Open Pollinated
Mostrando 1-12 de 53 artigos, teses e dissertações.
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1. Diallel analysis of popcorn populations for yield, popping expansion and resistance to fall armyworm
ABSTRACT The objective of this study was to estimate the varietal and heterotic effects related to grain yield, popping expansion and resistance of popcorn against fall armyworm. Twelve open-pollinated varieties were intercrossed in a complete diallel mating scheme. The 66 experimental hybrids, together with their parents and controls Zapalote Chico, BRS 103
Rev. Ceres. Publicado em: 2020-08
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2. Adaptability and stability of Coffea canephora Pierre ex Froehner genotypes in the Western Amazon
RESUMO: O desenvolvimento de novas cultivares de Coffea canephora fundamenta-se na caracterização do comportamento diferenciado dos clones em diferentes locais de cultivo. O objetivo deste trabalho foi estudar a interação genótipo x ambientes visando selecionar clones de adaptação ampla e específica à diferentes ambientes da Amazônia Ocidental. Do
Cienc. Rural. Publicado em: 10/01/2020
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3. Growth of radiata pine families in nursery and two years after field establishment
ABSTRACT: Pinus radiata D. Don is the most widely planted exotic species in Australia, Chile, New Zealand and Spain. In this study, growth and survival of P. radiata were compared in 30 open pollinated families grown under two contrasting watering regimes in nursery (well-watered cf. water-stress conditions) and planted on a drought-prone site with Mediterra
Sci. agric. (Piracicaba, Braz.). Publicado em: 05/09/2019
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4. Genetic progress, adaptability and stability of maize cultivars for value of cultivation and use trials
ABSTRACT. Maize breeding programs conduct multi-environment trials every year to assess the performance of new cultivars in pre-releasing tests. The data are combined across sites and seasons to perform a joint analysis in order to obtain information that will help breeders to select the best cultivars for different environments. Beyond this, it is essential
Acta Sci., Agron.. Publicado em: 13/06/2019
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5. Clonal Arabica coffee resistant to Meloidogyne paranaensis and damage threshold on plants development
ABSTRACT: Plants of Coffea arabica Icatu IAC 925 germplasm show resistance to Meloidogyne paranaensis under field conditions, but with variable rates of segregation. One mother plant, IAC 3, of Icatu IAC 925 was evaluated under controlled conditions through the reaction of its clones, obtained by somatic embryogenesis. Reproduction of nematodes in clones wer
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-05
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6. Selection of Eucalyptus grandis families across contrasting environmental conditions
Abstract The objective was to select productive and stable E. grandis families across contrasting sites in Brazil and Uruguay. Survival and growth of 130 open pollinated families were evaluated three years after planting. Survival ranged from 28 to 89% and mean annual increment from 20.5 to 48.4 m3ha- y-1. Low productivity in one site was attributed to unusu
Crop Breed. Appl. Biotechnol.. Publicado em: 11/04/2019
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7. Initial Growth of Pinus taeda by Fertilization Response at Planting
ABSTRACT The objective of this study was to evaluate how the fertilizer composition, type and application method contribute to the initial growth of Pinus taeda applied at planting. Seedlings from an open-pollinated seed orchard of Pinus taeda were planted on a Humic Dystrudepts soil containing 15 treatments of fertilizer application at planting. Basal diam
Floresta Ambient.. Publicado em: 11/03/2019
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8. Reproductive traits and floral visitors of Aechmea distichantha plants growing in different habitats of a South American xerophytic forest
Abstract Aechmea distichantha, a widely-distributed facultative epiphytic bromeliad species, is present from rainforests to xerophytic forests. At its southernmost distribution (Humid Chaco) it grows in the understory and forest edges. This animal-pollinated bromeliad shows high phenotypic plasticity on its vegetative traits, but there is no information abou
Rodriguésia. Publicado em: 2018-06
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9. Genetic Resistance to Rust of Eucalyptus urophylla Progenies
ABSTRACT This study assessed the genetic variability in open-pollinated progenies of Eucalyptus urophylla for resistance to rust (Puccinia psidii). The progeny trial was conducted on a statistical randomized block design with 20 progenies, five plants per plot, and nine replications. Analysis of variance showed high genetic variability for the studied trait,
Floresta Ambient.. Publicado em: 01/02/2018
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10. Quantitative genetics theory for genomic selection and efficiency of genotypic value prediction in open-pollinated populations
ABSTRACT: Quantitative genetics theory for genomic selection has mainly focused on additive effects. This study presents quantitative genetics theory applied to genomic selection aiming to prove that prediction of genotypic value based on thousands of single nucleotide polymorphisms (SNPs) depends on linkage disequilibrium (LD) between markers and QTLs, assu
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-02
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11. Quantitative genetics theory for genomic selection and efficiency of breeding value prediction in open-pollinated populations
ABSTRACT To date, the quantitative genetics theory for genomic selection has focused mainly on the relationship between marker and additive variances assuming one marker and one quantitative trait locus (QTL). This study extends the quantitative genetics theory to genomic selection in order to prove that prediction of breeding values based on thousands of si
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-06
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12. Flowering traits in tetraploid Brachiaria ruziziensis breeding
Abstract Tetraploid Brachiaria ruziziensis genotypes which reproduce sexually are essential for the breeding of other species of the Brachiaria genus which reproduce by apomixis. Aiming at studying the available phenotypic and genetic variability in the breeding population of B. ruziziensis, it was estimated the parameters heritability and genetic and phenot
Crop Breed. Appl. Biotechnol.. Publicado em: 2016-06