Plant sexual systems, dichogamy, and herkogamy in the Venezuelan Central Plain

Ramírez, Nelson

doi:10.1016/j.flora.2005.01.002

Cited by 18 publications

(29 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some studies suggest that herkogamy exists when any separation degree occurs between stigma and anther (Luo & Widmer 2013). Other studies consider herkogamous only those flowers with at least 3 mm of stigma-anther separation for small flowers and at least 10 mm for large ones (see Ramírez 2005).…”

Section: Herkogamy Absence (Non-herkogamy)mentioning

confidence: 99%

Towards a unified terminology for angiosperm reproductive systems

et al. 2018

View full text Add to dashboard Cite

Angiosperms display an enormous diversity of forms, functions and strategies when it comes to reproduction. This multiplicity has been translated into several terminological concepts and contexts, which have facilitated further research. On the other hand, the use of terms that address the reproduction of flowering plants has been shown to be inconsistent in the literature, complicating communication among specialists. Key terms, such as "reproductive system", "mating system" and "sexual system", among others, have been frequently cited as synonyms, and even used in different circumstances. This review proposes to establish a consistent nomenclatural classification in the field of angiosperms reproductive biology in order to facilitate communication among researchers. Specific terms related to angiosperm reproduction are conceptualized and distributed into five general systems: four related to sexual reproduction (sexual, floral, incompatibility and mating systems); and one related to asexual reproduction (apomictic systems). Our proposal is not to establish a natural classification, but rather to provide a general overview of the main concepts that were grouped here in an artificial and functional manner. Our aim is to advance the field of reproductive biology of angiosperms with consistent and well-defined applications of relevant terminologies.

show abstract

Section: Herkogamy Absence (Non-herkogamy)mentioning

confidence: 99%

Towards a unified terminology for angiosperm reproductive systems

et al. 2018

View full text Add to dashboard Cite

show abstract

“…They include abiotic factors such as precipitation, temperature, number of dry months and photoperiod (Frankie et al, 1974;Leigh and Windsor, 1982;Opler et al, 1976;Prasad and Hegde, 1986;Reich and Borchert, 1984;Van Schaik et al, 1993;Wright and Van Schaik, 1994); seed dispersers and predators (Ashton et al, 1988;Foster, 1982; Gautier-Hion, 1991;Janzen, 1967;Snow, 1965;Wheelwright, 1985); favourable seed germination conditions (Garwood, 1983;Primack, 1987) and phylogenetic relationship hypothesis (Gorchov, 1990;Kochmer and Handel, 1986;Martin-Gajardo and Morellato, 2003;Poulin et al, 1999;Smith-Ramı´rez et al, 1998). At the same instant plant life-history characters or ecological traits have been proposed to affect the fruiting phenology including life form (Marques et al, 2004;Ramı´rez, 2002;Sarmiento and Monasterio, 1983), plant physiognomic groups (Bhat, 1992;Funch et al, 2002;Williams et al, 1999), forest structure (Newstrom et al, 1994;Shukla and Ramakrishnan, 1982), dispersal modes (Griz and Machado, 2001;Smythe, 1970;Snow, 1965) and plant sexual systems (Bawa et al, 1985;Kang and Bawa, 2003;Ramı´rez, 2005). These studies have warranted that the variation in fruiting patterns may be associated with the categories of different ecological traits.…”

Section: Introductionmentioning

confidence: 99%

Fruiting phenology in a tropical dry evergreen forest on the Coromandel coast of India in relation to plant life-forms, physiognomic groups, dispersal modes, and climatic constraints

Selwyn¹,

Parthasarathy²

2007

Flora - Morphology, Distribution, Functional Ecology of Plants

View full text Add to dashboard Cite

“…However, a substantial proportion of species arrange their female and male organs on different flowers and ⁄ or even on different individuals (Yampolsky & Yampolsky, 1922;Barrett, 2002;Charlesworth, 2006). In line with many authors (Ramírez, 2005;Obbard et al, 2006;Zhang et al, 2006;Case et al, 2008;Pannell et al, 2008;Torices & Anderberg, 2009), we refer to these different arrangements of sexual organs on different flowers and ⁄ or individuals as sexual systems. In the so-called monomorphic sexual systems (Bawa & Beach, 1981), species bear bisexual, female and ⁄ or male unisexual flowers on the same individuals, such as in monoecy, gyno-monoecy, andromonoecy and trimonoecy ( Fig.…”

Section: Introductionmentioning

confidence: 70%

Where do monomorphic sexual systems fit in the evolution of dioecy? Insights from the largest family of angiosperms

2011

View full text Add to dashboard Cite

Summary• A range of hypothesized evolutionary pathways has been proposed for describing the evolution of dioecy. However, the evolutionary links between other sexual systems not directly involved in dioecy evolution remain largely unexplored, and hence, a comprehensive picture of evolutionary transitions between sexual systems is still lacking.• Here, we explored the diversity and evolution of sexual systems in Asteraceae, the largest family of flowering plants, where almost all sexual systems are present. We used a phylogenetic approach to build a model of evolutionary transitions between sexual systems.• The best model involved nine transitions, including those from hermaphroditism to andromonoecy, gynomonoecy and gynodioecy, those from gynomonoecy to monoecy and trimonoecy, two transitions to dioecy -one through gynodioecy and the other through monoecy -and reversals from monoecy to gynomonoecy and from gynomonoecy to hermaphroditism.• Our reconstruction of the evolution of sexual systems in Asteraceae provided, for the first time, a joint view of the evolutionary transitions between seven sexual systems, unveiling the evolutionary links between monomorphic sexual systems. A pathway from hermaphroditism to monoecy through gynomonoecy, instead of from andromonoecy, was highly supported, which was consistent with a gradient of floral gender specialization.

show abstract

Plant sexual systems, dichogamy, and herkogamy in the Venezuelan Central Plain

Cited by 18 publications

References 47 publications

Towards a unified terminology for angiosperm reproductive systems

Towards a unified terminology for angiosperm reproductive systems

Fruiting phenology in a tropical dry evergreen forest on the Coromandel coast of India in relation to plant life-forms, physiognomic groups, dispersal modes, and climatic constraints

Where do monomorphic sexual systems fit in the evolution of dioecy? Insights from the largest family of angiosperms

Contact Info

Product

Resources

About