Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 3 de 3
Filter
Add filters








Year range
1.
Braz. j. biol ; 79(3): 404-409, July-Sept. 2019. tab
Article in English | LILACS | ID: biblio-1001466

ABSTRACT

Abstract Passion fruits species presents a larger economic importance for in natura consumption and industry. The main way to propagate these species is by seeds; however, the aril presence and environmental conditions may inhibit the seeds germination. In this sense, the objective of this study was to evaluate the effect of aril removal methods and light conditions on P. edulis var. flavicarpa seeds quality and germination. There were used five methods to remove the seeds aril: (1) friction on steel mesh sieve for 5 minutes; (2) friction with coarse sand on steel mesh sieve for 5 minutes; (3) immersion in lime solution at 10% (w/v), for 30 minutes; (4) fermentation in sugar solution at 10% (w/v), during 48 hours; and (5) natural pulp fermentation, during five days. The seeds were submitted to germination test at darkness and lightness, as well as, to length seedlings and emergence test. Regardless the aril removal method, the germination percentage was lower at lightness than darkness highlighting the natural pulp fermentation treatment, which presented 86% of seeds germinated. On the other hand, the aril removal methods did not affect the seedlings emergence, with emergence percentages ranged from 88 to 94%.


Resumo As espécies de maracujá apresentam grande importância econômica, tanto para o consumo in natura, quanto para a indústria. A principal maneira de propagar essas espécies é por sementes; contudo, a presença de arilo e condições ambientais pode inibir a germinação. Nesse sentido, objetivou-se estudar o efeito de métodos de remoção do arilo e luminosidade na qualidade e germinação das sementes de Passiflora edulis var. flavicarpa. Cinco métodos foram empregados para a remoção do arilo: (1) fricção em peneira de malha de aço por cinco minutos; (2) fricção com areia grossa em peneira de malha de aço por cinco minutos; (3) imersão em solução de cal a 10% (m/v), por 30 minutos; (4) fermentação da polpa em solução de açúcar a 10% (m/v), por 48 horas; e (5) fermentação natural da polpa, por cinco dias. As sementes foram submetidas ao teste de germinação no escuro e no claro, teste de comprimento de plântulas e teste de emergência. Independente do método de remoção do arilo, a porcentagem de germinação no claro apresentou-se menor em comparação ao escuro, com destaque para o tratamento de fermentação natural da polpa, o qual apresentou 86% de sementes germinadas. Por outro lado, os métodos de remoção do arilo não afetaram a emergência das plântulas, com porcentagem de emergência variando entre 88 a 94%.


Subject(s)
Seeds/physiology , Germination/physiology , Passiflora/physiology , Flowers/physiology , Seeds/growth & development , Seeds/radiation effects , Passiflora/growth & development , Passiflora/radiation effects , Seedlings/physiology , Light
2.
Braz. j. med. biol. res ; 35(3): 297-303, Mar. 2002. ilus, tab
Article in English | LILACS | ID: lil-304679

ABSTRACT

We report the detection of insulin-like antigens in a large range of species utilizing a modified ELISA plate assay and Western blotting. We tested the leaves or aerial parts of species of Rhodophyta (red alga), Bryophyta (mosses), Psilophyta (whisk ferns), Lycopodophyta (club mosses), Sphenopsida (horsetails), gymnosperms, and angiosperms, including monocots and dicots. We also studied species of fungi and a cyanobacterium, Spirulina maxima. The wide distribution of insulin-like antigens, which in some cases present the same electrophoretic mobility as bovine insulin, together with results recently published by us on the amino acid sequence of an insulin isolated from the seed coat of jack bean (Canavalia ensiformis) and from the developing fruits of cowpea (Vigna unguiculata), suggests that pathways depending on this hormone have been conserved through evolution


Subject(s)
Animals , Cattle , Fungi , Insulin , Plant Proteins , Proto-Oncogene Proteins c-bcl-2 , Rhodophyta , Bacterial Proteins , Blotting, Western , Electrophoresis, Polyacrylamide Gel , Enzyme-Linked Immunosorbent Assay , Fungi , Molecular Weight , Plant Proteins , Rhodophyta
3.
Rev. chil. obstet. ginecol ; 55(4): 254-9, 1990. ilus
Article in Spanish | LILACS | ID: lil-98170

ABSTRACT

Se estudió el efecto in vitro de ritodrine (28,7 ng/ml), fenoterol (30,0 ng/ml), verapamil (43 ng/ml), nifedipino (34,6 ng/ml) y sulfato de magnesio (6 meq/lt) sobre la actividad contráctil espontánea y evocada por prostaglandina PGF 2* en cuernos uterinos de ratones con 15 días de gestación. El rango de concentraciones usadas fue cercana a los niveles plasmáticos efectivos alcanzados para cada tocolítico respectivamente. A las dosis señaladas, la actividad contráctil espontánea fue completamente abolida por los tocolíticos investigados. En cambio, las contracciones evocadas por PGF 2* fueron inhibidas solamente por ritodrine, fenoterol y nifedipino. Se discuten posibles mecanismos involucrados en estas interacciones


Subject(s)
Mice , Animals , Female , Tocolytic Agents/pharmacology , In Vitro Techniques , Myometrium/drug effects , Pregnancy/drug effects , Prostaglandins/pharmacology , Uterine Contraction/physiology
SELECTION OF CITATIONS
SEARCH DETAIL