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Pesquisa Agropecuária Brasileira
Article . 2005 . Peer-reviewed
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Pesquisa Agropecuária Brasileira
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Secagem e armazenamento de sementes de cambuci

Authors: Maluf, Angela Maria; Pisciottano-Ereio, Waldete Aparecida;

Secagem e armazenamento de sementes de cambuci

Abstract

A longevidade de sementes de cambuci, Campomanesia phaea (Berg.) Landr. (Myrtaceae), espécie em risco de extinção, é fundamental no melhor aproveitamento da produção de mudas. O objetivo deste trabalho foi avaliar os efeitos de temperaturas, substratos, níveis de dessecação e condições de armazenamento na capacidade germinativa de sementes de cambuci. Durante três anos consecutivos, foram realizadas coletas de frutos maduros, em oito matrizes, no Jardim Botânico de São Paulo, para a obtenção das sementes. Os experimentos foram realizados em estufas incubadoras para BOD, em delineamento inteiramente casualizado. Os melhores substratos para a germinação foram a vermiculita e sobre papel, em ambas as temperaturas testadas (25ºC e 30ºC). O armazenamento das sementes, em saco de plástico, em câmara fria (8±2ºC) foi mais eficiente que em condições não controladas de ambiente natural, em saco de papel. Com saco de plástico em câmara fria, após 240 dias, sementes sem dessecação mantiveram a germinação inicial de 100%, ao passo que as dessecadas até próximo a 3% de água apresentaram 83,8% de germinação. Sob condições não controladas de ambiente natural em saco de papel, apresentaram cerca de 48,8% de germinação, aos 180 dias de armazenamento, e perderam a capacidade germinativa aos 240 dias.

Related Organizations
Keywords

substrato, longevity, germination, longevidade, temperatura, germinação, temperature, substrate, Campomanesia phaea

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
23
Top 10%
Top 10%
Average
Green
gold