Results 71 to 80 of about 1,113 (155)

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

open access: yesBotan‪ical 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   +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

open access: yesActa 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   +1 more
doaj   +1 more source

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

open access: yesPsyche: 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   +3 more
doaj   +1 more source

Time of flowering and fertilisation of quince varieties

open access: yesInternational 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   +4 more
doaj   +1 more source

DataSheet_1_Preventing self-fertilization: Insights from Ziziphus species.pdf

open access: yes, 2023
The fitness of self-progeny individuals is inferior to that of their outcrossed counterparts, resulting in a reduction in a plant population’s ability to survive and reproduce.
Noemi Tel-Zur, Noemi Tel-Zur (6931973)
core   +1 more source

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

open access: yesBotan‪ical 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   +4 more
doaj   +1 more source

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

open access: yes
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

Pollination ecology of Rhynchosia cana (Willd.) DC. (Fabaceae), an erect sub-shrub, in peninsular India

open access: yesJournal of Threatened Taxa, 2017
Rhynchosia cana is a perennial erect sub-shrub.  It flowers during November-January with peak flowering in December.  The flowers are hermaphroditic, nectariferous, self-compatible and display explosive pollination mechanism adapted for pollination by ...
A.J. Solomon Raju, K. Venkata Ramana
doaj   +1 more source

Reproductive Systems in Chelone glabra var. glabra [PDF]

open access: yes, 1967
The results of a series of experiments and field observations indicate that bumble bees are the chief pollinators of Chelone glabra L. var. glabra, but that their activity may lead frequently to geitonogamy and less often to xenogamy.
Cooperrider, T. S.
core   +1 more source

Self-Pollinated (Geinotogami) of Uncaria gambir (Hunter) Roxb. Type Udang

open access: yes, 2020
Aims: The research aimed to study the ability of natural and artificial self-pollinated (Geitonogamy) of gambir. Study Design: Experimental method consisted of determining the sample plants.
Zainal, Aprizal   +2 more
core   +1 more source

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