Results 31 to 40 of about 4,384 (211)

Functional Ecology of External Secretory Structures in Rivea ornata (Roxb.) Choisy (Convolvulaceae)

open access: yesPlants, 2022
Plants have evolved numerous secretory structures that fulfill diverse roles and shape their interactions with other organisms. Rivea ornata (Roxb.) Choisy (Convolvulaceae) is one species that possesses various external secretory organs hypothesized to ...
Natthaphong Chitchak   +2 more
doaj   +1 more source

Characteristics of the surface of the epidermis in floral nectaries and the receptacle of mountain ash (Sorbus aucuparia L.)

open access: yesActa Agrobotanica, 2012
The structure of receptacular surfaces of floral nectaries at two flowering stages and the structure of the outer surface of the receptacle of Sorbus aucuparia were investigated using scanning electron microscopy.
Agata Konarska
doaj   +1 more source

Morphometric analysis of nectaries and their potential use in the taxonomy of the Jovibarba heuffelii complex (Crassulaceae) [PDF]

open access: yesArchives of Biological Sciences, 2015
The aim of this study was to quantify the morphological variation of nectaries among 14 populations of Jovibarba heuffelii based on multivariate statistics, and to establish whether nectaries possess taxonomic significance for differentiating ...
Nikolić Danijela   +4 more
doaj   +1 more source

Comparison of the nectary structure of chosen species from subf. Pomoideae (Rosaceae)

open access: yesActa Agrobotanica, 2013
The research of the anatomy of nectaries of six species from Pomoideae was carried out. The observations concerned the flowers longitudinal sections of the following species: Malus silvestris Mill., Pyrus communis L., P.
Elżbieta Weryszko-Chmielewska   +1 more
doaj   +1 more source

Structure of nectaries of Malus sylvestris (L.) Mill.

open access: yesActa Agrobotanica, 2012
The structure of floral nectary of Malus sylvestris was examined using light and scanning electron microscopy. Nectaries in M. sylvestris flowers were situated on the adaxial surface of the receptacle, between the style and the base of filaments.
Agata Konarska
doaj   +1 more source

New records of associations between species of Reduviidae (Hemiptera: Heteroptera) and plants in Argentina

open access: yesRevista Chilena de Entomología, 2022
Almost all reduviids are predators; however, recent observations have shown that certain reduviids, particularly members of tribe Harpactorini (Harpactorinae) may be associated with specific plants as a strategy of predation and complementary nectarivory.
Hélcio R. Gil-Santana   +1 more
doaj   +1 more source

EXTRAFLORAL NECTARIES IN THE TROPICAL TREE GUAREA-MACROPHYLLA (MELIACEAE)

open access: yes, 1994
This paper describes the anatomy and morphology of the complex nectary systems of the tropical tree Guarea macrophylla Vahl (Meliaceae) and presents the first record of extrafloral nectaries occurring on reproductive organs (fruits) of a member of the ...
Morellato, LPC, Oliveira, P. S.
core   +3 more sources

Nectar Sugar Modulation and Cell Wall Invertases in the Nectaries of Day- and Night- Flowering Nicotiana

open access: yesFrontiers in Plant Science, 2018
Nectar composition varies between species, depending on flowering time and pollinator type, among others. Various models of the biochemical and molecular mechanisms underlying nectar production and secretion have been proposed.
Kira Tiedge, Gertrud Lohaus
doaj   +1 more source

The pennycress (Thlaspi arvense L.) nectary: structural and transcriptomic characterization

open access: yesBMC Plant Biology, 2017
Background Pennycress [Thlaspi arvense L (Brassicaceae)] is being domesticated as a renewable biodiesel feedstock that also provides crucial ecosystems services, including as a nutritional resource for pollinators.
Jason B. Thomas   +4 more
doaj   +1 more source

A literature review of the pollination strategies and breeding systems in Oncidiinae orchids [PDF]

open access: yesActa Botânica Brasílica, 2019
Oncidiinae is an exclusively Neotropical orchid subtribe with about 1600 described species and an impressive array of vegetative and floral morphological adaptations.
Jonas B. Castro, Rodrigo B. Singer
doaj   +1 more source

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