Pollen
Mostrando 1-12 de 1179 artigos, teses e dissertações.
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1. Cytogenetic study and pollen viability of Diatenopteryx sorbifolia Radlk.
RESUMO O número de cromossomos e a caracterização meiótica são importantes para estudos envolvendo variabilidade genética, germoplasma e biodiversidade. Entretanto, espécies florestais nativas não são suficientemente analisadas do ponto de vista citotaxonômico. Dessa forma, o número de cromossomos, o comportamento meiótico e a viabilidade políni
Ciência Florestal. Publicado em: 2022
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2. Viability of pollen grains and stigma receptivity in Desert Rose
Resumo Adenium obesum (Forssk.) Roem. & Schult, conhecida popularmente como rosa-do-deserto, tem se tornado uma opção valiosa para o setor de plantas ornamentais. Na floricultura, a produção de híbridos é priorizada, para isso, o conhecimento da biologia floral e da reprodução sexuada da espécie é fundamental. Objetivou-se com o presente estudo: (1
Ornamental Horticulture. Publicado em: 2022
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3. Different storage temperatures and times on pollen quality in cut rose varieties
Resumo O genitor do pólen é um dos fatores mais importantes que afeta as sementes no melhoramento convencional. A qualidade de pólen de seus genitores deve ser conhecida para o sucesso nos programas de melhoramento. Este estudo foi realizado para conhecer a viabilidade, taxa de germinação e tempo de sobrevivência do pólen de variedades de rosas mantid
Ornamental Horticulture. Publicado em: 2022
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4. In-vitro bioaccessibility of antioxidant properties of bee pollen in Turkey
Abstract The study aims to determine certain physicochemical properties (moisture, ash, titratable acidity, pH, and color), total phenolic content, antioxidant capacity (CUPRAC, ABTS, DPPH) and bioaccessibility of 20 bee pollen samples (10 unpackaged and 10 trademarked products in their original packages) sold in Turkey. The total phenolic content of the bee
Food Sci. Technol. Publicado em: 2021-06
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5. Physicochemical, bioactive properties and antioxidant of Apis mellifera L. honey from western Paraná, Southern Brazil
Abstract The Southern region of Brazil is known for its floral diversity, presenting great potential for bee products such as honey, pollen, propolis and royal jelly. In this study, 67 honey samples provided by beekeepers from 14 municipalities of western Paraná were evaluated. Physicochemical parameters, bioactive compounds and antioxidant activity were an
Food Sci. Technol. Publicado em: 2021-06
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6. Aspects of the reproductive biology of Zingiber spectabile (Zingiberaceae)
ABSTRACT Ginger (Zingiber spectabile) is cultivated worldwide as a floriculture and landscaping species. Studies on the biology and floral morphology of this species are important for its improvement; however, they are scarce. We investigated the reproductive biology and floral morphology of gingers grown in a germplasm bank. Floral development was monitored
Rev. Ceres. Publicado em: 2021-04
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7. Nutritional quality and sensory attributes of date palm spathes beverage supplemented with pollen grains
Abstract The aim of this study was to fortify date palm spathes beverage with pollen grains. The nutritional quality and sensory attributes of the developed products were evaluated. The results showed that pollen grains significantly (P < 0.05) influenced the nutritional and sensory qualities of date palm spathe beverages. With minor exceptions, fortificatio
Food Sci. Technol. Publicado em: 2020-12
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8. Honey sample collection methods influence pollen composition in determining true nectar-foraging bee plants
ABSTRACT This study investigated the suitability of honey sample collection methods for determining the botanical origin of honey through palynological analysis. We used three methods to collect honey samples in three different modes viz. extracted honey using a honey extractor, squeezed honey and pipetted honey (collected by micropipette/dropper from honey
Acta Bot. Bras.. Publicado em: 2020-09
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9. Toward a phylogenetic reclassification of the subfamily Ambavioideae (Annonaceae): establishment of a new subfamily and a new tribe
ABSTRACT A molecular phylogeny of the subfamily Ambavioideae (Annonaceae) was reconstructed using up to eight plastid DNA regions (matK, ndhF, and rbcL exons; trnL intron; atpB-rbcL, psbA-trnH, trnL-trnF, and trnS-trnG intergenic spacers). The results indicate that the subfamily is not monophyletic, with the monotypic genus Meiocarpidium resolved as the seco
Acta Bot. Bras.. Publicado em: 2020-09
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10. Contamination of corn grain for human consumption with transgenic sequences in Paraguay
Abstract Corn is one of the most important economic, social and cultural agricultural products in Paraguay, being the main ingredient of several typical foods. Due to the cross-pollination of this plant, it can be contaminated with transgenic maize pollen found in nearby fields. The general objective of this research was to evaluate the presence of transgeni
Food Sci. Technol. Publicado em: 2020-09
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11. Pollen types of Sapindaceae from Brazilian forest fragments: apertural variation
ABSTRACT Morphological variations in angiosperm pollen grains may aid in the differentiation of families, genera and species. Sapindaceae pollen morphology holds promise for the recognition of taxa of this cosmopolitan family, which is well distributed in tropical regions and possesses great morphological diversity. This study presents the pollen morphology
Acta Bot. Bras.. Publicado em: 2020-06
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12. Pollen sources used by Frieseomelitta Ihering 1912 (Hymenoptera: Apidae: Meliponini) bees along the course of the Rio Negro, Amazonas, Brazil
ABSTRACT Insect pollination has influenced the evolution and diversification of angiosperms. Consequently, knowing plants used as food sources by bees, the most important pollinator group, is the first step toward understanding how their ecological relationships works. Pollen source information is also highly relevant for bee management and associated fruit
Acta Bot. Bras.. Publicado em: 2020-06