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| Registros recuperados: 13 | |
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| Camacho,R.G.; Caraballo,D.F.. |
| A greenhouse experiment was carried out to evaluate the responses among 10 maize (Zea mays L.) genotypes under drought stress. Seeds were planted in washed sand in plastic pots. The research was established in a completely random design with ten treatments and three replicate pots. The plants were harvested four weeks after sowning, and leaf area per plant (LA), root volume (RV), longest root length (LRL), plant height (PH), fresh (RFW) and dry weight (ROW) of roots, shoot dry weight (SOW), RDW/SDW ratio, and total dry matter production (TDM) were determined. Significant varietal differences for all characters were found, except for LRL. The data obtained allowed to identify Cargill-163 as a poor genotype at low water supply. Danac-3006, FM-6,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Leaf area; Root volume; Root length; Plant height; Root weight; Shoot weight; Total dry matter; Drought resistance. |
| Ano: 1994 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161994000300012 |
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| Vieira,Jairo V; Silva,Giovani Olegario da; Boiteux,Leonardo S. |
| The estimate of the genetic parameters associated with processing (fresh-cut) traits, including root length (RL), is crucial for carrot breeding programs in tropical areas. The cultivar Alvorada is an important germplasm due to its resistance to nematodes, leaf blight, heat-tolerance, and high carotenoid content. Seventy-four 'Alvorada' half-sib progenies were evaluated during the summer of 2005 in the Federal District, Brazil, in a randomized complete block design with three replications. Thirteen competitive plants in each block were randomly selected and evaluated and/or classified for RL and for number of leaves (NL), leaf length (LL), root tip type (RT), root mass (RW), crown shape (CS), root diameter (RD), and xylem diameter (XD). The Pearson's... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Daucus carota; Heritability; Genetic correlation; Path analysis; Root length. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000100002 |
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| Garcez,Tiago Barreto; Megda,Marcio Mahmoud; Artur,Adriana Guirado; Monteiro,Francisco Antonio. |
| The development of root system of forage grasses is influenced by the supply of mineral nutrients. The experiment was carried out in a greenhouse in Piracicaba, São Paulo State, with the objective of evaluating the effect of nitrogen and magnesium rates on dry mass yield, total length and surface, specific length and surface, and concentrations of nitrogen, magnesium, calcium and potassium in the root system of Brachiaria brizantha Stapf. cv. Marandu. It was studied five rates of nitrogen (2, 9, 16, 23 and 30 mmol L-1) and five rates of magnesium (0.05, 0.70, 1.35, 2.00 and 2.65 mmol L-1) in nutrient solutions in an incomplete 5² factorial arrangement, which resulted in the following combinations: 2/0.05; 2/1.35; 2/2.65; 9/0.70; 9/2.00; 16/0.05; 16/1.35;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria brizantha; Nutrient; Nutrient solution; Root; Root length; Root surface. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000700005 |
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| Partelli,Fábio Luiz; Covre,André Monzoli; Oliveira,Marcos Goes; Alexandre,Rodrigo Sobreira; Vitória,Edney Leandro da; Silva,Marcelo Barreto da. |
| The objective of this work was to evaluate the root system distribution and the yield of 'Conilon' coffee (Coffea canephora) propagated by seeds or cuttings. The experiment was carried out with 2x1 m spacing, in an Oxisol with sandy clay loam texture. A randomized complete block design was used, following a 2x9x6 factorial arrangement, with two propagation methods (seeds and cuttings), nine sampling spacings (0.15, 0.30, 0.45, 0.60, 0.75, and 0.90 m between rows, and 0.15, 0.30, and 0.45 between plants within rows), six soil depths (0.10-0.20, 0.20-0.30, 0.30-0.40, 0.40-0.50, and 0.50-0.60 m), and six replicates. Soil cores (27 cm3) with roots were taken from 12 experimental units, 146 months after planting. The surface area of the root system and root... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea canephora; Root diameter; Root length; Root volume; Vegetative propagation. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000500349 |
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| Coelho, Eugênio Ferreira; Melo, Diego Magalhães de; Pereira, Bruno Laecio da Silva; Santos, Djalma Barbosa dos; Rosa, Raul Castro Carriello. |
| This study aimed to evaluate the effects of fertigation with humic substances, with and without the addition of plant extracts, on the root system of the 'BRS Princesa' banana cultivar. The banana crop was cultivated at a spacing of 2.0 x 2.5 m and fertigated using a drip system in a dystrocohesive Yellow Latosol. The experimental design was randomized blocks, in a split-split-plot scheme with five replicates, for the following factors: humic substance doses and presence of a plant extract formulation. The treatments consisted of five doses of humic substances, based on a reference dose of 14.14 L ha-1 cycle-1, in the presence and absence of plant extract. The variable root length (cm) was subjected to variance analyses to evaluate the effect of the humic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.03.02.02-7 Musa spp.; Root length; Humic acid; Fulvic acid. Conservação do solo e fertirrigação. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30790 |
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| Sarto,Marcos Vinicius Mansano; Bassegio,Doglas; Rosolem,Ciro Antonio; Sarto,Jaqueline Rocha Wobeto. |
| ABSTRACT Safflower (Carthamus tinctorius L.) is a commercial seed crop grown for its good yield of high-quality oil. It is tolerant to water stress but may be sensitive to soil compaction. The aim of this study was to assess safflower growth under different degrees of soil compaction at depths of 0.15 m to 0.20 m. The experiment was carried out in PVC pots constructed from three rings. Five levels of penetration resistance (0.20, 0.33, 0.50, 0.93, and 1.77 MPa) were applied in the intermediate ring, and two safflower genotypes, IMA-4904 and IMA-2106, were examined. There was no difference between safflower genotypes with respect to their resistance to soil compaction, which reduced root length density in the compacted layer and changed the root... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carthamus tinctorius L.; Root length; Bulk density; Penetration resistance. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200348 |
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| Araújo,Adelson Paulo; Fernandes,Aurélio Magno; Kubota,Flavio Yuudi; Brasil,Felipe Costa; Teixeira,Marcelo Grandi. |
| Evaluation of root traits may be facilitated if they are assessed on samples of the root system. The objective of this work was to determine the sample size of the root system in order to estimate root traits of common bean (Phaseolus vulgaris L.) cultivars by digital image analysis. One plant was grown per pot and harvested at pod setting, with 64 and 16 pots corresponding to two and four cultivars in the first and second experiments, respectively. Root samples were scanned up to the completeness of the root system and the root area and length were estimated. Scanning a root sample demanded 21 minutes, and scanning the entire root system demanded 4 hours and 53 minutes. In the first experiment, root area and length estimated with two samples showed,... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Phaseolus vulgaris; Root area; Root length; Sampling. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2004000400003 |
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| Bonomelli,Claudia; Bonilla,Carlos; Acuña,Edouard; Artacho,Pamela. |
| The period between flowering and harvest in the sweet cherry (Prunus avium L.) is shorter than most fruit trees; thus, competition for assimilate and nutrients occurs early in the season. To properly supply water and nutrients during this critical period, optimal growth and root development are necessary. To characterize the root growth pattern of cherry trees in relation to shoot growth and phenology, a study was conducted on a 'Bing' cherry orchard on Gisela 6 rootstock at fourth leaf, located in central Chile (34°70' S, 70°43' W). During the 2009-2010 season, the shoot length and fruit diameter were measured on eight trees, and the root length was quantified by installing rhizotrons on two trees. Additionally, a two-tone (black/white) plastic cover was... |
| Tipo: Journal article |
Palavras-chave: Accumulated degree days; Root growth; Root length; Soil temperature; Sweet cherry. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000100010 |
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| Freitas,Lucas B. de; Fernandes,Dirceu M.; Maia,Suelen C. M.; Moniz,Arianne; Mazziero,Beatriz G.; Steiner,Fábio. |
| ABSTRACT The aluminum source to produce toxicity in upland rice in nutrient solution experiments is not yet well established, althought the aluminum potassium sulfate has been utilized source to produce aluminum toxicity. However, in recent studies have used aluminum chloride. The aim of this study was to evaluate the capacity of aluminum sources and doses to produce toxicity in upland rice plants grown in nutrient solution. The experiment was arranged in a block randomized design, in a 2 x 5 factorial scheme and four repetitions. The treatments were two aluminum sources (aluminum potassium sulfate - AlK(SO4)2.12H2O and aluminum chloride - AlCl3.6H2O) and five aluminum doses in nutrient solution (0, 370, 740, 1100 and 1480 μmol L-1). The experiment was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; Ionic activity; Visual Minteq; Root length. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000700511 |
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| Carvalho,Agnaldo Ferreira de; Silva,Giovani Olegario da; Magalhães,Caroline da Cruz. |
| ABSTRACT The knowledge about harvest time in carrots is important to determine the moment when the farmer will be able to obtain higher yield and quality of roots. Thus, this work aimed to verify the moment of harvest, aiming to maximize yield and the quality of roots. From November 2018 to March 2019, three cultivars, Brasília, BRS Planalto and HX4098 were evaluated in Brasília-DF in DBC design with three replications, in a split plot scheme, in which the treatments of the subplots were the harvest times at 80, 90, 100, 110 and 120 days after sowing (DAS). The experiment was installed on November 20, 2018, in 1 m2 useful area seedbeds. Sowing was done manually, in transverse grooves, with double spacing rows 10 x 20 cm, and 5 cm spacing between plants.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Daucus carota; Root yield; °Brix; Root length; Root diameter. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000300319 |
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| Phuttapong Manokam; Nattinee Phatarakul; Sansanee Jamjod; ฺำBenjavan Rerkasem. |
| Rice plants with more roots are better at acquiring water and nutrients from the soil. But to study rice root system in the soil is time consuming and labour intensive, making screening for root traits in breeding programs difficult. The objective of this study was to compare root growth of two rice varieties with different rooting habits, Bue Bang and KDML105, in 8 rooting media, in order to develop a simple and rapid means for screening. The rooting media were T1, Sansai soil; T2, black loam soil; T3, 1:1 mixture (by weight) of black loam soil and fine sand; T4, 2:1 mixture of black loam soil and fine sand; T5, 1:1 mixture of black loam soil and coarse sand; T6, 2:1 mixture of black loam soil and coarse sand; T7, complete nutrient solution and T8,... |
| Tipo: PhysicalObject |
Palavras-chave: Rice root; Root length; Root dry weight; Screening method; ข้าว; รากข้าว; ความยาวราก; น้ำหนักแห้งราก; วิธีการประเมิน; วัสดุปลูก; การคัดเลือกพันธุ์; การปรับปรุงพันธุ์. |
| Ano: 2013 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5433 |
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| Registros recuperados: 13 | |
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