FRUIT AND SEED MORPHOLOGY, AND GERMINATION OF Quesnelia quesneliana (BRONGNIART) L.B. SMITH

Matheus Silva Carvalho; Agnaldo Roberto de Jesus Freitas; Daniel Teixeira Pinheiro; Denise Cunha Fernandes Dias

doi:10.1590/1983-21252022v35n103rc

Autores

Matheus Silva Carvalho Departament of Soil and Plant Nutrition, Universidade Federal de Viçosa, Viçosa, MG https://orcid.org/0000-0002-4194-9568
Agnaldo Roberto de Jesus Freitas Departament of Soil and Plant Nutrition, Universidade Federal de Viçosa, Viçosa, MG https://orcid.org/0000-0003-4545-6485
Daniel Teixeira Pinheiro Departament of Agronomy, Universidade Federal de Viçosa, Viçosa, MG https://orcid.org/0000-0002-8060-8790
Denise Cunha Fernandes Dias Departament of Agronomy, Universidade Federal de Viçosa, Viçosa, MG https://orcid.org/0000-0002-0596-2490

DOI:

https://doi.org/10.1590/1983-21252022v35n103rc

Palavras-chave:

Bromélia. Restinga. desenvolvimento pós-seminal.

Resumo

Bromélia Quesnelia quesneliana (Brongniart) L.B. Smith foi relatada na Mata Atlântica, Floresta Úmida, Floresta Estacional Semidecidual Mesofílica, Manguezais e Restingas nos estados do sudeste brasileiro do Rio de Janeiro e Espírito Santo, mas informações sobre a morfologia de frutos e sementes e germinação são limitadas. O objetivo neste estudo foi caracterizar a morfologia externa dos frutos e sementes, germinação e estádios pós-seminais de Q. quesneliana. Os frutos foram coletados na área da Restinga, município de Armação dos Búzios, Rio de Janeiro, Brasil. A largura e o comprimento dos frutos e sementes (morfologia externa) foram medidos e o desenvolvimento pós-seminal das sementes foi analisado, como também elaboradas ilustrações botânicas. Foram calculados os índices t50, uniformidade de germinação, tempo médio de germinação e coeficiente de velocidade de germinação. A germinação foi avaliada por 20 dias por meio da contagem de indivíduos para obtenção dos estágios pós-seminais. Os frutos maduros da Q. quesneliana são piriformes, de cor marrom-avermelhada, manchas claras, com 26 mm de comprimento e 10 mm de largura na porção mais dilatada, contendo em média 148 sementes, envolvidas por mucilagem transparente. As sementes possuem comprimentos de 2 mm e 1 mm de largura, com germinação do tipo epígea e com plântulas do tipo criptocotiledôneas. As sementes dessa espécie germinam rápido e não possuem dormência.

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