Morph-specific variation of floral traits associated with reciprocal herkogamy in natural populations of Primula vulgaris and Primula veris

Kálmán, Katalin; Medvegy, A.; Pénzes, Zsolt; Mihalik, Erzsébet

doi:10.1007/s00606-007-0575-5

Cited by 24 publications

(26 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, the stigmaanther separation of P. hastato-sagittatum (L-morph: 1.84 ± 0.115; S-morph: 2.21 ± 0.067) are longer than that of P. jucundum (Lmorph: 1.05 ± 0.130; S-morph: 1.52 ± 0.118) . This is obviously difficult to explain in terms of providing precise pollen transfer by the pollinators, but our study supports the view that the separation of sex organs within flowers not only serves to avoid selfing and inbreeding depression, but also to reduce sexual interference (Barrett, 2002;Kálmán et al, 2007;Parra-Tabla and Bullock, 2005;Webb and Lloyd, 1986). It cannot be excluded that still more heterostylous Polygonum species will become described.…”

Section: Discussionsupporting

confidence: 83%

Floral morphology and breeding system in Polygonum hastato-sagittatum Mak. (Polygonaceae)

Chen¹

2012

Flora - Morphology, Distribution, Functional Ecology of Plants

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 83%

Floral morphology and breeding system in Polygonum hastato-sagittatum Mak. (Polygonaceae)

Chen¹

2012

Flora - Morphology, Distribution, Functional Ecology of Plants

View full text Add to dashboard Cite

“…To describe the extent and specificity of variation in the reciprocal herkogamy expression, stigma height and anther height were recorded according to Fey () and Kálmán et al . (). Intra‐ and interspecific sexual organ reciprocity was calculated using the single‐value reciprocity index (SI) of Sanchez, Ferrero & Navarro ().…”

Section: Methodsmentioning

confidence: 97%

“…As considerable reductions in sexual organ reciprocity between species may lower interspecific pollen flow, with potential effects for reproductive isolation (Keller, de Vos & Conti, 2012), the degree of reciprocity between sexual organs was analysed. To describe the extent and specificity of variation in the reciprocal herkogamy expression, stigma height and anther height were recorded according to Fey (1929) and Kálmán et al (2007). Intra-and interspecific sexual organ reciprocity was calculated using the singlevalue reciprocity index (SI) of Sanchez, Ferrero & Navarro (2008).…”

Section: Morphometric Measurementsmentioning

confidence: 99%

Phylogeography ofPrimula allionii(Primulaceae), a narrow endemic of the Maritime Alps

et al. 2013

View full text Add to dashboard Cite

Primula allionii is endemic to a tiny area of the Maritime Alps and has one of the narrowest distribution ranges in this hotspot of biodiversity. Phylogeographical patterns in P. allionii were studied using plastid DNA markers and dominantly inherited markers (AFLP and ISSR) to verify any admixture between P. allionii and the sympatric P. marginata and to detect the phylogeographical history of the species. Morphometric measurements of flowers and admixture analysis support the hypothesis that hybridization occurs in nature. Species distribution models using two climate models (CCSM and MIROC) suggested a reduction in habitat suitability during cold periods. Phylogeographical analysis suggested an old allopatric divergence during the mid‐Pleistocene transition (about 0.8 Mya) without recolonization/contraction cycles. The Alps watershed does not act as a strong barrier between the two main areas of the distribution range, and moderate gene flow by pollen seems to create the admixture recorded among the stands. According to our results, the persistence of P. allionii throughout the Ice Age appears to be linked to the capacity of the Maritime Alps to provide a wide diversity of microhabitats consistent with the recent biogeographical pattern proposed for the Mediterranean Basin. © 2013 The Linnean Society of London, Botanical Journal of the Linnean Society, 2013, 173, 637–653.

show abstract

“…In C. dodecandra and C. sebestena, the stamens are epipetalous and adnated to the corolla in their lower portion. This implies that stamen length increases as the corolla tube elongates, as occurs in P. vulgaris and P. veris (Kálmán et al, 2007), producing a positive correlation between stamen length, stigma-anther separation and corolla tube length in short-styled morph.…”

Section: Discussionmentioning

confidence: 83%

“…On average, short-styled individuals in both species had fl owers with larger corolla size, longer fl oral tubes and larger calyxes. Increased fl oral size, derived mainly from long corolla tubes, has been associated with the short-styled morph in other distylous species including several Amsinckia species, genus Glandora, and Lithospermum densifl orum (Boraginaceae; Ganders, 1979;Li and Johnston, 2001;Ferrero et al, 2011); Plumbago auriculata (Plumbaginaceae; Ferrero et al, 2009); Primula vulgaris and P. veris (Primulaceae; Kálmán et al, 2007); Gaertnera vaginata, Guettarda scabra, Palicourea demissa, P. padifolia, Psychotria carthagenensis, and P. nuda (Rubiaceae; Richards and Koptur, 1993;Pailler and Thompson, 1997;Hernández and Ornelas, 2003;Cardoso de Castro and Cardoso-Araujo, 2004;Valois-Cuesta et al, 2011;Rodrigues-Faria et al, 2012). In short-styled fl owers, corolla tube length probably plays a more important role in positioning sex organs at an appropriate distance, and thus increasing intermorph pollen transfer accuracy, than in long-styled fl owers (Pailler and Thompson, 1997;Faivre and McDade, 2001;Kálmán et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Distylous traits in Cordia dodecandra and Cordia sebestena (Boraginaceae) from the Yucatan Peninsula

Canché-Collí

Canto

2014

Bot. Sci.

View full text Add to dashboard Cite

Abstract:Distyly is a genetically-controlled polymorphism with two fl oral morphs exhibiting spatial, reciprocal separation between stigmas and anthers; one morph presents styles above anthers, and the other styles below anthers. Distyly is usually linked to a self-incompatibility system that prevents self-pollination and crosses between plants of the same morph, thereby ensuring symmetrical mating and equal morph ratios within populations. This study is the fi rst description of distylous traits in the tropical tree species Cordia dodecandra and C. sebestena from the Yucatan Peninsula. Principal components analysis of fl ower morphological traits identifi ed segregation into two groups with characteristically distylous morphology. Estimation of reciprocal herkogamy using indices showed almost perfect reciprocity in the distance between long and short sexual organs in the two fl ower morphs of both species. Reciprocity between organs was lower in C. dodecandra, suggesting less accuracy in pollen transference between morphs. Self-incompatibility was observed for C. dodecandra, but could not be confi rmed for C. sebestena. However, a 1:1 fl oral morph ratio within the sampled C. sebestena populations suggests the existence of a distylous, self-incompatibility system in this species. Morph distribution in C. dodecandra did not follow a typically distylous distribution, suggesting a disruption in population processes such as seed dispersion and seedling establishment in this species. The reported data confi rm the existence of the distyly syndrome in the two Cordia species. Key words: distyly, morph ratio, reciprocal herkogamy, self-incompatibility.Resumen: La distilia es la separación recíproca entre estigma y anteras, entre plantas de una población, pudiéndose distinguir individuos con fl ores de estilo largo y anteras cortas e individuos con fl ores de estilo corto y anteras largas. Involucrados en este polimorfi smo se encuentran rasgos morfológicos de las fl ores y una auto-incompatibilidad controlada por un sistema de dos alelos que resulta en una proporción de tipos fl orales uno a uno dentro de una población. En este trabajo se explora las características de distilia en dos especies cercanas de árboles tropicales que se distribuyen en la duna costera y en los remanentes de huertos mayas en Yucatán. El análisis de componentes principales mostró la segregación de dos grupos de individuos con diferente morfología fl oral en ambas especies. Los índices de reciprocidad señalaron que la hercogamia entre los órganos largos y cortos se ajusta de forma casi perfecta a lo esperado en un sistema distílico con autoincompatibilidad sexual en Cordia sebestena y C. dodecandra. Sin embargo, en esta última especie se observó una mayor variación en la precisión en la posición de los órganos recíprocos, pudiendo tener consecuencias en la exactitud con la que el polen es depositado sobre el estigma. Las pruebas de incompatibilidad realizadas únicamente en C. dodecandra mostraron que los individuos cuyas fl ores recibieron polen...

show abstract

Morph-specific variation of floral traits associated with reciprocal herkogamy in natural populations of Primula vulgaris and Primula veris

Cited by 24 publications

References 61 publications

Floral morphology and breeding system in Polygonum hastato-sagittatum Mak. (Polygonaceae)

Floral morphology and breeding system in Polygonum hastato-sagittatum Mak. (Polygonaceae)

Phylogeography ofPrimula allionii(Primulaceae), a narrow endemic of the Maritime Alps

Distylous traits in Cordia dodecandra and Cordia sebestena (Boraginaceae) from the Yucatan Peninsula

Contact Info

Product

Resources

About