2004
DOI: 10.1590/s0102-33062004000300001
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Efeito alelopático de folhas de Solanum lycocarpum A. St.-Hil. (Solanaceae) na germinação e crescimento de Sesamum indicum L. (Pedaliaceae) sob diferentes temperaturas

Abstract: Pedaliaceae) sob diferentes temperaturas). Alelopatia pode ser definida como o efeito maléfico ou benéfico que uma planta exerce sobre a outra por meio de compostos químicos liberados no ambiente. Diversas espécies do gênero Solanum apresentam evidências de propriedades alelopáticas. S. lycocarpum A. St.-Hil (lobeira) é espécie de ampla distribuição em ambientes perturbados do Cerrado. No presente trabalho foram investigados efeitos alelopáticos de extratos de folhas de lobeira na germinação e no crescimento d… Show more

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Cited by 37 publications
(36 citation statements)
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“…The effects were dose-dependent and were more pronounced in the roots than in the shoots, a pattern which has been identified in a wide range of studies (Gatti et al 2004, Oliveira et al 2004, Pina et al 2009). In these two species, necrosis was evident in the tips of the roots, especially in treatments of higher concentration, a manifestation which had been previously observed in other studies involving sesame (Pina et al 2009).…”
Section: Resultsmentioning
confidence: 53%
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“…The effects were dose-dependent and were more pronounced in the roots than in the shoots, a pattern which has been identified in a wide range of studies (Gatti et al 2004, Oliveira et al 2004, Pina et al 2009). In these two species, necrosis was evident in the tips of the roots, especially in treatments of higher concentration, a manifestation which had been previously observed in other studies involving sesame (Pina et al 2009).…”
Section: Resultsmentioning
confidence: 53%
“…With the exception of sesame, whose inhibition of shoot growth was quite pronounced, for the other target-species the root growth was more affected by the treatments than was the shoot growth. The greater inhibition of root growth in relation to shoot growth has been observed in various studies (Gatti et al 2004, Oliveira et al 2004, Pina et al 2009, Reigosa et al 2013, and may be the result of more direct contact between the roots and the test-solutions or allelochemicals present in the substrate (Chung et al 2001). Alternatively, this greater effect on the roots could result simply from the fact that the root system is the way by which the majority of the water as well as the organic and inorganic solutes penetrate the plant.…”
Section: Resultsmentioning
confidence: 62%
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“…As raízes, normalmente, são mais sensíveis aos efeitos alelopáticos do que a germinação e o elongamento do hipocótilo (Chon et al 2002;Oliveira et al 2004). O extrato hexânico não afetou as plântulas desta espécie.…”
Section: Resultsunclassified
“…Diversos trabalhos atestam que os efeitos dos aleloquímicos sobre o crescimento inicial refletem em um atrofiamento das partes da plântula (Peres et al 2004, Aires et al 2005, Maraschin-Silva & Áquila 2006. Plântulas de olerícolas inviáveis, como as observadas neste trabalho, também foram detectadas por Oliveira et al (2004).…”
Section: Discussionunclassified