Selfing
Mostrando 1-12 de 120 artigos, teses e dissertações.
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1. Inferring mating system parameters in forage peanut, Arachis pintoi, for Brazilian Amazon conditions
RESUMO A busca por alternativas para aumentar a produtividade e a sustentabilidade da pecuária na região Amazônica sem aumentar o desmatamento é desafiadora. Pastagens consorciadas de gramíneas com amendoim forrageiro (Arachis pintoi) têm mostrado impactos econômicos positivos. Porém, lacunas no conhecimento da biologia reprodutiva do amendoim forrag
Acta Amaz.. Publicado em: 04/11/2019
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2. Post pollination events in a self-sterile hexaploid monoembryonic lineage of Handroanthus serratifolius (Vahl) S. Grose (Bignoniaceae)
ABSTRACT In diploid late-acting self-incompatible (LSI) species of Bignoniaceae, self-pollinated pistils show a marked delay in ovule penetration by pollen tubes, followed by delayed, but otherwise normal, initial stages of endosperm development and subsequent pistil abscission. Most polyploid species of Bignoniaceae are apomictic and set selfed fruits with
Acta Bot. Bras.. Publicado em: 12/09/2019
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3. How to shorten a plant breeding program? A case study with ornamental peppers
Abstract Plant breeding of ornamental peppers (Capsicum spp.) can be supported by biotechnological tools. The objective of this study was to evaluate the efficiency of an in vitro culture of immature zygotic embryos (IZE) to reduce the breeding cycle of ornamental pepper (C. annuum) in comparison to the conventional system. Three ornamental pepper genotypes
Crop Breed. Appl. Biotechnol.. Publicado em: 01/08/2019
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4. Multivariate estimate of heritability for quality traits in tomatoes by the multiple factor analysis
Resumo: O objetivo deste trabalho foi avaliar uma abordagem de análise de fator múltiplo para estimar a herdabilidade de características de qualidade em tomates (Solanum lycopersicum), tendo como referência os valores de herdabilidade obtidos por meio do método clássico de regressão parental descendente. Foi avaliado um total de 18 famílias de tomate
Pesq. agropec. bras.. Publicado em: 11/04/2019
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5. Breeding system and pollination of Pleroma trichopodum DC. (Melastomataceae): a potential species for the restoration of Atlantic Forest in southern Brazil
ABSTRACT Plant-pollinator interactions and their reproductive implications are of central importance to the organization of plant populations and communities in restoration areas. We studied the breeding system and flower visitors of Pleroma trichopodum, a pioneer species of the Atlantic Forest. We attempted to answer three questions: (1) Is P. trichopodum d
Acta Bot. Bras.. Publicado em: 30/07/2018
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6. Biochemical and physical kernel properties of a standard maize hybrid in different TopCross™ Blends
ABSTRACT A pilot experiment was undertaken in order to examine high oil populations of maize (Zea mays L.) to be used as pollinators in TopCross blends with commercial ZP341 standard hybrid. Five high oil populations (HOPs) from the Maize Research Institute (MRI) gene bank were chosen for this research, according to their high grain oil content, synchrony be
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-12
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7. Resupinate Dimorphy, a novel pollination strategy in two-lipped flowers of Eplingiella (Lamiaceae)
ABSTRACT This work provides a summary of the typical floral structure of subtribe Hyptidinae (Lamiaceae), in which both style and stamens are declinate within or near the concave anterior corolla lobe. Cross-pollination is facilitated by protandry, acting in conjunction with the explosive release of the stamens and pollen. In contrast, we report that in the
Acta Bot. Bras.. Publicado em: 13/03/2017
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8. The efficiency of bees in pollinating ephemeral flowers of Jacquemontia bracteosa (Convolvulaceae)
ABSTRACT The family Convolvulaceae is widely distributed in tropical regions, mainly in open areas. Convolvulaceae flowers are characterized mainly by being beautiful and ephemeral, attracting many flower visitors that belong to different taxonomic groups. This work aimed to investigate the interactions between insects and flowers of Jacquemontia bracteosa (
Iheringia, Sér. Zool.. Publicado em: 20/10/2016
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9. Mating system parameters in Stylosanthes guianensis (Aubl.) Sw. based on RAPD markers
This study investigated the mating systems in Stylosanthes guianensis, an important tropical forage legume. Twelve progenies were analyzed with 21 polymorphic random amplified polymorphic DNA (RAPD) loci. The mating parameters estimated using the mixed mating model showed that this population practices a mixture of selfing (61.4%) and out-crossing (38.6%) fo
African Journal of Biotechnology. Publicado em: 2011
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10. Breeding systems in Echinococcus granulosus (Cestoda; Taeniidae) : selfing or outcrossing?
We used the PCR±SSCP method followed by sequencing in order to assess the genetic variability of coding and noncoding parts of the genome of Echinococcus granulosus (Cestoda; Taeniidae) and to test whether or not the parasite populations are mainly self-fertilizing. For this, we analysed a sample of 110 E. granulosus metacestode isolates collected from diff
Publicado em: 2011
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11. Generation mean analysis of root growth under aluminium-stress hydroponics in the soybeans (Glycine max (L.) Merrill).
There are vast areas in the tropics which are limited in their use by mineral stresses such as aluminium and low available nutrients. The grain crops shall be further adapted if breeding programmes include identification and use of the genetic factors to these hindrances. Three soybean families originated from crosses, selfing and backcrosses among the varie
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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12. In situ and genetic characterization of Gossypium barbadense populations from the states of Pará and Amapá, Brazil.
Abstract ? The objective of this work was to characterize the populations of Gossypium barbadense in the states of Amapá and Pará, Brazil. In situ characterization was conducted through interviews with the owners of the plants and environmental observations. Leaf or petal tissue as well as seed samples were collected for genetic characterization by single
Pesquisa Agropecuária Brasileira. Publicado em: 2011