| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 188.55 KB | Adobe PDF |
Advisor(s)
Abstract(s)
A germinação das sementes depende de diversos fatores. Estes podem ser dependentes da
própria semente: intrínsecos (tais como a constituição da semente ou a sua maturidade e
vitalidade), ou extrínsecos (tais como a luz, a temperatura, a humidade, o oxigénio e as
características do solo). No presente trabalho pretendemos estudar o efeito de um desses fatores
- a luz - na germinação das sementes de rabanete (Raphanus sativus, L.). Sabe-se que certas
sementes só germinam à luz (fotoblastismo positivo), outras só o fazem às escuras
(fotoblastismo negativo) e que outras são indiferentes ao efeito da luz no que se refere à
germinação (fotoblastismo neutro) (Sousa, Braga, Braga & Delachiave, 2008; Ribeiro et al.,
2012). Com o nosso estudo pudemos perceber que as sementes do rabanete apresentam
fotoblastismo neutro.
Seed germination depends on several factors. These may be intrinsic (dependent on the seed itself, such as the creation of own seed, its maturity and vitality) or extrinsic (such as light, temperature, humidity, oxygen and soil characteristics). In this work we intend to study the effect of these factors - light - on seed germination of radish (Raphanus sativus, L.). It is known that some seeds only germinate when in contact to light (positive photoblastism), others do so only in the dark (negative photoblastism) and others are indifferent to the effect of light on germination (neutral photoblastism) (Sousa, Braga, Braga & Delachiave, 2008; Ribeiro et al., 2012). With our study we realized that the radish seeds have a neutral photoblastism.
Seed germination depends on several factors. These may be intrinsic (dependent on the seed itself, such as the creation of own seed, its maturity and vitality) or extrinsic (such as light, temperature, humidity, oxygen and soil characteristics). In this work we intend to study the effect of these factors - light - on seed germination of radish (Raphanus sativus, L.). It is known that some seeds only germinate when in contact to light (positive photoblastism), others do so only in the dark (negative photoblastism) and others are indifferent to the effect of light on germination (neutral photoblastism) (Sousa, Braga, Braga & Delachiave, 2008; Ribeiro et al., 2012). With our study we realized that the radish seeds have a neutral photoblastism.
Description
Keywords
Germinação Semente Luz
Citation
Reis; Diana Filipa Alves; Costa, Ema Matilde Milão; Gonçalves, Jéssica Rodrigues; Cides, Marta Filipa Brás; Rodrigues, Tatiana Mercês (2014). A influência da luz na germinação das sementes de rabanete (Raphanus sativus, L.) = The influence of light on germination of seeds of radish (Raphanus sativus, L.). AdolesCiência: Revista Júnior de Investigação. ISSN 2182-6277. 3:1, p. 22-26
Publisher
Instituto Politécnico de Bragança, Escola Superior de Educação