Seedling Emergence of an Array of Campomanesia Adamantium (cambess.) O. Berg, Under Different Conditions

27 Mar Seedling Emergence of an Array of Campomanesia Adamantium (cambess.) O. Berg, Under Different Conditions

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Abstract

Os indivíduos de Campomanesia adamantium são arbustos com bagas arredondadas, amareladas quando maduras, com polpa suculenta, adocicada e aromática. Muito apreciadas pela população do centro-oeste brasileiro, além do potencial econômico, as gabirobeiras possuem importante função ecológica e medicinal. Os poucos registros sobre os métodos de propagação de C. adamantium demonstram respostas variadas do processo germinativo, por vezes em condições semelhantes. Objetivou-se com este estudo avaliar a influência de diferentes substratos e métodos de extração da polpa das sementes, sobre a emergência de plântulas de C. adamantium, coletadas de um único indivíduo. O experimento fundamentou-se em quatro métodos de extração da polpa a) controle: sementes semeadas com polpa; b) sementes cuja polpa foi retirada mecanicamente pelo atrito com serragem fina; c) sementes cuja polpa foi retirada com lavagem em água corrente; d) sementes com polpa embebidas por 24 h; e, quatro substratos para o plantio: 1) Vermiculita; 2) Plantmax®; 3) Tri-Mix®; 4) areia média lavada. O substrato areia apresentou o melhor potencial de emergência. Não houve diferença significativa entre os métodos de extração de polpa. A presença da polpa não representou perdas no potencial de emergência, tempo médio ou velocidade média de emergência.

English Abstract

Campomanesia adamantium are shrubs with berries that are yellow when ripe, with sweet, aromatic and juicy pulp. The fruits are very appreciated by the Midwestern Brazilian population because, beyond the economic potential, gabirobeiras have important ecological and medicinal applications. The few reports
concerning methods of C. adamantium propagation demonstrate varied responses of the germination process, and variation sometimes occurs for seeds planted under similar conditions. The objective of this study was to evaluate the inluence of different substrates and seed pulp extraction methods on seedling emergence of C. adamantium. Seeds were collected from a single individual. The experiment tested four methods of seed pulp extraction: a) Control: seeds sown with pulp, b) seeds whose pulp was mechanically removed by friction using ine sawdust, c) seeds whose pulp was removed by washing in running water; d) seeds with pulp soaked for 24h. Four different substrates per pulp extraction type were then used for planting: 1) Vermiculite; 2) Plantmax ®;3) Tri-Mix ®, 4) washed medium-grain sand. Sand was the substrate that produced the best result for seedling emergence, however there were no signiicant differences in seedling emergence between seed processing methods. The presence of seed pulp did not impact percent seedling emergence, nor did it affect average time or speed of seedling emergence.