Results 21 to 30 of about 195 (99)

Aggregate enantiostyly: Floral visitor interactions with a previously unreported form of floral display

Journal of Pollination Ecology, 2018
Floral herkogamy, or the spatial separation of reproductive structures, plays an important role in the evolution of plant mating systems. One form of herkogamy is enantiostyly, or the alternate presentation of stigmas to the left and right of the floral ...
Sarah Kelley Richman, D Lawrence Venable
doaj   +1 more source

Quantitative evaluation of reciprocal herkogamy in the distylous species, Hedyotis caerulea (Rubiaceae)

Plant Systematics and Evolution, 2012
Hedyotis caerulea possesses two distinct floral morphs that are generally found in equal numbers in naturally occurring populations. Flowers either possess a relatively long style and short anthers, called a “pin,” or a short style and long anthers, called a “thrum.” This placement of reproductive organs is considered herkogamous and distylous, as it ...
Dennis A. Sampson, Robert A. Krebs
openaire   +2 more sources

Relationship between herkogamy, incompatibility and reciprocity with pollen–ovule ratios in Melochia (Malvaceae)

Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology, 2016
Heterostyly is a floral polymorphism that increases pollination efficiency by promoting cross-pollination and reducing pollen wastage. Efficiency in pollination has been related to plant investment in gamete production and to the pollen to ovule ratio (P/O), which has been proposed as an indication of the likelihood of enough pollen grains reaching the
M. Faife-Cabrera, V. Ferrero, L. Navarro
openaire   +1 more source

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

Botan‪ical Sciences, 2014
Distyly is a genetically-controlled polymorphism with two floral morphs exhibiting spatial, reciprocal separation between stigmas and anthers; one morph has long styles and short stamens and the other short styles and long stamens.
César Canché-Collí, Azucena Canto
doaj   +1 more source

Is there interspecific fruit set in distylous, synchronopatric species of Erythroxylum P. Browne (Erythroxylaceae)? [PDF]

Brazilian Journal of Biology
Sympatric congeneric species that overlap the flowering period and have morphologically similar flowers tend to be pollinated by the same groups of pollinators, facilitating interspecific pollination and hybridization.
L. L. Barreto, L. D. A. Araujo, T. F. F. de Sá, L. P. Felix, M. F. Fay, C. C. Castro   +5 more
doaj   +1 more source

Biologia reprodutiva de Psychotria poeppigiana Mull. Arg. (Rubiaceae) em mata de galeria Reproductive biology of Psychotria poeppigiana Mull. Arg. (Rubiaceae) in gallery forest

Acta Botânica Brasílica, 2004
Psychotria L. (Rubiaceae) é o gênero com mais espécies heterostílicas dentre as Angiospermas. O objetivo deste trabalho é descrever a biologia floral, fenologia, o sistema reprodutivo e os polinizadores de Psychotria poeppigiana Müll. Arg.
Christiano Peres Coelho, Ana Angélica Almeida Barbosa   +1 more
doaj   +1 more source

Breeding biology and distyly in Palicourea rigida H. B. & K. (Rubiaceae) in the Cerrados of Central Brazil Biologia reprodutiva e distilia em Palicourea rigida H. B. & K. (Rubiaceae) em Cerrados do Brasil Central

Acta Botânica Brasílica, 2010
Distyly is a floral polymorphism more common among the Rubiaceae than in any other angiosperm group. Palicourea rigida is a typically distylous species of the Rubiaceae widely distributed in the Brazilian Cerrados.
Adriana de Oliveira Machado, Ana Palmira Silva, Helder Consolaro, Mariluza A. Granja e Barros, Paulo Eugênio Oliveira   +4 more
doaj   +1 more source

Risk of genetic vulnerability and aspects of the reproductive biology of Psychotria ipecacuanha (Rubiaceae), a threatened medicinal plant species of Brazilian forests

Acta Botânica Brasílica
Psychotria ipecacuanha, commonly known as Ipeca, is a medicinal plant of pharmacological and economic value. The species is distylous; it has populations with two floral morphs, one with long and one with short styles.
Patrícia Campos da Silva, Talita Oliveira Nascimento, Willian Krause, Douglas Siqueira de Almeida Chaves, Celice Alexandre Silva   +4 more
doaj   +1 more source

Sexual organs of Sarcotheca macrophylla Blume (Oxalidaceae), an endemic species of Borneo with two floral types confirmed as heterostyly

Journal of Asia-Pacific Biodiversity
: Sarcotheca macrophylla Blume (Oxalidaceae), an endemic plant species to Borneo, consists of short-styled (S-morph) and long-styled (L-morph) flowers, referred to as heterostyly.
Esthi Liani Agustiani, Ence Darmo Jaya Supena, Yayan Wahyu Candra Kusuma, Inggit Puji Astuti, Triadiati Triadiati   +4 more
doaj   +1 more source

The abundance of pollen coat small signaling proteins shows limited convergence between independent selfing transitions in Arabidopsis and Capsella

New Phytologist, Volume 250, Issue 5, Page 3460-3474, June 2026.
Summary In plants, a key example of convergence is the repeated evolution of floral traits associated with the transition from outcrossing to self‐fertilization, often resulting in the ‘selfing syndrome’ (e.g. reduced flower size and loss of scent). However, potentially overlooked changes concern the pollen coat, which plays a role in different aspects
Ömer İltaş, Luciana Salomon, Martin Kovačik, Martin Čertner, Pavel Talacko, Karel Harant, Said Hafidh, Clément Lafon Placette   +7 more
wiley   +1 more source