Results 61 to 70 of about 642 (141)

Floral Handedness in Mormodes Orchids: Revisiting Charles Darwin's Observations

Biotropica, Volume 57, Issue 6, November 2025.
In this study, we scrutinized floral enantiostyly in Mormodes orchids, a unique trait within Orchidaceae first observed by Charles Darwin. We hypothesize how intricate column twisting drives strategic pollinarium placement onto opposite sides of the thorax of male euglossine bees, enhancing cross‐pollination.
Arthur Domingos‐Melo, Dhenife Mirelly Silva, Paulo Milet‐Pinheiro   +2 more
wiley   +1 more source

Effect of pollen source on germination of Vanilla planifolia, V. pompona (Orchidaceae), and their interspecific hybrids

Botan‪ical Sciences
Background: Vanilla planifolia and V. pompona exhibit low seed germination rates. Although their fruits are obtained through manual self-pollination, the effect of intra- and interspecific cross-pollination on their fruits and seeds remains unknown ...
José Martín Barreda-Castillo, Emerson Ricardo Pansarin, Juan L. Monribot-Villanueva, Miguel Ángel Lozano-Rodríguez, José A. Guerrero-Analco, Rebeca Alicia Menchaca-García   +5 more
doaj   +1 more source

Ecologia da polinização de Raphiodon echinus (Nees & Mart.) Schauer (Lamiaceae) em Petrolina, PE, Brasil Pollination ecology of Raphiodon echinus (Nees & Mart.) Schauer (Lamiaceae) in Petrolina, Pernambuco State, Brazil

Acta Botânica Brasílica, 2007
Raphiodon echinus é uma espécie de hábito rasteiro, que ocorre espontaneamente em áreas de caatinga. No presente trabalho foram observados a biologia reprodutiva desta espécie com o objetivo de contribuir com informações sobre sua ecologia da polinização.
Carla Tatiana de Vasconcelos Dias, Lúcia Helena Piedade Kiill   +1 more
doaj   +1 more source

Clonal longevity and the enigmatic flowering of woody bamboos are associated with rates of protein evolution

Journal of Integrative Plant Biology, Volume 67, Issue 11, Page 2945-2963, November 2025.
Examining data from 148 Bambusoideae and Pooideae species showed elevated protein evolution rates in highly cloned woody bamboos, providing evidence for an association between protein evolution and life‐history traits in plants with contrasting reproductive modes. ABSTRACT Rates of protein evolution (dN/dS) vary widely across the tree of life.
Xin Wang, Zhi‐Hua Zeng, Peng‐Fei Ma, Yun‐Long Liu, Hua‐Ying Sun, Hong Wang, Hong Ma, De‐Zhu Li, Wei Zhou   +8 more
wiley   +1 more source

Time of flowering and fertilisation of quince varieties

International Journal of Horticultural Science, 1999
Literature dealing with flowering and fertilisation of quince is scarce. Most controversial and scanty are informations on observations of self- and cross-pollination.
T. Szabó, J. Nyéki, M. Soltész, Z. Szabó, T. Tóth   +4 more
doaj   +1 more source

Pump mechanism, secondary pollen presentation, psychophily and anemochory in Emilia sonchifolia (L.) DC. (Asteraceae)

Journal of BioScience and Biotechnology, 2017
Emilia sonchifolia flowers profusely during August-November. The plant produces capitulum inflorescence with only disc florets presenting nectar and pollen as rewards.
Mallikarjuna Rao Medabalimi, Jacob Solomon Raju Aluri, Venkata Ramana Kunuku   +2 more
doaj  

Pollination Requirements and the Foraging Behavior of Potential Pollinators of Cultivated Brazil Nut (Bertholletia excelsa Bonpl.) Trees in Central Amazon Rainforest

Psyche: A Journal of Entomology, 2012
This study was carried out with cultivated Brazil nut trees (Bertholletia excelsa Bonpl., Lecythidaceae) in the Central Amazon rainforest, Brazil, aiming to learn about its pollination requirements, to know the floral visitors of Brazil nut flowers, to ...
M. C. Cavalcante, F. F. Oliveira, M. M. Maués, B. M. Freitas   +3 more
doaj   +1 more source

Allogamy, metaxenia and hybrids in orchids, what do we know about it?

Botan‪ical Sciences
Orchids are a diverse group of plants, also manifested in their great diversity of flowers. Despite this, orchids are pollinated either through autogamy or allogamy (geitonogamy and xenogamy). Although there are some autogamous orchids, the majority are
José Martín Barreda-Castillo, Emerson Ricardo Pansarin, Juan Luis Monribot-Villanueva, José A. Guerrero-Analco, Rebeca Alicia Menchaca-García   +4 more
doaj   +1 more source

Morph bias in inflorescences and individual plants reduces opportunities for geitonogamy in a monomorphic enantiostylous species

Summary Evolution of enantiostyly, a stylar polymorphism characterised by left– or right-handed flowers, is predicted to counter selfing through disassortative pollen movement.
S. B. Rhuthuparna, Vinita Gowda
openaire   +1 more source

SECONDARY POLLEN PRESENTATION, PSYCHOPHILY AND ANEMOCHORY IN Lagascea mollis Cav. (ASTERACEAE)

Biotropia: The Southeast Asian Journal of Tropical Biology, 2017
Information on pollination ecology and seed dispersal aspects is essential to understand sexual reproduction in Lagascea mollis Cav. The study was aimed at providing details of pollen presentation system, pollination syndrome, pollinators and seed ...
M. Mallikarjuna Rao, Aluri Jacob Solomon Raju   +1 more
doaj   +1 more source