Soybean is cultivated in the wide range of environments Parana State. Selection for genotypes high and predictable yields with adaptability are main targets breeding programs this region. The stability 30 soybean cultivars three different maturity groups (early, semi-early medium maturity) a focus on grain yield were evaluated crop seasons 1999/2000, 2000/2001 2001/2002 through methodologies, state Parana. experiment had design random blocks 3 replications. performed differently regarding...

For doubled haploid (DH) production in maize, F1 generation has been the most frequently used for induction due to facility process. However, using F2 would be a good alternative increase genetic variability owing additional recombination meiosis. Our goals were compare effect of and generations on DH tropical germplasm, evaluating R1-navajo expression seeds, working steps methodology, lines obtained. Sources germplasm crossed with tropicalized inducer LI-ESALQ. After harvest, both crosses...

O objetivo deste trabalho foi verificar possíveis divergências entre os resultados obtidos nas avaliações da adaptabilidade de 27 genótipos milho (Zea mays L.), e na estratificação 22 ambientes no Estado do Paraná, por meio técnicas baseadas análise fatores regressão bissegmentada. As estratificações ambientais foram feitas método tradicional fatores, aliada ao porcentual porção simples interação GxA (PS%). análises realizadas bissegmentada fatores. Pela bissegmentada, estudados apresentaram...

With the advent of modern agriculture, landrace seeds were replaced by hybrid cultivars, which feature high grain yield potential – though more dependent on intensive technologies. The objective this work was to evaluate maize landraces, in order identify productive materials that can lead a sustainable process grains themselves be used as seed. Fifteen varieties evaluated, with commercial cultivars BR 106 and IPR 114 controls. experiments carried out Arapongas Imbaú (Paraná State), during...

O objetivo deste trabalho foi avaliar a eficiência de diferentes métodos estratificação ambiental, representatividade dos locais avaliação, e adaptabilidade estabilidade genótipos soja, por meio ensaios produtividade grãos, nos estados do Paraná Santa Catarina, anos agrícolas 2000 2003, em um total 15 ambientes. Foram utilizados, para o método tradicional Lin análise fatores aliada ao porcentual parte simples (PS%) da interação genótipo vs. ambiente (GxA). Na determinação genótipos, foram...

Com o objetivo de correlacionar a heterose, estimada através cruzamentos dialélicos, com divergência genética obtida pelo uso marcadores moleculares RAPD, oito populações milho-pipoca (1-PASHA, 2-PAPA, 3-PAAPC, 4-PO, 5-ZL, 6-CMS 042, 7-RS 20 e 8-CMS 43) foram intercruzadas em esquema dialélico completo, sem recíprocos, no ano agrícola 2002/2003, gerando 28 híbridos. A avaliação dos híbridos foi realizada 2003/2004, Londrina Ponta Grossa, PR, um ensaio trinta tratamentos, constituídos vinte...

The objective of this work was to evaluate the genetic diversity 16 maize inbred lines, and determine correlation between distance hybrid performance, using random amplified polymorphic DNA (RAPD) molecular markers. Twenty-two different primers were used, which resulted in amplification 265 fragments, 237 (84.44%) them being polymorphic. A similarity matrix created from RAPD data, Jaccard coefficient, a dendrogram constructed. Hybrid analyses carried out block design Griffing method VI for...

The oat cultivar IPR Afrodite, resulting from a cross between CFT 2 and the inbred line ER 88144-1, is high-yielding, has grain quality traits that are relevant for food processing industry, resistant to root-knot nematode species Meloidogyne incognita, M. javanica, paranaensis enterolobii.

Abstract Plant breeders widely use recurrent selection schemes to increase the frequency of favorable alleles for quantitative traits in a population. Although simultaneous is complex because it involves several combined with cycles, indexes (SI) applied chance success breeding program. Despite many indices are available literature, simulations can help determine which index be better adjusted considering goals, intensity, and genetic correlation among over cycles. In this context, we...

The objective of this study was to estimate the genetic parameters IPR 114 maize commercial variety for breeding purpose and efficiency method. It perfomed two cycles half-sib progenie, between 2004 2007. progenies were evaluated in a randomized complete block desing with replications per environments plots composed one 4 m length row spaced on 0.8 m, five plants meter. trials carried out Londrina Ponta Grossa, Paraná State, Brazil. There 173 154 selection 1 2, respectively, analyzing...

The purpose of this study was to investigate the diversity 14 popcorn populations and a broad genetic base tester using molecular RAPD markers estimate correlation between distances performance top-cross hybrids. For evaluation hybrids resulting from topcrosses, reduced model Gardner used. A distance matrix generated based on by Jaccard coefficient, dendrogram constructed. In general, topcrosses performed better than per se evidenced heterosis occurrence in topcrosses. trait grain weight is...

Abstract Plant breeders widely use recurrent selection schemes to increase the frequency of favorable alleles for quantitative traits in a population. Although simultaneous is complex because it involves several combined with cycles, indexes (SI) applied chance success breeding program. Despite many indices are available literature, therefore, simulations can help determine which index be better adjusted considering goals, intensity, and genetic correlation among over cycles. In this...

O objetivo deste trabalho foi entender a frutificação e o desenvolvimento da aceroleira das cultivares "Dominga" (UEL-3), "Lígia" (UEL-4) "Natália" (UEL-5) nas condições de Londrina (PR), em três épocas florescimento. A porcentagem obtida partir relação entre número flores marcadas, polinizadas naturalmente frutos maduros colhidos. Foi estudada duração dias nos estádios botão, flor, crescimento fruto verde maduro. taxa variou 10,7% 32,7% para as no florescimento outubro/novembro (UEL-3)...

The objective of this study was to evaluate the performance 15 maize cultivars in seven locations Paraná State, Brazil. Towards aim, grain yield trials were conducted during two crop seasons, and centroid (multivariate) bissegmented regression (univariate) methods used possible divergences among results obtained. genotypes evaluated randomized complete blocks with three replications. method effective for indicating productive potential genotypes, allowing classification genotype adaptability...

The objectives of the present work were directed towards study genetic variability in seven maize populations with a broad base, as guide for population improvement. field evaluation was conducted completely randomized blocks, at one location (Anhembi, São Paulo state) different groups S1 families obtained from (GO-D: dent type, GO-F: flint GO-L: long ear, GO-G: thick ear; and composites G3, G4 GO-S). Estimates variance (progeny mean basis), phenotypic means, coefficient heritability (broad...

Deep purple is an open-pollinated variety, well adapted to tropical conditions, developed induce maternal haploids in maize. The founders were W23, Stock6, and experimental maize population. inducer population inherits the dominant R1-nj marker, expected real haploid induction rate 3%.

Conhecer a variabilidade genética existente entre cultivares de trigo (Triticum aestivum) é grande importância para os programas melhoramento. Desta forma, esse trabalho teve como objetivo utilizar marcadores ISSR acessar diversidade acessos contrastantes trigo. Para isso, foram avaliados 32 e um acesso triticale provenientes do Banco Ativo Germoplasma Trigo Instituto Desenvolvimento Rural Paraná (IDR-Paraná). A partir 10 primers amplificados total 66 loci polimórficos com variação média por...

In many agricultural crops, the number of parents used in cross breeding make it difficult to obtain all possible hybrids diallels. Therefore, using maize as a model plant and based on traits with high low heritabilities, aim present study was quantify correlation estimates general combining ability (GCA) specific (SCA) between complete diallel circulant diallel, without inclusion parents. For heritability trait, GCA can be obtained s values, whereas for SCA estimates, values close half...

The characterization of maize landraces is extremely important in breeding programs for use these genotypes as sources genetic variability. objective this study was to quantitatively characterize 28 populations from the state Paraná using estimates effects varieties and heterosis parents general combining ability, thereby assessing main agronomic traits. In crop 2008/09, 56 inter-varietal hybrids, obtained through a topcross, three check were evaluated female flowering (FF), plant height...

In the summer season of 2004/2005, 12 intervarietal maize hybrids, crossed by partial diallel scheme 3 x 4, seven parental populations and three checks were evaluated at Iapar Experimental Stations in Londrina, Pato Branco, Ponta Grossa e Guarapuava. The objective was to identify crosses for future work with recurrent selection, inbred lines extraction composite synthesis. For Heterosis variation cause, differences determined (P < 0.01) traits grain yield female flowering, indicating that...