Results 51 to 60 of about 1,485 (174)

Tachinidae (Diptera) as Floral Visitors and Pollinators in Natural and Managed Systems

Entomologia Experimentalis et Applicata, EarlyView.
We review the roles of bristle flies (Tachinidae) as pollinators in natural and managed systems. We find that most tachinid genera visit flowers and that floral‐adapted mouthparts have evolved repeatedly many times in the family. We review patterns of floral specificity and assess the efficacy of tachinids as pollinators with case studies.
John O. Stireman III, Pierfilippo Cerretti   +1 more
wiley   +1 more source

Corona development and floral nectaries of Asclepiadeae (Asclepiadoideae, Apocynaceae) [PDF]

Acta Botanica Brasilica, 2017
ABSTRACT Flowers of Asclepiadoideae are notable for possessing numerous nectaries and elaborate coronas, where nectar can accumulate but is not necessarily produced. Given the complexity and importance of these structures for reproduction, this study aimed to analyze the ontogeny of the corona, the structure and position of nectaries and the ...
Monteiro, Mariana Maciel, Demarco, Diego
openaire   +4 more sources

The structure of nectary of Platanthera bifolia L. Orchidaceae

Acta Societatis Botanicorum Poloniae, 2014
The anatomy and ultrastructure of floral nectary of Platanthera bifolia were studied. The epidermis inside the nectary spur showed characteristic features of secretory tissue. Many cells of this epidermis were protruded forming unicellular hairs.
Małgorzata Stpiczyńska
doaj   +1 more source

Local habitat, not landscape diversity, drives richness and reproduction of cavity‐nesting bees and wasps in agricultural landscapes

Insect Conservation and Diversity, EarlyView.
Local habitat type and hedgerow cover strongly shape bee and wasp richness, but only weakly their reproductive output, outweighing the landscape diversity effects at the 1‐km2 scale. Forests host more wasp but fewer bee species, whereas orchards support high richness of both; bee reproduction patterns are driven by one dominant species, while wasp ...
Sara Tassoni, Marit Kinga Kasten, Thomas Hiller, Michael Staab, Frank M. Schurr, Ingo Grass   +5 more
wiley   +1 more source

Spatiotemporal dynamics of nectar secretion in ‘Tarocco’ blood orange: Coordinated with floral hormones, starch mobilization, and stomatal control

Scientia Horticulturae
‘Tarocco’ blood orange (Citrus sinensis cv. ‘Tarocco’) is a vital spring nectar source, yet the spatiotemporal dynamics of its nectar secretion remain poorly understood.
Cheng Wan, Yan Shen, Lilin Luo, Zhenxing Huang, Yongchao Rao, Man Liu   +5 more
doaj   +1 more source

A Repertoire of Major Genes From Crop Wild Relatives for Breeding Disease‐Resistant Wheat, Rice, Maize, Soybean and Cotton Crops

Plant Breeding, EarlyView.
ABSTRACT Global food demand is predicted to rise anywhere from 59% to 98% by 2050 because of increasing population. However, the continued depletion of natural resources and increasing biotic and abiotic stresses will continue to pose significant threats to global food security in coming years.
Memoona Khalid, Hafiz Mamoon Rehman, Tsz‐Yan Cheung, Shakeel Ahmed, Ting Fung Chan, Hon‐Ming Lam   +5 more
wiley   +1 more source

Identification of differential gene expression in Brassica rapa nectaries through expressed sequence tag analysis. [PDF]

PLoS ONE, 2010
BACKGROUND: Nectaries are the floral organs responsible for the synthesis and secretion of nectar. Despite their central roles in pollination biology, very little is understood about the molecular mechanisms underlying nectar production. This project was
Marshall Hampton, Wayne W Xu, Brian W Kram, Emily M Chambers, Jerad S Ehrnriter, Jonathan H Gralewski, Teresa Joyal, Clay J Carter   +7 more
doaj   +1 more source

Squills vs. Hyacinths – A revised genus delimitation in Hyacinthinae (Hyacintheae, Scilloideae, Asparagaceae) based on phylogenomics

TAXON, Volume 75, Issue 5, October 2026.
Abstract Scilla s.l. (Asparagaceae: Scilloideae) represents a notable Mediterranean geophyte radiation, yet genus delimitation in subtribe Hyacinthinae has long suffered from inconsistent and conflicting generic concepts. A limited set of informative morphological characters and recurrent shifts in circumscription have repeatedly hindered progress ...
Tim Böhnert, Shahin Zarre, Maria‐Anna Vasile, David A. Espinel‐Ortiz, Michael Neumann, Mario Martínez‐Azorín, Maximilian Weigend   +6 more
wiley   +1 more source

Micromorphology And Ultrastructure Of The Floral Nectaries Of Viola Odorata L. (Violaceae)

Modern Phytomorphology, 2015
In Viola odorata two inferior anthers have connective appendages (nectaries) projecting into the corolla spur. Nectaries are approx. 4 mm long, elongate, with the top of the nectary bending to the lateral wall of the spur. In the top part and in the abaxial surface of middle part of the nectary all cells have papillae.
Wiśniewska N., Bohdanowicz J., Kowalkowska A.   +2 more
openaire   +1 more source

Phylogeny and updated infrageneric classification of Asemeia (Polygalaceae)

TAXON, Volume 75, Issue 5, October 2026.
Abstract The family Polygalaceae comprises approximately 1200 species in 30 genera worldwide. Among the four tribes within the family, tribe Polygaleae is characterized by unique flower structures resembling those of Leguminosae‐Papilionoideae. Asemeia is a genus within tribe Polygaleae, consisting of 36 species and 1 variety distributed throughout the
Michelle Mota, Mayara K. Caddah, Félix Forest, Lázsló Csiba, José Floriano B. Pastore   +4 more
wiley   +1 more source