Results 11 to 20 of about 1,446 (175)

Comparative Nectary Morphology across Cleomaceae (Brassicales)

open access: yesPlants, 2023
Floral nectaries have evolved multiple times and rapidly diversified with the adaptive radiation of animal pollinators. As such, floral nectaries exhibit extraordinary variation in location, size, shape, and secretory mechanism.
Brandi Zenchyzen   +6 more
doaj   +1 more source

STRUCTURE AND HISTOCHEMISTRY OF THE FLORAL NECTARY OF Bauhinia monandra (FABACEAE)

open access: yesActa Biológica Colombiana, 2023
The structure and histochemistry of the floral nectary of Bauhinia monandra Kurz (Fabaceae) were investigated. Besides possessing medicinal properties, this tree is also used in the recovery of degraded areas and urban arborization.
Vinícius Alves Rodrigues   +1 more
doaj   +1 more source

Nectar secretion in a dry habitat: structure of the nectary in two endangered Mexican species of Barkeria (Orchidaceae) [PDF]

open access: yesPeerJ, 2021
Barkeria scandens and B. whartoniana are endangered, endemic taxa from Mexico. They are epiphytes adapted to dry habitats. Since these plants are xerophytic, their flowers were investigated for structural adaptations to nectar secretion.
Małgorzata Stpiczyńska   +2 more
doaj   +2 more sources

Nectary structure of Ornithidium sophronitis Rchb.F. (Orchidaceae: Maxillariinae)

open access: yesActa Agrobotanica, 2012
Most orchids do not produce floral food-rewards. Instead, they attract pollinators by mimicry or deceit. When present, the most common floral food-reward is nectar.
Małgorzata Stpiczyńska   +2 more
doaj   +1 more source

THE FLORAL AND EXTRA‐FLORAL NECTARIES OF PASSIFLORA. I. THE FLORAL NECTARY

open access: yesAmerican Journal of Botany, 1981
Floral nectary development and nectar secretion in three species of Passiflora were investigated with light and electron microscopy. The nectary ring results from the activity of an intercalary meristem. Increased starch deposition in the amyloplasts of the secretory cells parallels maturation of the nectary phloem.
Lenore T. Durkee   +2 more
openaire   +4 more sources

Floral nectary structure, nectar presentation and morpho-anatomical analysis of male‐fertile and male‐sterile anthers in onion (Allium cepa, Amaryllidaceae)

open access: yesBoletín de la Sociedad Argentina de Botánica, 2023
Background and aims: The onion (Allium cepa var. cepa) is an allogamous species in which male-sterile lines have been developed. However, the structure of the flower and floral nectaries have only been briefly described.
Ana Maria Gonzalez   +3 more
doaj   +1 more source

Nectar Secretion, Morphology, Anatomy and Ultrastructure of Floral Nectary in Selected Rubus idaeus L. Varieties

open access: yesAgriculture, 2022
The distinctive features of floral nectaries facilitate identification of ecological and phylogenetic links between related taxa. The structure and functioning of nectaries determine the relationships between plants, pollinators, and the environment. The
Mikołaj Kostryco, Mirosława Chwil
doaj   +1 more source

Nectary structure and its taxonomic significance in the genus Matthiola [PDF]

open access: yesرستنی‌ها, 2022
Nectary morphology of Matthiola species (Brassicaceae) in the Flora Iranica area was examined using a stereomicroscope to evaluate its systematic significance and assess infrageneric relationships.
Amin Zeraatkar   +3 more
doaj   +1 more source

Geraniales flowers revisited: evolutionary trends in floral nectaries [PDF]

open access: yesAnnals of Botany, 2016
The detailed relationships in Geraniales in their current circumscription have only recently been clarified. The disparate floral morphologies and especially the nectaries of the corresponding group have consequently not previously been studied in a phylogenetic context.The present study investigates floral and especially nectary morphology and ...
Julius, Jeiter   +2 more
openaire   +2 more sources

Floral biological investigations of apple cultivars in relation to fire blight

open access: yesInternational Journal of Horticultural Science, 2004
Floral activity was studied in two apple cultivars: an Erwinia-tolerant (Treedorn') and a sensitive one (`Sampion'). Since more types of protogyny occur in apples, the period of stigma activity is different.
Zs. Orosz-Kovács   +5 more
doaj   +1 more source

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