Consulta: creatorFacets:"Miranda,Rafaela Marques de"
Registros recuperados: 2
Data/hora: 02/06/2024 11:58:53

Extrafloral nectaries of annatto ( Bixa orellana L.): anatomy, nectar composition and activity during organ development
Provedor de dados: 39
Autores: Miranda,Rafaela Marques de; Nery,Lays Araújo; Ventrella,Marília Contin.
ABSTRACT This study aimed to anatomically characterize the extrafloral nectaries (EFNs) of annatto (Bixa orellana) and determine the composition of its nectar in order to better understand their structure and function during organ development. Standard light and scanning electron microscopy techniques were used for anatomical analysis, and test-strips and a refractometer for determining nectar composition. Both receptacle and stem EFNs were found to possess similar anatomy and nectar composition, and to secrete from early to advanced developmental stages of the organs to which they are associated. EFNs consisting of uniseriate epidermis, nectariferous parenchyma and subnectariferous parenchyma were found located where vascular tissue is immersed. Some...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ants; Histochemistry; Nectar release; Secretory structure; Urucum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300468

Physiological quality, anatomy and histochemistry during the development of carrot seeds ( Daucus carota L.)
Provedor de dados: 64
Autores: Miranda,Rafaela Marques de; Dias,Denise Cunha Fernandes dos Santos; Picoli,Edgard Augusto de Toledo; Silva,Patrícia Pereira da; Nascimento,Warley Marcos.
ABSTRACT The adequate time for carrot seed harvest influences its physiological quality. The objective of this study was to evaluate physiological, anatomical and histochemical changes in carrot seeds harvested at different stages of development and to establish the most appropriate harvest time. Secondary umbels were harvested at 14, 21, 28, 35, 42, 49, 56 and 63 days after anthesis (DAA). For seed anatomical and histochemical characterization, sections were stained with Toluidine blue stain, Xylidine Ponceau, Lugol’s iodine, Sudan Black B and submitted to polarized light. Seed moisture content, seed dry matter, germination, first count, emergence percentage and emergence speed index of seedlings were evaluated. Cultivar Brasília carrot seeds at 14 DAA...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Maturity; Harvest; Reserve substances; Germination; Vigor.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200169