67 documents found, page 1 of 7
Selection of tomato lines and populations for fruit shape and resistance to tom...
Resende,Nathalia CV; Silva,Alex Antonio da; Maluf,Wilson Roberto; Resende,Juliano Tadeu V de; Zeist,Andre Ricardo; Gabriel,AndréABSTRACT The market requirement regarding fruit type varies from region to region and it is necessary to produce cultivars with different patterns of fruit morphology. Therefore, the aim of this study was to select lines with resistance to tomato leafminer and different fruit shapes in order to meet the different market segments. Seventy-six lines and pre-selected populations were used for pest resistance toget...
Energy and budget balances for sweet potato-based ethanol production
Lima e Silva,Luis Felipe; Gonçalves,Wilson Magela; Maluf,Wilson Roberto; Resende,Luciane Vilela; Lasmar,André; Carvalho,Régis de Castro; Licursi,VicenteAbstract: The objective of this work was to assess the viability of sweet potato (Ipomoea batatas) for ethanol production, as well as to estimate the energy and budget balances for the crop. Data from the agricultural and industrial production phases were evaluated. Those from the agricultural phase were estimated from a field experiment and used for comparison of sweet potato genotypes. Those from the industri...
Diallel analysis and heterosis components in paprika peppers
Lasmar,André; Maluf,Wilson Roberto; Ticona-Benavente,César Augusto; Nogueira,Douglas William; Nogueira,Danilo GustavoABSTRACT The aim of this study was to quantify and assess the components of heterosis in paprika hybrids related to yield, capsanten pigment content (estimated as ASTA degrees) and resistance to Phytophthora capsici, and to identify parental lines with high general combining ability (GCA) to be used in future breeding programmes and/or to obtain new hybrids. Fifteen hybrids were obtained through a complete dial...
Reaction of common bean to Meloidogyne incognita race 1 and Meloidogyne javanica
Oliveira,Cleiton Lourenço de; Oliveira,Natália Souza; Oliveira,Márcia Souza de; Campos,Vicente Paulo; Maluf,Wilson Roberto; Gomes,Luiz Antônio AugustoABSTRACT Identification of common bean genotypes resistant to the root-knot nematodes may be useful for bean breeding programs. The objective of this study was to evaluate the reaction of bean genotypes to M. incognita race 1 and M. javanica. Two independent trials to assess resistance to both root-knot nematodes were carried out with fifty-eight common bean genotypes and six snap bean genotypes. The experiment...
Heterosis and combining ability in bell pepper lines with resistance to multipl...
Nogueira,Danilo Gustavo; Carvalho,Regis de Castro; Maluf,Wilson Roberto; Nogueira,Douglas Willian; Ticona-Benavente,César AugustoABSTRACT The aim of this study was to develop bell pepper hybrids with resistance to multiple pathogens and make inferences in regard to components of heterosis in hybrids obtained from lines presumed to be resistant to Pepper yellow mosaic virus (PepYMV), Phytophthora capsici, or Meloidogyne incognita. The studies were carried out in a greenhouse. We used ten lines, thirty experimental hybrids, and seven contr...
Resistance of tomato plant genotypes with high foliar allelochemical contents t...
Silva,Alex Antônio da; Andrade,Marcela Carvalho; Maluf,Wilson Roberto; Moraes,Jair Campos; Rezende,Jéssica FigueiredoABSTRACT: The objective of this study was to assess the resistance of tomato genotypes with high foliar levels of allelochemicals to the leafminer Liriomyza trifolii. Eight tomato genotypes with contrasting levels of three different alellochemicals were tested for leafminer resistance: the TOM-687 and TOM-688 lines, which are both rich in acylsugar; ZGB-703 and ZGB-704, which are rich in zingiberene; BPX-365G-8...
Energy balance of biodiesel production from canola
Silva,Luis Felipe Lima e; Gonçalves,Wilson Magela; Maluf,Wilson Roberto; Resende,Luciane Vilela; Sarmiento,Christiany Mattioli; Licursi,VicenteABSTRACT: The aim of the present study was to estimate the energy balance (output/input ratio) of the canola crop for biodiesel production, under Brazilian conditions. Fossil energy expended in the production of 600kg of oil per hectare was 7,146,537kcal. The estimated energy yield per hectare was 9,930,000kcal from the production of 1,500kg ha-1 of seeds (40% oil and 60% oil cake), which resulted in an energy ...
Adjusting the Scott-Knott cluster analyses for unbalanced designs
Conrado,Thiago Vincenzi; Ferreira,Daniel Furtado; Scapim,Carlos Alberto; Maluf,Wilson RobertoAbstract The Scott-Knott cluster analysis is an alternative approach to mean comparisons with high power and no subset overlapping. It is well suited for the statistical challenges in agronomy associated with testing new cultivars, crop treatments, or methods. The original Scott-Knott test was developed to be used under balanced designs; therefore, the loss of a single plot can significantly increase the rate o...
Fruit color and post-harvest shelf life in tomato affected by the ogc, nor A, a...
Poma,Betsabé Antezana; Maluf,Wilson Roberto; Gouveia,Beatriz Tome; Oliveira,Alisson Marcel Souza de; Ferreira,Rodolfo de Paula DuarteAbstract: The objective of this work was to evaluate the effects of the mutant alleles alcobaça (nor A ), ripening inhibitor (rin), and old gold crimson (og c ), in heterozygosity or homozygosity, on the expression of color and on the postharvest quality of fruit of experimental tomato hybrids. Fourteen hybrids with contrasting genotypic constitutions in the nor A , rin, and og c loci were evaluated in a random...
Resistência à Helicoverpa armigera em genótipos de tomateiro obtidos do cruzame...
Silva,Alex Antônio da; Andrade,Marcela Carvalho; Carvalho,Regis de Castro; Neiva,Irã Pinheiro; Santos,Daniela Costa; Maluf,Wilson RobertoResumo: O objetivo deste trabalho foi verificar a resistência à lagarta Helicoverpa armigera (Lepidoptera: Noctuidae), em genótipos de tomateiro obtidos do cruzamento interespecífico de Solanum lycopersicum x S. galapagense, e a associação dessa resistência com a densidade de tricomas glandulares do tipo IV. Genótipos da população F2, derivada do cruzamento S. lycopersicum TOM-684 x S. galapagense LA-1401, sele...