a Typic Acrustox, under different water regimes in the Brazilian Cerrado. The cultivation was carried out in the winter, with reduced rainfall, which facilitated the application of varying irrigation depths to the different crops. Water regimes denominated lower, lower middle, upper middle, and upper - corresponding to 217, 386, 563, and 647 mm water depths, respectively - were tested by means of an irrigation bar composed of sprinklers with different flow rates. Plant growth was quantified by weekly collections. Amaranth was the most responsive plant to water. Quinoa...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amaranthus cruentus; Chenopodium quinoa; Pennisetum glaucum; Oxisol; Water stress..
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000800561
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Biological nitrogen fixation in soybean under water restriction and exposed to 1-methylcyclopropene PAB
Nascimento Junior,Vitor Camargo do; Prete,Cássio Egidio Cavenaghi; Nogueira,Marco Antonio.
Abstract: The objective of this work was to assess the effects of 1-methylcyclopropene (1-MCP) on traits related with biological nitrogen fixation on 'BRS 268' soybean (Glycine max) subjected to water restriction. Plants were either exposed to drought between 32 (R2) and 47 (R3) days after sowing (DAS) or kept well-watered, in combination with exposure or not to 1-MCP. On the second day under drought (34 DAS), plants from both water conditions were exposed to 1-MCP in a hermetically sealed chamber for 15 hours. Control plants, dry or well-watered, that were not exposed to 1-MCP were kept in a separate chamber. At 36 (R2) and 47 (R3) DAS, shoot and root dry weights, leaf area index, number and dry weight of nodules, total ureides in sap, and N concentration...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bradyrhizobium; Glycine max; Inhibitor of ethylene; Nodulation; Water stress..
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000700818
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Gas exchange and antioxidant activity in seedlings of C opaifera langsdorffii Desf. under different water conditions Anais da ABC (AABC)
ROSA,DEREK B.C.J.; SCALON,SILVANA P.Q.; CREMON,THAIS; CECCON,FELIPE; DRESCH,DAIANE M..
ABSTRACT The aim of this study was to evaluate gas exchange, efficiency of the photosynthetic apparatus, and antioxidant activity in Copaifera langsdorffii Desf. The seedlings were cultivated under different conditions of water availability, in order to improve the utilization efficiency of available water resources. The seedlings were cultivated in four different water retention capacities (WRC- 25%, 50%, 75%, and 100%), and evaluated at four different time (T- 30, 60, 90, and 120 days). During the experimental period, seedlings presented the highest values for carboxylation efficiency of Rubisco (A/Ci), intrinsic water use efficiency (IWUE = A/gs), chlorophyll index, and stomatal opening, when grown in the substrate with 75% WRC, but the stomatal index...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antioxidant enzymes; Chlorophyll a fluorescence; Photosynthesis; Water stress..
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603039
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Induction of drought tolerance by inoculation of Bacillus aryabhattai on sugarcane seedlings. Repositório Alice
MAY, A.; MOREIRA, B. R. de A.; MASCARIN, G. M.; VIANA, R. da S.; SANTOS, M. S. dos; SILVA, E. H. F. M.; RAMOS, N. P.; MELO, I. S. de.
Abstract: In twenty-first century, free-living endophytic and rhizosphere-competent microbes have become breakthrough strategies to meet global demands for sustainable foods and renewable fuelstocks owing to their great potential to produce stress-tolerant food and energy crops. Here, we investigate how Bacillus aryabhattai could mitigate water stress by drought in sugarcane seedlings. Briefly, the sugarcane genotypes, namely IAC91-1099 and RB85-5156, both exposed to cells-centrifuged B. aryabhattai suspension at 1x108 CFU mL-1 and non-treated were developed under irrigation regimes of 0, 7, 14 and 21 days to simulate different degrees of soil moisture content. The osmotolerant bacterium remarkably enhanced development of aboveground structures and root...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Morphological change; Plant growth-promoting bacterium; Rhizobacterium; Saccharum spp.; Cana de Açúcar; Muda; Estimulante de Crescimento Vegetal; Regulador de Crescimento; Rhizobium; Deficiência Hídrica; Resistência a Seca; Sugarcane; Seedling growth; Growth promotion; Bacillus aryabhattai; Saccharum; Water stress..
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1116161
Registros recuperados: 4
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