Results 61 to 70 of about 5,803 (221)

1166. Helianthus occidentalis Riddell

Curtis's Botanical Magazine, EarlyView.
Summary Helianthus occidentalis Riddell (Compositae: Heliantheae: Helianthinae) is described and illustrated. The species' placement in the genus is commented on, as are the differences in infrageneric placement of the other species Heiser originally grouped H. occidentalis with.
Nicholas Hind, Christabel King
wiley   +1 more source

Micromorphology of Sorbus intermedia Pers. nectary surface in different phases of blooming

Acta Agrobotanica, 2012
The structure of floral nectary surface of Sorbus intermedia in different phases of flower development was examined using scanning electron microscopy. Nectaries in S. intermedia flowers represent a receptacle type.
Elżbieta Weryszko-Chmielewska, Agata Konarska   +1 more
doaj   +1 more source

Metabarcoding of Pollen Carried by Syrphids Reveals Novel Plant–Pollinator Interactions in a Protected Natural Area and Agricultural Sites

Entomologia Experimentalis et Applicata, EarlyView.
Using DNA metabarcoding, this study investigates pollen transported by syrphids (Syrphidae) in the Dolomiti Bellunesi National Park and agricultural sites in Northern Italy. The analysis reveals a high diversity of visited plant taxa, including previously undocumented plant–pollinator interactions.
Serena Magagnoli, Daniele Sommaggio, Claudio Ratti, Riccardo Baroncelli, Andrea Menicucci, Enrico Vettorazzo, Giovanni Burgio   +6 more
wiley   +1 more source

Herbivore defence compounds occur in pollen and reduce bumblebee colony fitness [PDF]

, 2014
Herbivory defence chemicals in plants can affect higher trophic levels such as predators and parasitoids, but the impact on pollinators has been overlooked.
Arias, Luis J. Lomas, Arnold, Sarah E.J., Belmain, Steven R., Idrovo, M. Eduardo Peralta, Stevenson, Philip C.   +4 more
core   +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

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

Acta 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, Agata Konarska   +1 more
doaj   +1 more source

Anatomical Characters Used for Defining Five Species of Nepenthes From Bangka Belitung Islands, Indonesia [PDF]

, 2018
Anatomical structures may vary among the species of Nepenthes. Therefore, the anatomical characters apparently could be used for supporting the morphological characters in identifying species.
Ariyanti, N. S. (Nunik), Rizqiani, S. (Sakina), Sulistijorini, S. (Sulistijorini)   +2 more
core  

Genomic Evidence Supports the Recognition of Gentianella waipara Comb. et Stat. nov. as a Distinct Species from G. calcis (Gentianaceae)

New Zealand Journal of Botany, Volume 64, Issue 2, June 2026.
Gentianella calcis subsp. waipara Glenny & Molloy (Gentianaceae) is endemic to limestone formations in North Canterbury, New Zealand. A previous conservation genetics study of G. calcis Glenny & Molloy and another eastern South Island limestone endemic species, G. astonii (Petrie) T.N.Ho & S.W.Liu, showed that G. calcis subsp.
Robb W. Eastman‐Densem, David S. Glenny, Peter B. Heenan, Pieter B. Pelser   +3 more
wiley   +1 more source

Anatomy and ultrastructure of floral nectaries of Asphodelus aestivus Brot. (Asphodelaceae)

Acta Agrobotanica, 2012
The structure of septal nectaries in Asphodelus aestivus flowers was investigated by using light microscopy (LM), scanning electron microscopy (SEM) and transmission electron microscopy (EM).
Elżbieta Weryszko-Chmielewska, Thomas Sawidis, Krystyna Piotrowska   +2 more
doaj   +1 more source

Secretory tissues of the flower of Sanango racemosum (Gesneriaceae). I. Light microscopy [PDF]

, 1998
Fil: Maldonado, Sara. Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires; ArgentinaFil: Otegui, Marisa Silvina. Instituto de Fisiología Vegetal (INFIVE). Facultad de Ciencias Naturales y Museo.
Maldonado, Sara, Otegui, Marisa Silvina
core