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| Registros recuperados: 125 | |
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| Furlani,Ângela Maria Cangiani; Carvalho,Cristiane Pierrotte; Freitas,José Guilherme de; Verdial,Marcelo Fontanetti. |
| Field symptoms of open spikelets in wheat were observed in specific cultivars and supposedly related to low B soils and differential B requirement among cultivars. This study aimed to evaluate the response of four wheat (Triticum aestivum L.) cultivars, IAC 24, IAC 60, IAC 287 and IAC 289, to increasing B concentrations in nutrient solution. The experiment was set up in a randomized complete block design, with four replicates and five B concentrations (0.0, 0.05, 0.2, 0.8 and 2.0 mg L-1), during 1997/1998, in a greenhouse. Plants were grown to maturity and evaluated for plant height, spike number and length, open spikelet number, grains per spike, plant parts dry matter, B, P, K, Ca and Mg leaf concentrations and total nutrient contents. The visual... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum L.; Boron nutrition; Leaf B concentrations; Critical limits. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000200022 |
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| Almeida,Milton Luiz de; Sangoi,Luís; Merotto Jr.,Aldo; Alves,Antônio Carlos; Nava,Itamar Cristiano; Knopp,Armando Cristiano. |
| Tillers are important structures for wheat (Triticum aestivum L.) because they contribute to increase the number of spikes per area, enhancing grain yield. Stresses during plants early growth have a sizable effect on tiller production. Three experiments were conducted to evaluate the effects of stresses induced by unevenness in sowing depth, defoliation and differences in soil pH on tiller emission and dry mass accumulation of wheat cultivars. The experiments were carried out in Lages, Southern Brazil, during the winter growing seasons of 2000 and 2001. They were performed in square boxes, under natural conditions of radiation and irrigation. In the first experiment, five types of sowing depths were tested to simulate different systems of unevenness in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum L.; Tillering; Sowing depth; Defoliation; Aluminum. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000300004 |
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| Valério,Igor Pirez; Carvalho,Fernando Irajá Félix de; Benin,Giovani; Silveira,Gustavo da; Silva,José Antonio Gonzalez da; Nornberg,Rafael; Hagemann,Thais; Luche,Henrique de Souza; Oliveira,Antônio Costa de. |
| Adjustment of seeding schemes is one of the crop management techniques that most influences grain yield components. This work aimed to characterize the potential grain yield and its components in wheat (Triticum aestivum L.) genotypes with contrasting tillering ability under different seeding densities and environments. Five experiments were conducted in split-plot design, each with ten cultivars (main plot), sown in five distinct seeding densities (subplots). Experiments were sown in three locations in southern Brazil in the years 2005, 2006 and 2007. The grain yield per plot and its yield components: number of fertile tillers, weight of 1,000 grains, ear weight and number of grains per ear were evaluated. Genotypes with reduced tillering ability... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum L.; G × E interaction; Tiller number; Yield components. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000300006 |
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| Caires,Eduardo Fávero; Feldhaus,Itacir Cesar; Barth,Gabriel; Garbuio,Fernando José. |
| Root growth and crop yield can be affected by chemical modifications of the soil profile owing to lime and gypsum applications. A field trial was carried out on a dystrophic Clayey Rhodic Hapludox at Ponta Grossa, PR, Brazil, aiming to evaluate lime (without or with incorporation into the soil) and gypsum effects on root growth, mineral nutrition and grain yield of wheat (cv. OR 1). A randomized complete block design was used, with three replications, in a split-plot experiment. Treatments with dolomitic limestone (without lime and 4.5 t ha-1 of lime applied on the surface, in total rate and 1/3 of the requirement per year during 3 years, or incorporated into the soil) were applied in July 1998 (main plots) and the rates of gypsum (0, 3, 6 and 9 t ha-1) in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum L.; Root growth; Calcium; Sulphur; No-tillage system. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000200023 |
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| Caires,Eduardo Fávero; Corrêa,José Cristovão Leal; Churka,Susana; Barth,Gabriel; Garbuio,Fernando José. |
| Crop root growth and grain yield can be affected by chemical modifications in the soil profile due to surface lime application. A field trial was carried out on a loamy dystrophic Typic Hapludox at Ponta Grossa, State of Paraná, Brazil, to evaluate root growth and grain yield of wheat (Triticum aestivum L. cv. CD 104, moderately susceptible to Al), about 10 years after surface liming (0, 2, 4, and 6 Mg ha-1) and three years after surface re-liming (0 and 3 Mg ha-1), in a long-term no-till cultivation system. Soil acidity limited wheat root growth and yield severely, probably as a result of extended water deficits during the vegetative stage. Surface liming caused increases up to 66% in the root growth (0-60 cm) and up to 140% in the grain yield. Root... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum L.; Dolomitic lime; Aluminum; Calcium. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000500013 |
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| Nowak,Michał; Leśniowska-Nowak,Justyna; Zapalska,Magdalena; Banaszak,Zofia; Kondracka,Katarzyna; Dudziak,Karolina; Kowalczyk,Krzysztof. |
| In cereals, the transition from the vegetative stage to flowering is controlled in the main by the set of vernalization genes. Within these genes the most important role is played by VRN1, which encodes a MADS-box transcription factor, regulating the transition of shoot apical meristem to the reproductive phase. The level of vernalization requirement is strongly linked to the molecular structure of this gene. In this study we analyzed molecular mechanisms regulating the vernalization requirement in triticale on the basis of comparative analysis of the VRN1 locus between triticale (×Triticosecale Witt.) and common wheat (Triticum aestivum L.) genotypes. We also estimated the influence of VRN genotype on heading time and the winter hardiness of these two... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: ×Triticosecale Witt.; Triticum aestivum L.; Vernalization; VERNALIZATION 1 gene; Heading time. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000500006 |
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| Camargo,Carlos Eduardo de Oliveira; Ferreira Filho,Antonio Wilson Penteado; Salomon,Marcus Vinicius. |
| Primary root growth is very important for wheat (Triticum aestivum L.) crop in upland conditions in the State of São Paulo. Fourteen wheat genotypes (mutant lines and cultivars) were evaluated for primary root growth during 7 and 15 days of development in complete and aerated nutrient solutions, in the laboratory. In the first experiment, solutions with three pH values (4.0, 5.0 and 6.0) at constant temperature (24 ± 1°C), and in the second experiment, solutions with the same pH (4.0) but with three temperatures (18°C ± 1°C, 24°C ± 1°C and 30°C ± 1°C) were used. High genetic variability was observed among the evaluated genotypes in relation to primary root growth in the first stages of development in nutrient solutions independent of pH, temperature and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum L.; Upland crop; Root growth. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000300013 |
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| Dodig,Dejan; Zorić,Miroslav; Mitić,Nevena; Nikolić,Radomirka; King,Stephen R.; Lalević,Blao; urlan-Momirović,Gordana. |
| Availability of immature embryos as explants to establish wheat (Triticum aestivum L.) by tissue culture can be limited by climatic factors and the lack of high quality embryos frequently hampers experimentation. This study evaluates the effects of rainfall, various temperature-based variables and sunshine duration on tissue culture response (TCR) traits including callus formation (CF), regenerating calli (RC), and number of plants per embryo (PPE) for 96 wheat genotypes of worldwide origin. The objectives of this study were to evaluate the significance of a particular climatic factor on TCR traits and to determine the period of wheat growth during which these factors were the most effective. The genotypes were grown in an experimental field during three... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum L.; Biplot; Correlation analysis; Environment variable; Growth period. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000300007 |
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| Valério,Igor Pirez; Carvalho,Fernando Irajá Félix de; Oliveira,Antônio Costa de; Benin,Giovani; Souza,Velci Queiroz de; Machado,Amauri de Almeida; Bertan,Ivandro; Busato,Cyrano Cardoso; Silveira,Gustavo da; Fonseca,Daniel Andrei Rob. |
| Seeding density adjustments is one of the practices that most influence grain yield, as well as other agronomic traits. Therefore, the objective of this study was to determine the ideal plant stand to achieve the maximum grain yield in genotypes showing differential tillering ability. Also, to establish the associations between the genotypes used with tillering and other agronomically important traits as weight of a thousand grains. Two experiments were conducted in 2005 and 2006 in Capão do Leão, Rio Grande do Sul state, Brazil. Five low (JURITI, BR 18, CEP 29, BR 18 and CD 108) and five high (CD 114, SAFIRA, FIGUEIRA, BRS 177 and UMBU) tillering potential wheat cultivars were tested for two years on a split-plot design. The results indicate the need for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum L.; Grain yield; Number of fertile tillers; Plant stand. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000100004 |
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| Andrade V.,Orlando. |
| Near the end of the 1994/95 season, in different localities of the IXth Region, Chile, a high incidence of lodged wheat (Triticum aestivum L.) fields were observed, with up to 70% of some fields having white spikes, rotten and broken stems at the base. The microscopic observation of affected tissue of wheat cvs. SNA 400 and Francia, collected near Traiguén (IX Region), as well as the isolates obtained in agar-water + streptomycin sulfate permitted the observation of slow-growing, green-grayish colonies with smooth borders and the presence of needle-like, straight or curved, hyaline conidia, with 4 to 6-septated spores, occasionally 7 septated spores, and with a length of 40.9-81.9 µ m and diameter of 1.6-2.3 µ m. Pathogenicity tests carried out with the... |
| Tipo: Journal article |
Palavras-chave: Eyespot; Wheat diseases; Pseudocercosporella herpotrichoides; Triticum aestivum L.; Mancha ocular; Enfermedad en trigo; Pseudocercosporella herpotrichoides; Triticum aestivum L.. |
| Ano: 2003 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072003000400004 |
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| Mellado Z.,Mario; Madariaga B.,Ricardo. |
| Pandora - INIA es un cultivar de trigo (Triticum aestivum L.) de primavera creado por el Proyecto Trigo del Instituto de Investigaciones Agropecuarias (INIA), en el Centro Regional de Investigación Quilamapu, Chillán, Chile, a partir de un cruzamiento efectuado en 1989. Es un trigo semienano con una altura de planta de 90 - 95 cm. El grano es de color café obscuro y de forma ovada. La espiga es blanca y barbada. En experimentos su rendimiento ha variado entre 7,5 y 10,8 t ha -1. El promedio de volumen de pan, valor de sedimentación y proteína del grano fueron, 722 cm³, 41,6 cm³, y 11,1% respectivamente, lo que clasifica este cultivar como de panificación directa. |
| Tipo: Journal article |
Palavras-chave: Trigo de primavera; Triticum aestivum L.; Nuevo cultivar; Pandora - INIA. |
| Ano: 2003 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072003000300011 |
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| Bainotti,C.; Cuniberti,M.; Masiero,B.; Donaire,G.; Gómez,D.; Reartes,F.; Salines,J.; Formica,M.; Fraschina,J.; Nisi,J.; Mir,L.; Berra,O.. |
| Sprouting or germination in wheat takes place as a result of the rupture of the dormancy in grain, expressed in physiological terms as the increase of α-amylases and proteases activity, which has been associated with low values of falling number. Grain sprouting has been related with high moisture and temperature at harvest and it is a serious problem in the north of Argentina. The objectives of this study were to characterize introduced and local wheat cultivars for sprouting response through falling number and, tentatively, to identify adapted materials with good behavior for this trait. A set of thirty introduced and local late and early heading wheat varieties was tested through falling number in two experiments conducted at Marcos Juárez,... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Triticum aestivum L.; Pre-harvest sprouting; Falling number. |
| Ano: 2009 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2009000100005 |
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| Registros recuperados: 125 | |
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