Micromorphological Studies on Seeds of Orobanche Species from the Iberian Peninsula and the Balearic Islands, and Their Systematic Significance

Plaza, Laura; Fernández, Inmaculada; Juan, Rocío; Pastor, J.; Pujadas, A.

doi:10.1093/aob/mch124

Cited by 66 publications

(66 citation statements)

References 21 publications

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“…The high production of seeds per capsule was an adaptation of this type of plants aimed at increasing the probability of finding an appropriate habitat as suggested in small seeds of Orobanche species (Plaza et al, 2004). The results obtained confi rm the usefulness of seed characters for the identification of most of the species examined, and highlight separating the Hawaiian Portulaca into two groups, as has been recognized.…”

Section: Seed Morphologysupporting

confidence: 62%

Anatomical and Morphological Features of Seeds in Portulaca

Kim¹

2012

Applied Microscopy

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Section: Seed Morphologysupporting

confidence: 62%

Anatomical and Morphological Features of Seeds in Portulaca

Kim¹

2012

Applied Microscopy

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“…Micromorphology of fruit (Akçın 2007;Guerin 2005;Özcan 2002), especially seed coat (Akbari & Azizian 2006;Fagundez & Izco 2003;Hassan et al 2005;Johnson et al 2004;Khalik & van der Maesen 2002;Moazzeni et al 2002;Moro et al 2001;Plaza et al 2004;Shehata & Loutf 2006;Song et al 2005;Xu 2003;Yıldız 2002) or combination (Juan et al 2000) of those study results assess their phlogenetic and/or systematic positions. Authors who studied micromorphology of seeds of different genera in Ranunculaceae family emphasize the taxonomic value of seed characters (Constantinidis et al 2001;İlarslan et al 1997;Karcz & Tomzcok 1987;Cappelletti & Poldini 1984).…”

Section: Introductionmentioning

confidence: 99%

Seed macro and micro morphology of the selected Nigella (Ranunculaceae) taxa from Turkey and their systematic significance

et al. 2009

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Macro and micromorphological properties of intact and mature seeds of 12 taxa (species and varieties) belonging to Nigella L. (Ranunculaceae) was investigated using light and scanning electron microscopy. Material studied covers 11 species of 15 Turkish Nigella. Studied taxa were divided into two types. Type I has ovate to orbicular seeds that includes four species. Type II has triquedrous seeds and includes seven species. Type II was subdivided into two. Type IIa has triquedrous to subpyramidal seeds (five species) and Type IIb has triquedrous to subglobose seeds (two species). Further segregation was performed micromorphologically and an identification key of studied Nigella taxa was given. Studied Nigella taxa have a diverse macro and micromorphological characters that utilize to separate them from each other to assess the systematics of Nigella.

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“…Tal dormência pode ser quebrada após a imersão das sementes em água quente (Carpanezzi & Fowler 1997), o que, no cerrado, ambiente de ocorrência natural destas espécies, deve ocorrer após a elevação de temperatura ocasionada por queimadas periódicas típicas desta formação vegetacional. Seu rápido estabelecimento em áreas de pastagens pode ser ocasionado pelas queimadas da vegetação para a implantação e limpeza do pasto, e também pelo pequeno tamanho das sementes, que permite uma rápida dispersão (Plaza et al 2004).…”

Section: Discussionunclassified

“…Baseando-se no fato de que a morfologia do envoltório seminal é de grande valor para estudos taxonômicos e evolutivos (Plaza et al 2004, Zeng et al 2004, em especial para a família Leguminosae (Javadi & Yamaguchi 2004), este trabalho se propôs a estudar o valor taxonômico de caracteres provenientes do envoltório seminal de espécies brasileiras de Indigofera, utilizando técnicas de exame de superfície e histológico, a fim de adicionar dados que contribuam com trabalhos taxonômicos e filogenéticos do gênero. Tabela 1 -Amostras obtidas de materiais de herbário e vivo de espécies de Indigofera.…”

Section: Introductionunclassified

Morfo-anatomia do envoltório seminal de espécies brasileiras de Indigofera L. (Leguminosae, Papilionoideae)

Teixeira

Corrêa

2007

Rodriguésia

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RESUMO(Morfo anatomia do envoltório seminal de espécies brasileiras de Indigofera L. (Leguminosae, Papilionoideae)) O grande número de espécies e a complexidade do gênero Indigofera geram controvérsias taxonômicas de difícil resolução. Para contribuir com a taxonomia do gênero, foram levantados caracteres diagnósticos do envoltório seminal de sete espécies brasileiras de Indigofera, utilizando técnicas de exame de superfície e histológicas. As sementes são pequenas, em sua maioria rombóides mas também cúbicas ou cilíndricas, variando de verde-claras a castanho-escuras, exotestais, albuminosas, com hilo mediano, circular a ovado, de coloração conspícua. O envoltório apresentou microescultura micro a macrorreticulada, sendo constituído por macroesclereídes (com conteúdo fenólico em cinco espécies) e osteosclereídes. Embora a anatomia do envoltório da semente não tenha apresentado diferenças marcantes entre as espécies, a combinação de caracteres provenientes da microescultura da superfície seminal, da forma e do tamanho do hilo e da semente, e do número de camadas de osteosclereídes, permitiu a identificação das espécies estudadas neste trabalho. Foi concluído que a anatomia é uma ferramenta bastante útil para subsidiar a taxonomia do gênero. Palavras-chave: Anatomia, microscopia eletrônica de varredura, microescultura, taxonomia, testa, semente. ABSTRACT(Seed-coat morphology and anatomy of Brazilian species of Indigofera L. (Leguminosae, Papilionoideae)) The large number of species and the complexity of the genus Indigofera have lead to difficult delimitation between species. In order to contribute towards the taxonomy of the genus, diagnostic characters of the seed coat of seven Brazilian species of Indigofera with the utilization of surface examination and histological techniques were explored. Seeds are small, mostly rhomboid but sometimes cuboid or cylindrical, light greenish to dark brownish, exo-testal, albuminous, with medium-sized, circular to ovate, conspicuously colored hilum. Seedcoat has micro to macroreticulate microsculpture, phenolic macrosclereids and osteosclereids. Although considerable differences among the seedcoat anatomy within species was not found, it was possible to identify the species with basis on the combination of characters from seed coat microsculpture, both shape and size of the hilum and seeds, as well as the number of layers of osteosclereids. It is concluded that anatomy is a useful tool to set taxonomical patters within Indigofera.

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Micromorphological Studies on Seeds of Orobanche Species from the Iberian Peninsula and the Balearic Islands, and Their Systematic Significance

Abstract: The usefulness of micromorphological studies on seeds of Orobanche in relation to differentiating taxa is demonstrated, and a key is provided to distinguish species or groups of species.

Cited by 66 publications

References 21 publications

Anatomical and Morphological Features of Seeds in Portulaca

Anatomical and Morphological Features of Seeds in Portulaca

Seed macro and micro morphology of the selected Nigella (Ranunculaceae) taxa from Turkey and their systematic significance

Morfo-anatomia do envoltório seminal de espécies brasileiras de Indigofera L. (Leguminosae, Papilionoideae)

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