Seed dimorphism and germination behaviour in Salicornia patula

Berger, Ana Paula de Aguiar

doi:10.1007/978-94-009-5524-0_14

Cited by 20 publications

(18 citation statements)

References 6 publications

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“…In S. pusilla the disarticulated fertile segments retain their seeds and may float in sea water for 3 months (Dalby 1963); they are characteristically deposited on high points and the strand line where the seeds germinate in situ . The central seeds of dimorphic S. europaea ( S. patula ) found in Mediterranean environments are dispersed attached to a persistent perianth, which also aids buoyancy (Berger 1985). Such floating seeds have also been noted in Norfolk, UK (Petch & Swann 1968).…”

Section: Floral and Seed Charactersmentioning

confidence: 99%

Salicornia L. (Salicornia pusilla J. Woods, S. ramosissima J. Woods, S. europaea L., S. obscura P.W. Ball & Tutin, S. nitens P.W. Ball & Tutin, S. fragilis P.W. Ball & Tutin and S. dolichostachya Moss)

2001

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Section: Floral and Seed Charactersmentioning

confidence: 99%

Salicornia L. (Salicornia pusilla J. Woods, S. ramosissima J. Woods, S. europaea L., S. obscura P.W. Ball & Tutin, S. nitens P.W. Ball & Tutin, S. fragilis P.W. Ball & Tutin and S. dolichostachya Moss)

2001

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“…doccesar@furg.br segregation (Harper 1977). These variations are frequently accompanied by differences in seed size (Sorenson 1978), colour (Williams & Harper 1965), external structure (Williams & Harper 1965), dispersibility (Sorenson 1978, Payne & Maun 1981, germination requirements (Berger 1985), and growth (Maun & Payne 1989). Somatic dimorphism in C. maritima consists of two morphological distinct types of fruit segments, upper and lower (figure 1).…”

Section: Introductionmentioning

confidence: 99%

Seed characteristics and dispersal of dimorphic fruit segments of Cakile maritima Scopoli (Brassicaceae) population of southern Brazilian coastal dunes

Cordazzo¹

2006

Rev. bras. Bot.

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-(Seed characteristics and dispersal of dimorphic fruits segments of Cakile maritima Scopoli (Brassicaceae) population of southern Brazilian coastal dunes). Cakile maritima occurs sporadically along the southern Brazilian coast, where it is restricted to more protected sites at the base of foredunes. Somatic dimorphism in C. maritima is manifested as morphologically distinct upper and lower fruit segments (silicules). The two morphs were tested for differences in size, number of seeds, dispersal ability and natural establishment. In the C. maritima population of southern Brazil, the lower silicule has more seeds than upper silicule, and lower seeds are more likely to abort than the upper ones. Seeds from upper segments were significantly larger than those from lower ones; however, their mass ranges overlap. The mean silicule mass was not significantly different from both segments, but the silicule/seed mass ratio from upper and lower segments was significantly different. Both segments had high ability to float in sea water, more than 50% were still afloat after 70 days. Nevertheless, dispersal occurs mainly to landward due to dominant wind action. Most of the seedlings were restricted to within a one-metre radius of the mother plant, and were principally derived from lower fruit segments.Key words -Cakile, dimorphic fruits, dispersal, seed production RESUMO -(Características das sementes e dispersão dos segmentos de frutos dimórficos de uma população de Cakile maritima Scopoli (Brassicaceae) nas dunas costeiras do Sul do Brasil). Cakile maritima ocorre esporadicamente ao longo da costa Sul do Brasil, onde é encontrada restrita aos locais mais protegidos na base das dunas frontais. O dimorfismo somático é manifestado como segmentos de frutos (silículas) superior e inferior, morfologicamente distintos. As sementes dos dois tipos de segmentos foram avaliadas quanto ao tamanho, número, capacidade de dispersão e estabelecimento em condições naturais. Na população de C. maritima no Sul do Brasil as silículas inferiores apresentaram maior número de sementes do que as siliculas superiores, e as sementes das silículas inferiores foram mais abortadas que as das superiores. As sementes dos segmentos superiores foram significativamente maiores do que aquelas dos segmentos inferiores; entretanto ocorreu uma sobreposição nos pesos entre elas. O peso médio das silículas dos dois segmentos não difere significativamente, mas a razão peso das silículas / peso das sementes foi significativamente diferente para os segmentos superior e inferior. Ambos segmentos apresentaram grande habilidade de flutuar em água salgada, superior a 50% após 70 dias. Todavia, a dispersão dos segmentos dos frutos ocorre principalmente em direção ao continente através da ação do vento. A maioria das plântulas encontradas no ambiente natural se encontrava restrita num raio de um metro da planta-mãe, e era originada principalmente de sementes dos segmentos inferiores dos frutos.Palavras-chave -Cakile, dimorfismo de frutos, dispersão, produção de s...

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“…The effect of salinity was tested by adding sodium chloride to deionized water. BERGER (1985) stressed, in his study about germination of S. patula, that in the 340 mM NaCl solution central seeds were still able to germinate, while lateral seeds were not. We used the above mentioned 340 mM NaCl solution, though.…”

Section: Germination Testsmentioning

confidence: 99%

Germination characteristics of Salicornia patula Duval-Jouve, S. emerici Duval-Jouve, and S. veneta Pign. et Lausi and their occurrence in Croatia

Šajna¹,

Regvar²,

Kaligarič³

et al. 2013

Acta Botanica Croatica

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-According to recent molecular analyses of Salicornia, we revised the annual glassworts from the Croatian coast, classified until now only as Salicornia europaea. Two species, a diploid Salicornia patula and a tetraploid S. emerici were recognized. They can be easily distinguished by floral characters, but not only by their habitus, which varies extremely according to environmental factors. Both species differ also in seed morphology. Salicornia patula has dimorphic seeds, with larger central seeds reaching high germination rates. Germination patterns helped to explain the habitat preferences. The species rarely co-occur, however. The rare S. patula occupies drier habitats, on coastal mudflats or sands that are irregularly inundated. It occurs within the assoc. Suaedo maritimae-Salicornietum patulae. Salicornia emerici occupies the lowest coastal mudflats, regularly inundated, where nutrient-rich conditions prevail, and forms an almost monotypical assoc. Salicornietum emerici. Due to the synonymy of S. veneta with S. emerici, we exclude the occurrence of S. veneta in Croatia as an independent taxon.

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Seed dimorphism and germination behaviour in Salicornia patula

Cited by 20 publications

References 6 publications

Salicornia L. (Salicornia pusilla J. Woods, S. ramosissima J. Woods, S. europaea L., S. obscura P.W. Ball & Tutin, S. nitens P.W. Ball & Tutin, S. fragilis P.W. Ball & Tutin and S. dolichostachya Moss)

Salicornia L. (Salicornia pusilla J. Woods, S. ramosissima J. Woods, S. europaea L., S. obscura P.W. Ball & Tutin, S. nitens P.W. Ball & Tutin, S. fragilis P.W. Ball & Tutin and S. dolichostachya Moss)

Seed characteristics and dispersal of dimorphic fruit segments of Cakile maritima Scopoli (Brassicaceae) population of southern Brazilian coastal dunes

Germination characteristics of Salicornia patula Duval-Jouve, S. emerici Duval-Jouve, and S. veneta Pign. et Lausi and their occurrence in Croatia

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