Results 11 to 20 of about 1,448 (177)
Floral nectary and osmophore of Epipactis helleborine (L.) Crantz (Orchidaceae). [PDF]
Protoplasma, 2018 The analysis of flowers collected at different stages of anthesis provides strong evidence to conclude that the shell-shaped hypochile and the knobs of epichile form a nectary. The scent comes from the aromatic constituents of nectar and the epichile tissue and the apices of all tepals (osmophores).
Kowalkowska AK +3 more
europepmc +4 more sources
Nectar biosynthesis is conserved among floral and extrafloral nectaries [PDF]
Plant Physiology, 2021 AbstractNectar is a primary reward mediating plant–animal mutualisms to improve plant fitness and reproductive success. Four distinct trichomatic nectaries develop in cotton (Gossypium hirsutum), one floral and three extrafloral, and the nectars they secrete serve different purposes.
Elizabeth C Chatt +8 more
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Nectar secretion in a dry habitat: structure of the nectary in two endangered Mexican species of Barkeria (Orchidaceae) [PDF]
PeerJ, 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
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Nectary structure of Ornithidium sophronitis Rchb.F. (Orchidaceae: Maxillariinae)
Acta 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
Boletín 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
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THE FLORAL AND EXTRA‐FLORAL NECTARIES OF PASSIFLORA. I. THE FLORAL NECTARY
American 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
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Agriculture, 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
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Geraniales flowers revisited: evolutionary trends in floral nectaries [PDF]
Annals 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
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Floral biological investigations of apple cultivars in relation to fire blight
International 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
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Nectar defense and hydrogen peroxide in floral nectar of Cucurbita pepo
Acta Agrobotanica, 2015 This study was carried out to investigate some similarities between the nectaries of Nicotiana sp. and Cucurbita pepo, such as starch accumulation in the nectary parenchyma, changes in nectary color during maturation, and the production of a large ...
Daniele Nocentini +2 more
doaj +1 more source