Palinología de los géneros de Cactaceae Maihuenia (Maihuenioideae) y Pereskia (Pereskioideae) de Argentina

Cuadrado, Graciela Ana; Garralla, Silvina Susana

doi:10.30972/bon.1811340

Cited by 7 publications

(7 citation statements)

References 1 publication

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“…Most of these pollen grains were from the Asteraceae, Euphorbiaceae, Fabaceae, Malvaceae, and Solanaceae. Similar results were obtained from research in Argentina (Cuadrado, 1999;Cuadrado and Garralla, 2000), Brazil (Cuadrado, 1996;Gabriel, 2000), Mexico (Jones et al, 1992;1993), and Paraguay (Cuadrado, 1996;Gabriel, 2000). However, there is little information on pollen retention in the insect gut.…”

Section: Introductionsupporting

confidence: 78%

Cotton Pollen Retention in Boll Weevils: A Laboratory Experiment

Jones

Greenberg

2009

Palynology

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Cotton pollen is thought to exist in the gut of boll weevils for at least 24 hours. Because finding whole or broken cotton pollen grains are valuable clues in determining when boll weevils were living in cotton, the retention of cotton pollen in the gut of the weevil was examined. Boll weevils were fed cotton buds, cotton flowers, and water for five days, then they were placed into cleaned cages without any food. However they were allowed to drink water freely. Weevils were examined at 0, 24, 48, 72, 96, and 120 hours after the buds and flowers were removed. One hundred weevils were dissected at each time interval, and each gut was placed onto a glass slide. Light microscopy was used to determine the presence or absence of cotton pollen. More weevils (63%) at 0 hours contained pollen than weevils at any other interval. Whole pollen grains were not found in weevils after 24 hours. The 120 hour interval contained a single weevil with pollen. In the laboratory test, whole cotton pollen grains indicated that feeding on cotton occurred within 24 hours. When only halves and fragments of pollen were found, cotton feeding occurred 48-120 hours earlier. Additionally, when six or more cotton pollen grains were found in a weevil, it had fed on cotton within 24 hours. This information narrows the boll weevil dispersal times and distances from cotton fields and overwintering areas.

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Section: Introductionsupporting

confidence: 78%

Cotton Pollen Retention in Boll Weevils: A Laboratory Experiment

Jones

Greenberg

2009

Palynology

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“…Medidas (em µm) das espécies de Cactaceae epifíticas ocorrentes no Rio Grande do Sul, onde: P = eixo polar, E = eixo equatorial, Ex = exina, Orn = ornamentação, acompanhadas do número de colpos, medidas dos colpos (eixo maior e menor), relação P/E. Em alguns estudos, grãos de pólen 3-colpados e 6-colpados são apresentados com rompimento desta membrana, característica verificada também nas fotomicrografias apresentadas por Cuadrado & Garralla (2009: figs. 1 D-G) e Lattar & Cuadrado (2010: figs.…”

Section: Discussionunclassified

“…Dentre os gêneros analisados não foram observados grãos de pólen com aberturas do tipo porado. Aberturas do tipo 3-colpados e 6-colpados compõem os dois padrões morfológicos aqui estudados e podem ser relacionados aos tipos polínicos descritos por Cuadrado & Garralla (2009). Aberturas do tipo 3-colpados ocorrem em Maihuenia patagonica Britton & Rose e M. poeppigii Speg.…”

Section: Padrões Morfológicosunclassified

“…Os diferentes padrões descritos para espécies argentinas (Cuadrado & Garralla 2009;Lattar & Cuadrado 2010), norte do Chile (Miesen et al 2015), bem como espécies do nordeste (Santos et al 1997;Santos & Pin-Ferreira 2001) e sul do Brasil (Schlindwein 1995) revelam grãos de pólen morfologicamente relacionados aos dois padrões morfológicos aqui descritos, com variações no tamanho dos grãos de pólen, textura da exina, forma e, principalmente, tipo de aberturas (colpados, zonocolpados, porados e pantoporados), confirmando as observações quanto ao heteromorfismo da família descrito por Leuenberger (1976).…”

Section: Espéciesunclassified

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Morfologia polínica de espécies epífitas de Cactaceae Juss. do Rio Grande do Sul, Brasil

2017

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RESUMO -Neste trabalho é apresentado o estudo sobre a morfologia polínica de 11 espécies da família Cactaceae, com hábito epífi to, ocorrentes no Rio Grande do Sul, extremo sul do Brasil, com descrições, medidas, fotomicrografi as, bem como informações ecológicas e biogeográfi cas. Os grãos de pólen possuem tamanhos variáveis (médios, grandes e gigantes), com formas prolato-esferoidais a prolatos; aberturas 3-colpados (Lepismium cruciforme (Vell.) Miq. e Rhipsalis cereuscula Haw.) e 6-colpados (demais espécies); exina tectada, com diminutos grânulos e perfurações; colpos cobertos por fi na membrana granulada em todas as espécies, exceto Epiphyllum phyllanthus (L.) Haw.; ocorre heteromorfi smo nas aberturas de L. houlletianum (Lem.) Barthlott, L. warmingianum (K. Schum.) Barthlott e Rhipsalis campos-portoana Loefgr. Os resultados palinológicos indicam dois padrões morfológicos nos táxons estudados: o primeiro (I) é relacionado aos grãos de pólen com abertura 3-colpadas e o segundo (II) aos de abertura 6-colpados. Palavras-chave: palinologia, tipos polínicos, palinotaxonomiaABSTRACT -Pollen morphology of epiphytic species of the Cactaceae Juss. from Rio Grande do Sul, Brazil. In this paper, we studied the pollen morphology of 11 species of epiphytic Cactaceae family in Rio Grande do Sul, southern Brazil. We provide descriptions, measurements, photomicrographs, as well as information on ecology and biogeography. The pollen grains are variable in size (medium, large and giant) with prolate-spheroidal to prolate forms; 3-colpate aperture (Lepismium cruciforme (Vell.) Miq. and Rhipsalis cereuscula Haw.) and 6-colpate (remaining species); exine with tectum and small granulate texture and perforations; except for Epiphyllum phyllanthus (L.) Haw, colpi are covered by thin granulate membrane; heteromorphism in the apertures of L. houlletianum (Lem.) Barthlott, L. warmingianum (K. Schum.) Barthlott and Rhipsalis campos-portoana Loefgr was observed. Results indicate two morphological patterns in the study taxa: the fi rst (I) is related to pollen grains with 3-colpate aperture and second (II) with 6-colpate aperture.

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“…Pollen morphology of Cactaceae was first studied by Kurtz Jr. (1948;1963) who continued over 110 genera and about 700 species as well as Leuenberger (1976) and some other regional reviews (HEUSSER, 1971;CUADRADO & GARRALLA, 2009;RAMÍREZ, 2012;BAUERMANN et al, 2013;GARRALLA et al, 2013;CANCELLI et al, 2017) among others. The Cactaceae family is taxonomically difficult, presenting problems in the delimitation of genera and species, and the circumscription of many taxa shows inconsistences due to the variation of the morphological characters (JUDD et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Pollen characterization of ornamental species of Mammillaria Haw. (Cactaceae/Cactoideae)

Mouga¹,

Schroeder²,

Vieira³

et al. 2019

ABC

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The pollen morphology of thirteen species of Cactaceae was studied: M. backebergiana F.G. Buchenau, M. decipiens Scheidw, M. elongata DC, M. gracilis Pfeiff., M. hahniana Werderm., M. marksiana Krainz, M. matudae Bravo, M. nejapensis R.T. Craig & E.Y. Dawson, M. nivosa Link ex Pfeiff., M. plumosa F.A.C. Weber, M. prolifera (Mill.) Haw, M. spinosissima var. “A Peak” Lem. and M. voburnensis Scheer. All analysed pollen grains are monads, with radial symmetry, medium size (M. gracilis, M. marksiana, M. prolifera, large), tricolpates (dimorphs in M. plumosa [3-6 colpus] and M. prolifera [3-6 colpus]), with circular-subcircular amb (quadrangular in M. prolifera and M. plumosa with six colpus). The pollen grains presented differences in relation to the shape and exine thickness. The exine was microechinate and microperforated. The pollen morphological data are unpublished and will aid in studies that use pollen samples. These pollen grains indicate ornamental cacti.

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Palinología de los géneros de Cactaceae Maihuenia (Maihuenioideae) y Pereskia (Pereskioideae) de Argentina

Cited by 7 publications

References 1 publication

Cotton Pollen Retention in Boll Weevils: A Laboratory Experiment

Cotton Pollen Retention in Boll Weevils: A Laboratory Experiment

Morfologia polínica de espécies epífitas de Cactaceae Juss. do Rio Grande do Sul, Brasil

Pollen characterization of ornamental species of Mammillaria Haw. (Cactaceae/Cactoideae)

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