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Search Results: 1 - 10 of 19182 matches for " Phaseolus vulgaris L. "
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Physiological Performance of Common Bean Seeds Treated with Bioactivator with and without Moisture Restriction  [PDF]
Andréia da Silva Almeida, Francisco Amaral Villela Villela, Geri Eduardo Meneghello, Cristiane Deuner, Lilian Madruga de Tunes, Paulo Dejalma Zimmer, Adilson Jauer
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.526394
Abstract: The commonbean (Phaseolus vulgaris L.) is an important agricultural crop due to its nutritional properties. Insecticides and fungicides employed to control pests and diseases in the common bean may cause as yet unknown effects on the plant’s morphology and metabolism. Bioactivators are complex organic substances, capable of exerting modification upon growth patterns, plant DNA transcription, gene expression, metabolic enzymes and mineral nutrition. Thiamethoxam insecticide has shown positive action on the enhancement of vigor expression, phytomass accretion and the promotion of deeper root systems. The aim of this work was to evaluate the effect of thiamethoxam on the physiological performance of common bean seeds. Seeds from cultivars Pérola and IAPAR Siriri were treated to thiamethoxam concentrations of 0, 100, 200, 300, 400 and 500 mL·kg-1 seed. Physiological quality was measured through tests for germination value, first count, cold test, accelerated aging and seedling shoot and root lengths, all undertaken in the presence and absence of moisture stress. Thiamethoxam stimulated the physiological performance of common bean seeds under moisture stress or in the absence of it, with levels varying according to cultivar and seed lot. The best physiological seed performance was obtained within the range of 200 mL·kg-1 seed to 400 mL·kg-1 seed.
Avalia??o de linhagens e cultivares de feij?o-vagem de crescimento indeterminado, no município de Areia-PB
Oliveira, Ademar P.;Andrade, Adriano C.;Tavares Sobrinho, José;Peixoto, Nei;
Horticultura Brasileira , 2001, DOI: 10.1590/S0102-05362001000200014
Abstract: fifteen breeding lines (hav 13; hav 14; hav 21; hav 22; hav 25; hav 38; hav 40; hav 41; hav 49; hav 53; hav 56; hav 60; hav 65; hav 67 and hav 68) and eight cultivars (macarr?o favorito ag 480; macarr?o preferido ag 482; manteiga maravilha ag 481; teresópolis ag 484; macarr?o bragan?a; macarr?o trepador topseed; macarr?o trepador hortivale and macarr?o trepador isla) of climbing snap beans were evaluated under field conditions in areia, state of paraiba, brazil. the trial was carried out from march to august, 1999. the best results (high yield, good average weight and low fiber content of pods) were obtained with the breeding lines hav 22 (31.6 t/ha); hav 38 (35.0 t/ha); hav 41 (31.5 t/ha) and hav 68 (30.5 t/ha), and with the cultivars macarr?o favorito ag 480 (30.3 t/ha); macarr?o preferido ag 482 (39.1 t/ha) and manteiga maravilha ag 481 (36.2 t/ha). cultivar teresópolis ag 484 (58.5 t/ha) presented the highest yield. however, the pods were flattened and long; so additional studies are necessary to evaluate the local market preference.
Foliar Application of Calcium and Molybdenum in Common Bean Plants: Yield and Seed Physiological Potential  [PDF]
Denis Santiago Costa, Rafael Marani Barbosa, Julio Storion Oliveira, Marco Eustaquio Sa
Agricultural Sciences (AS) , 2014, DOI: 10.4236/as.2014.511112
Abstract: The foliar application of micro- and macronutrients is often practiced by farmers to improve yield and seed physiological potential. For calcium and molybdenum, positive results have been observed, even in soils with high nutrient content. The purpose of this study was to assess the effects of foliar applications of calcium and molybdenum on yield and seed physiological potential in common bean plants. A randomized block design was implemented, with the treatments fixed in a factorial scheme: two molybdenum rates (with or without) and four calcium rates, with four replications. The calcium rates applied on the leaves were 0, 150, 300 and 600 g·ha-1 for the first year of the investigation (2005) and 0, 300, 600 and 900 g·ha-1 for the second year (2006). In both years, the molybdenum rates applied on the leaves were 0 g·ha-1 (without) and 75 g·ha-1 (with). The results showed that the foliar calcium application, with or without molybdenum, did not improve yield. Foliar application of calcium alone improved seed physiological potential in common bean plants when applied at the full bloom stage.
Teor de cálcio em frutos de diferentes cultivares de feij?o-vagem
Miglioranza, édison;Araujo, Ricardo de;Endo, Romeu Munashi;Souza, José Roberto Pinto de;Montanari, Márcio Adriano;
Horticultura Brasileira , 2003, DOI: 10.1590/S0102-05362003000200007
Abstract: the calcium concentration in the pods of several snap beans was studied in two experiments carried out in 1997 and 1998 in londrina, paraná state, brazil. a randomized complete block design with four replications was used. pods classified as number four (8.3 to 9.4 mm diameter) were assessed. the calcium concentrations in the cultivars xera, paulista, florence, 274, f-15, nerina, anseme and uel-1 were compared by the duncan test at p < 0.05. in the two years analyzed, the xera cultivar presented the greatest calcium concentration with an average of 6.1 mg calcium/g dry matter, while the nerina cultivar showed the lowest concentrations with 4.5 mg calcium/g dry matter. it was concluded that calcium accumulation in the pod was influenced by the genotype of the cultivar regardless of the agricultural year studied.
Coelho, Ant?nio Daniel Fernandes;Cardoso, Ant?nio Américo;Cruz, Cosme Dami?o;Araújo, Geraldo Ant?nio de Andrade;Furtado, Marcos Ribeiro;Amaral, Cláudio Lúcio Fernandes;
Ciência Rural , 2002, DOI: 10.1590/S0103-84782002000200005
Abstract: this work aimed to estimate genetic parameters in f2 populations of the common bean (phaseolus vulgaris l.), cultivated in two traditional seasons in minas gerais state (brazil). the cultivars 'ouro 1919' and 'milinário 1732' were crossed, and the parental, f1 and f2 populations were cultivated in the spring-summer and summer-fall. in the two cultivation seasons, the heritabilities were low for all characters, while the number of pods per plant showed the greatest phenotypic and environmental correlations with grain yield.
Aduba??o nitrogenada na cultura do feijoeiro em plantio convencional
Santi, Ant?nio Luis;Dutra, Luiz Marcelo Costa;Martin, Thomas Newton;Bonadiman, Rafael;Bellé, Gustavo Luiz;Della Flora, Lisandra Pinto;Jauer, Adilson;
Ciência Rural , 2006, DOI: 10.1590/S0103-84782006000400006
Abstract: the beans varietes, ?tps nobre? and ?pérola? were grown during the summer season of 2001/2002, in santa maria, state of rio grande do sul, brazil, with the objectives of study the application timing and spplitting of nitrogem in conventional tillage. the nitrogen was applied at planting (15kg ha-1 in all treatments) a single rate at 14, 21, 28 and 35 dae and at the same times in two applications: 50% + 50% of the dose, 30% + 70% of the dose, 70% + 30% of the dose. the experimental was in randomized blocks design with four replications, with split-plot. it was not verified interaction between time and nitrogen portionin. moreover, ?tps nobre? grain yield was 49% higher than variety pérola. higher grain yield was obtained through the application of nitrogen full rate at 21, however good results were obtained with the portionong of the nitrogen fertilization (50% 14 dae + 50% 21 dae), (70% 14 dae + 30% 28 dae) e (30% 21 dae + 70% 28 dae). the nitrogen application after 28 dae did not provided high grain yields.
Adaptabilidade e estabilidade fenotípica em genótipos de feij?o de cor (Phaseolus vulgaris L.) em três ambientes distintos
Coimbra, Jefferson Luís Meirelles;de Carvalho, Fernando Irajá Felix;Hemp, Silmar;Silva, Simone Alves;
Ciência Rural , 1999, DOI: 10.1590/S0103-84781999000300010
Abstract: in the biennium 1996/97, twenty-one genotypes of colored bean were evaluated, in three environments, to identify and estimate adaptability parameters and phenotypic stability for grains yield. the experimental design was randomized blocks with three replications per treatment. the genotypes revealed highly significant differences among them, in all evaluated environments. in the analysis of joint variance, the genotype effects, environment and the interaction genotype x environments were highly significant, showing differences among genotypes x environment, and the existence of a differentiated behavior among genotypes according to enviromental variation. average grain yields varied from 1321kg.ha-1 to 801kg.ha-1, with on overall average of 1081kg.ha-1. most of the genotypes evidenced high phenotypic stability, specially lp 93-15, lp 93,2, lp 93-38 and rudá, which showed superior average yield compared to the overall yield average, general adaptability and predicted behavior in all the studied enviroments. among the genotypes with grain yield below the overall average an 9022180, lm 93204319, lr 91155315, pf 9029975, pf 9029984 and tb 94-05 presented general adaptability and high phenotipic stability in the environments evaluated.
Controle genético da incompatibilidade do cruzamento entre cultivares andinas e mesoamericanas de feijoeiro comum
Arantes, Lúcio de Oliveira;Ramalho, Magno Antonio Patto;Abreu, ?ngela de Fátima Barbosa;
Ciência e Agrotecnologia , 2008, DOI: 10.1590/S1413-70542008000300041
Abstract: crosses between andean and mesoamerican common beans are usually incompatible. there are doubts about the genetic control of the trait. singh & gutiérrez (1984) reported that two genes are involved in the trait control and that double recessive epistasis occurs. on the other hand, vilarinho (2004) presented results indicating that more than two genes are involved. the present study was carried out to clarify the genetic control of this trait. for this purpose, the andean cultivar 'jalo eep 558' was crossed with 'small white', which is mesoamerican, but compatible with the former one. the mesoamerican cultivar 'mulatinho da vagem roxa' was also crossed with 'small white'. the f1 generation of these two hybrids was crossed with each other. the resulting seeds were sown on the field and the occurrence of incompatibility was evaluated. segregation of 3 (normal) to 1 (incompatible) plants was observed, indicating that there are two genes, dl1 and dl2, as reported by singh & gutiérrez (1984), and that the genotype of the cultivars involved are: 'jalo eep 558' dl1dl1dl2dl2 ; 'mulatinho da vagem roxa' dl1dl1dl2dl2 ; 'small white' dl1dl1dl2dl2 .
Chemical composition as related to seed color of common bean
Silva, Camila Andrade;Abreu, ?ngela de Fátima Barbosa;Ramalho, Magno Antonio Patto;Maia, Lucas Gontijo Silva;
Crop Breeding and Applied Biotechnology , 2012, DOI: 10.1590/S1984-70332012000200006
Abstract: this study aimed to quantify the levels of protein and minerals in common bean lines from the germplasm bank of universidade federal de lavras and to investigate the relationship between color and the mineral and protein contents of the beans. one hundred common bean lines with carioca, black and other grain color patterns were assessed for the protein levels and the mineral contents of phosphorus, potassium, calcium, magnesium, copper, manganese, zinc, and iron. genetic variability was detected among the different groups and also between lines within each group. in general, the protein, iron and zinc contents were highest in the black bean lines. the carioca grain was outstanding for manganese and magnesium and the other grain colors for calcium. positive correlations between most nutrients were observed. this indicates the possibility of obtaining lines with higher nutritional value by selection.
Doses e épocas de aplica??o de nitrogênio e teores foliares deste nutriente e de clorofila em feijoeiro
Carvalho, M. A. C.;Furlani Junior, E.;Arf, O.;Sá, M. E.;Paulino, H. B.;Buzetti, S.;
Revista Brasileira de Ciência do Solo , 2003, DOI: 10.1590/S0100-06832003000300006
Abstract: the effect of n applications (time and rates) on chlorophyll and n contents in bean leaves was evaluated and correlations among them and with the yield established. carried out in the selvíria region, state of minas gerais, brazil, the experiment was set up in a completely randomized block design in a factorial 3 x 5 scheme. treatments consisted in the combination of n (urea) application by side dressing at five levels (0, 35, 70, 105, and 140 kg ha-1 of n) at three times (15, 30, and 15 + 30 days after plant emergence). chlorophyll and n contents in leaves during the full flowering period were determined, as well as yields. all data were correlated to each other and to the n levels. the chlorophyll content presented a positive correlation with n leaf contents and with grain production. the portable chlorophyll meter proved its suitability as a tool to assess the nutritional state of n in bean plants.
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