Results 41 to 50 of about 287 (132)

Reproductive ecology of the threatened "star cactus" Astrophytum ornatum (Cactaceae): a strategy of continuous reproduction with low success

open access: yesBotan‪ical Sciences, 2017
Background. There are no previous studies on the reproductive biology of the endemic and endangered cactus species Astrophytum ornatum. Questions. Is flowering continuous or episodic?
Maria Loraine Matias Palafox   +3 more
doaj   +1 more source

Floral morphometric analysis of Prosopis affinis Spreng. (Fabaceae) suggests flexibility of the reproductive system in isolated populations within the Brazilian Pampa

open access: yesAnnals of Forest Research, 2018
Morphological characteristics of inflorescences and flowers of Prosopis affinis growing in the Pampa biome were measured aiming to indirectly infer the species reproductive system.
Camila Carvalho de Gusmão Lôbo   +1 more
doaj   +1 more source

High incidence and correlates of dioecy in the flora of the Canadian Arctic Archipelago

open access: yesArctic Science, 2017
In comparing the incidence of dioecy in North American floras, we report a strong, positive correlation with increasing latitude. Dioecy in the High Arctic is highly correlated with woodiness, as elsewhere.
Peter G. Kevan, Becky Godglick
doaj   +1 more source

Breeding system of the Iberian endemic shrub Colutea hispanica (Leguminosae)

open access: yesAnales del Jardín Botánico de Madrid, 2009
Plant breeding systems have been viewed as mechanisms to promote outcrossing in order to increase genetic variability and prevent inbreeding depression.
Sonia G. Rabasa   +2 more
doaj   +1 more source

Flower scent, pollinators, and effects of proximity between plants on fruit set of the rare, threatened, and endemic Daphne rodriguezii

open access: yesPlant Species Biology, Volume 40, Issue 2, Page 136-147, March 2025.
The study investigated the volatile organic compounds profile of Daphne rodriguezii's floral aroma, a rare and threatened endemic species. Moths were identified as the main pollinators due to their evening and night activity. From a conservationist methodological perspective, plant proximity needs to be considered in this species.
Carles Cardona   +2 more
wiley   +1 more source

Aerial litter mimicry: A novel form of floral deception mediated by a monoterpene synthase

open access: yesJournal of Ecology, Volume 113, Issue 2, Page 302-321, February 2025.
We report the first pollination system in which a flower imitates aerial litter, which refers to the arboreal plant litter in a forest. Our findings demonstrated that Meiogyne heteropetala flower fooled the aerial litter specialist Loberus sharpi by mimicking aerial litter in size, colour and odour.
Ming‐Fai Liu   +6 more
wiley   +1 more source

Honey bee contribution to canola pollination in Southern Brazil Abelhas melíferas na polinização de canola no Sul do Brasil

open access: yesScientia Agricola, 2011
Although canola, (Brassica napus L.), is considered a self-pollinating crop, researchers have indicated that crop productivity increases as a result of honey bee Apis mellifera L. pollination.
Annelise de Souza Rosa   +2 more
doaj   +1 more source

Self-pollination of the orchid Cycnoches haagii from Brazilian Cerrado results in albino phenotype seedlings

open access: yesOrnamental Horticulture, 2021
Cycnoches haagii Barb. Rodr. is an epiphytic orchid very targeted by collectors, but no reference was found in the literature about its reproductive biology.
Vespasiano Borges de Paiva Neto   +5 more
doaj   +1 more source

A new plant genus and species from south‐eastern Spain: Castrila latens (Rubieae, Rubiaceae)

open access: yesTAXON, Volume 73, Issue 4, Page 1001-1015, August 2024.
Abstract A new genus and species, Castrila latens, native to the south‐eastern Iberian Peninsula, is described here for the first time and compared with its closest relatives. The plant is characterized by being annual, glabrous, having reduplicate leaves in whorls of (5)6–7, inflorescences capitate and involucrate, corolla shortly hypocrateriform and ...
Gabriel Blanca   +6 more
wiley   +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

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