ISABELA SCHMITT BERKENBROCK's scientific contributions

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Publications (1)

Efeito da luz na germinação e no crescimento inicial de Maytenus robusta Reiss. e Hedyosmum brasiliense Mart.
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December 1999

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423 Reads

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10 Citations

Revista Brasileira de Sementes

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ISABELA SCHMITT BERKENBROCK

The aim of this research was to study the effect of light on the seed germination and early growth of Maytenus robusta Reiss. (Celastraceae) and Hedyosmum brasiliense Mart. (Chloranthaceae), forest species of medicinal interest. The germination of the seeds was verified under light and dark and the growth of plants verified under three shading levels (30, 50 and 75%). The germination of seeds of M. robusta occurred both in light and dark and the growth of seedlings was better at higher light levels, suggesting behaviour of early successional species. Seeds of H. brasiliense were fotoblastic positive, behaviour usually found in pioneer species, but the growth of seedlings was inhibited at higher light levels, indicating that the seedlings have not a behaviour of early successional species.

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Citations (1)

... O fotoblastismo neutro, observado nas duas espécies em estudo, também foi constatado em sementes florestais por outros autores como Berkenbrock & Paulilo (1999) com Maytenus robusta; Santos et al. (2005) Ferraz & Calvi (2010) consideram que a maioria das espécies florestais produzem sementes fotoblásticas neutras, germinando tanto na presença como na ausência de luz, embora vários fatores como temperatura, idade das sementes, condições de armazenamento, procedência do lote, baixo potencial de água no solo e tratamentos para superar a dormência (Malavasi, 1988;Araujo Neto et al.,2002;Zaidan & Barbedo, 2004;Marcos Filho, 2005) possam alterar suas características fotoblásticas (Takaki, 2001). ...

Reference:

Efeito de diferentes condições de luz na germinação de sementes de Anadenanthera colubrina (Vell.) Brenan e Peltophorum dubium (Spreng.) Taub.
Efeito da luz na germinação e no crescimento inicial de Maytenus robusta Reiss. e Hedyosmum brasiliense Mart.

Revista Brasileira de Sementes

·

ISABELA SCHMITT BERKENBROCK