Embrapa Hortalicas SPM

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Embrapa Hortalicas SPM

Science, Brazil
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Carvalho A.D.F.,Embrapa Hortalicas | Nogueira M.T.M.,Federal University of Uberlandia | Silva G.O.,Embrapa Hortalicas SPM | Luz J.M.Q.,Federal University of Uberlandia | And 2 more authors.
Horticultura Brasileira | Year: 2017

We studied the efficiency of selecting carrot genotypes based on phenotypic root characters. Eleven genotypes were evaluated, which included four breeding populations (09; 14; 16 and 17), one open-pollinated cultivar (BRS Planalto), five experimental hybrids (17; 20; 03; 27 and 31) and a commercial hybrid (Juliana). The experiment was carried out during the summer crop of 2014 (sown January 30th and harvested after 113 days) in Uberlandia, Minas Gerais State, Brazil. A randomized block design with four replications was used. We estimated genotypic values, direct gains, the effect of direct selection on other characters, and gains related to the selection index of the distance to the biotype. We determined that the simultaneous selection of total root mass, commercially-viable root mass, root diameter, high percentage of cylindrical roots, high percentage of roots without green shoulders and high percentage of dark-orange roots led to positive gains in all characters. Direct selection produced the greatest gains in each character; however, total root mass, percentage of cylindrical roots, percentage of roots without green shoulders and percentage of dark-orange roots led to lower gains in other characters. The best genotypes considering all characters were populations 14, 16 and 17. © 2017, Sociedade de Olericultura do Brasil. All rights reserved.


Amaro G.B.,Embrapa Hortalicas | Fernandes F.R.,Embrapa Quarentena Vegetal | Silva G.O.,Embrapa Hortalicas SPM | Mello A.F.S.,Embrapa Hortalicas | Castro L.A.S.,Embrapa Clima Temperado
Horticultura Brasileira | Year: 2017

The sweet potato (Ipomoea batatas) is one of the main vegetables grown in Brazil. The aim of this work was to evaluate the agronomic performance of Embrapa sweet potato cultivars in the region of Paranaíba, Minas Gerais State, Brazil. The experiments were carried out under field conditions in commercial crops from December 12, 2012 to May 14, 2013 and December 11, 2013 to May 13, 2014. Two experiments were carried out in randomized blocks design with four replications to evaluate eight cultivars (BRS Amelia, Beauregard, Brazlândia Branca, Brazlândia Rosada, Brazlândia Roxa, BRS Cuia, Princesa and BRS Rubissol). Characters related to root dry mass production are highly influenced by the environment, as observed by the ranges of the coefficient of variation from 9.23% of commercial roots mass in relation to total root dry mass and 29.25% to total root mass. No significant differences among cultivars were found for total root mass, average commercial root mass and root shape. The cultivars performed equally well in the two crops. Nevertheless, Brazlândia Roxa, Brazlândia Branca and Beauregard out yielded the rest of the cultivars in 2013, achieving 24.62, 21.25 and 20.69 t/ha respectively. Brazlândia Roxa and Beauregard also showed adequate indexes of root shape and resistance to insects, especially Brazlândia Roxa with a 1.5 score in the two years of evaluation. Among the evaluated cultivars, Beauregard is a good option to the producers of Alto Paranaíba, but the Brazlândia Roxa cultivar, presenting root characteristics that are desirable to the local market preferences with elongated shape, pulp color and purple skin, is the most suited to this region. © 2017, Sociedade de Olericultura do Brasil. All rights reserved.


The market demand for uniformity and productivity of commercial carrot roots has prioritized hybrid materials instead of open pollinated varieties. In this sense, the objective of this study was to estimate the ability of combining carrot progenitors for the characters root yield and tolerance to leaf blight. The experiments were carried out at Gama-DF, during the 2012-13 and 2013-14 season. Thirty-three carrot hybrids, originated from crosses among three male-sterile populations and 11 male-fertile S2 lines from tropical origin were assessed. At 90 days after sowing, the incidence of leaf blight disease was evaluated in the plots. At 100 days after sowing, the plants were harvested and root yield characters were evaluated. The analysis of variance was performed and the effects of general combining ability (GCA) and specific combining ability (SCA) were estimated. It was verified that both additive and non-additive genes are important to express characters of root yield and leaf blight tolerance. The male-sterile progenitors with higher general combining ability for root yield are the LM-649 and LM-650 lines, and among the male-fertile, the LM-555-2 line is the highest. The best hybrids for root yield and tolerance to leaf blight are LM-649 × LM-555-11-1, LM-650 × LM-555-7-1 and LM-650 × LM-554-8-1.


da Silva G.O.,Embrapa Hortalicas SPM | Suinaga F.A.,Embrapa Hortalicas | Ponijaleki R.,Embrapa Produtos e Mercado | Amaro G.B.,Embrapa Hortalicas
Revista Ceres | Year: 2015

In Brazil, the average yield of sweet potato is consistently below the potential of the crop due to the cultivation of local varieties and unimproved genotypes. Increase in yield is achieved by the adoption of appropriate cultural practices and use of more productive cultivars. Thus, the aim of this study was to evaluate the performance of root yield traits in sweet potato cultivars. Six sweet potato cultivars were evaluated: Princesa, BRS Amelia, BRS Cuia, Brazlândia Roxa, Beauregard and BRS Rubissol in an experiment conducted in Canoinhas-SC. These cultivars were planted in the field, in the agricultural years 2012 and 2013, in a randomized block design with three replications and plots consisting of 11 plants. At 150 days after planting, the plants were harvested and the root yield components were evaluated. In general, the cultivars assessed in this study are good choices for sweet potato growers, with yields greater than the country's average. Cultivars Beauregard and BRS Rubissol showed the best results for the traits related to root yield. Cultivars Princesa, BRS Amelia and BRS Cuia showed intermediate performance for commercial roots, especially in the second year of the assessment. The cultivar Brazlândia Roxa had the worst performance for yield root characters at 150 days after planting, which was probably due to its longer cycle.


Nascimento W.M.,Embrapa Hortalicas | Andrade K.P.,Embrapa Hortalicas | Freitas R.A.,Embrapa Transferencia de Tecnologia | Silva G.O.,Embrapa Hortalicas SPM | Boiteux L.S.,Embrapa Hortalicas
Horticultura Brasileira | Year: 2016

Exploitation of the existing genetic variability in tomato germplasm via breeding strategies is one alternative to improve the germination under adverse environmental conditions and to provide seeds with better quality and performance. The rate and percentage of germination of tomato seeds are influenced by several genetic and environmental factors. Temperature is one of the major factors capable of influencing tomato seed germination parameters. In the present work, the female and male inbred lines of four fresh-market tomato hybrids (San Vito, Duradoro, Finestra, and Fontana) as well as the reciprocal (maternal line x paternal line and paternal line x maternal line) F1 crosses were evaluated for seed quality traits and germination ability at different temperatures. The seed traits were evaluated using five tests: mass of 1000 seeds; germination at 15°C, 25°C, and 35°C; first count at 15°C, 25°C and 35°C, accelerated aging, and seedling emergence. Higher temperatures (35°C) decreased the germination in all evaluated accessions. Significant effects of the inbred lines on performance of the hybrids were observed for germination at different temperatures as indicated by the analysis of the reciprocal crosses. Maternal (female) effects were observed for some traits in the hybrids San Vito and Fontana. Male effects were observed for the hybrid Finestra. Heterotic effects were observed for some traits in the hybrids San Vito and Finestra. © 2016, Sociedade de Olericultura do Brasil. All rights reserved.


da Silva G.O.,Embrapa Hortalicas SPM | Pereira A.S.,Embrapa Clima Temperado | Suinaga F.A.,Embrapa Hortalicas | Ponijaleki R.,Embrapa Produtos e Mercado
Horticultura Brasileira | Year: 2013

The objective of this study was to identify the best time of desiccation of plants to promote skin quality without detriment of potato cultivar BRS Clara. The experiment was carried out at Embrapa Produtos e Mercado, Canoinhas, Santa Catarina state, Brazil. 'Agata' was used as the control cultivar. The treatments were four desiccation times (90, 95, 100, and 105 days after planting), in spring season. The experimental design was randomized blocks with four replications. Each plot consisted of four rows of ten plants each. Ten days after desiccation of plants, the two internal rows of each plot were harvested and the tubers evaluated for yield component, skin roughness, and tone coloration of tuber skin. The data were submitted to analysis of variance and regression. For BRS Clara, a desiccation of the plants should be done earlier to avoid losses in quality of the skin, especially in relation to the roughness of the tubers. The maximum date for desiccation was 100 days after planting of tubers to obtain tubers with skin quality and no further reduction in yield of tubers. For the control cultivar Agata, that presented better tuber appearance than BRS Clara, but lower yield, delaying the desiccation date up to 100 days of planting also seems appropriate, but not due to loss of quality of the skin, but by having reached the maximum yield.


Silva G.O.,Embrapa Hortalicas SPM | Pereira A.S.,Embrapa Clima Temperado | Suinaga F.A.,Embrapa Hortalicas | Ponijaleki R.,Embrapa Produtos e Mercado
Horticultura Brasileira | Year: 2014

The aim of this research was to study the possibility of decreasing the amount of nitrogen recommended based on the soil analysis for the potato cultivar BRS Ana, considering yield component variables. The experiment was carried out in Haplustox soil, in the experimental field of Embrapa Produtos e Mercado, Canoinhas, Santa Catarina state, Brazil, in the spring season. The treatments consisted of six nitrogen doses applied at planting time (0, 60, 80, 100, 120 and 140 kg ha-1), as ammonium sulphate. The recommended dose of N based on soil analysis was 120 kg ha-1. A randomized complete block design with four replications was used. The tuber yield of each plot was evaluated for yield component variables. Plants of BRS Ana did not respond considerably in yield to nitrogen levels higher than 100 kg ha-1, suggesting that the dose recommended by the soil analysis, 120 kg ha-1, can be reduced in 17%, without loss of yield of tubers. A larger decrease in the amount of nitrogen, however, would cause a reduction in the commercial tuber yield.


da Silva G.O.,Embrapa Hortalicas SPM | da Silva Pereira A.,Embrapa Clima Temperado | de Nazareno N.R.X.,Instituto Agronomico do Parana | Ponijaleki R.,Embrapa SPM
Revista Ceres | Year: 2015

The objective of this study was to evaluate the performance of elite potato clones for agricultural and processing quality traits. The experiments were carried out in Pelotas, State of Rio Grande do Sul, Canoinhas, State of Santa Cantarina, and Londrina, State of Paraná. A set of elite clones of the Embrapa Potato Breeding Program was evaluated. The experimental design was a randomized complete block, with three replications to Pelotas and Londrina, and four to Canoinhas. This experiment evaluated total mass of tubers, commercial mass of tubers, number of commercial tuber, mass percentage of commercial tuber, average mass of commercial tuber, specific gravity, frying color and vegetative cycle. Analysis of variance for each site and mean grouping test of each trait were performed from the data obtained in the experiment. By examining the results from the perspective of identifying the most suitable clones for fresh market, where high yield potential and early maturity are essential, compared to the control cultivar Ágata, the clones that appeared as the most promising were F80-03-06 and CL02-05. For processing, for which the specific weight, frying color, tuber yield are important traits clone F81-01-06 stood out, despite not having the highest yields, it has large tubers, intermediate vegetative cycle and good suitability for frying, in comparison to the control cultivar Asterix.


Granja N.P.,Instituto Agronomico Of Campinas | Hirano E.,Embrapa Produtos e Mercado | da Silva G.O.,Embrapa Hortalicas SPM
Horticultura Brasileira | Year: 2013

This is to explain and exemplify for the public a method to calculate the Disease Severity Factor to determine limits of tolerance for black scurf, common scab, silver scab, powdery scab and brown eye on the samples of seed potatoes for phytosanitary analysis to meet the Normative Instruction number 32/2012 by Ministry of Agriculture, Livestock and Food Supply, about seed potatoes certification and production.


da Silva G.O.,Embrapa Hortalicas SPM | Stoker G.,Embrapa Produtos e Mercado SPM | Ponijaleki R.,Embrapa Produtos e Mercado SPM | Pereira A.S.,Embrapa Clima Temperado
Horticultura Brasileira | Year: 2013

The performance of the potato cultivars BRS Ana, BRS Clara, and Agata was verified, grown under naturally-induced water stress, in relation to tuber yield. The experiment was carried out in the 2011/2012 season, in the Anta Gorda locality, Canoinhas, Santa Catarina state, Brazil. The experimental design was randomized complete blocks with eight replications, and plots with three rows of 10 plants in each row. One hundred twelve days after planting, the plants of each plot were harvested and evaluated for tuber yield traits. The data were analyzed by variance analysis and grouping of means. The potato cultivar BRS Ana had higher yield of tubers than 'BRS Clara' and 'Agata', but was favored by the rains. 'BRS Clara' and 'Agata', which were most affected by the drought, produced the same number and mass of marketable tubers, though 'BRS Clara' produced tubers with a higher average mass, suggesting a higher tolerance to drought.

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