Results 71 to 80 of about 2,197 (184)

The comparison of nectaries structure of some varieties of ornamental apple

open access: yesActa Agrobotanica, 2012
The study of floral nectary structures of thirteen ornamental apple cultivars examined using light microscope (MS) and scanning electron microscope (SEM) was performed.
Agata Konarska
doaj   +1 more source

Nectar Analysis Throughout the Genus Nicotiana Suggests Conserved Mechanisms of Nectar Production and Biochemical Action

open access: yesFrontiers in Plant Science, 2018
We have evaluated the floral nectars of nine species from different sections of the genus Nicotiana. These nine species effectively cover the genus. We found that the nectary glands from these different species showed similar developmental regulation ...
Fredy A. Silva   +3 more
doaj   +1 more source

Comparative floral anatomy and evolutionary interpretations of cryptic dioecy in Ocotea velloziana (Lauraceae) [PDF]

open access: yesRodriguésia
Ocotea velloziana (Lauraceae) is a species with cryptic dioecy. The staminate flowers of this species have a pistillode and pistillate flowers have staminodes, which often makes it difficult to describe circumscribe the reproductive system correctly ...
Sarah Juventina Barbosa da Silva   +5 more
doaj   +1 more source

Is Self-Incompatibility Related to Nectar Presence in Dendrobium?

open access: yesPlants
Studies on the gain or loss of nectar during the course of evolution in Dendrobium Sw. (Orchidaceae) are able to provide important information concerning the reproductive biology of this enormous orchid genus and highlight reproductive barriers—in ...
Karolina Zielińska   +4 more
doaj   +1 more source

Occurrence and structure of extrafloral nectariesin Pterodon pubescens Benth. and Pterodon polygalaeflorus Benth.

open access: yesPesquisa Agropecuária Brasileira, 2001
Extrafloral nectaries (EFNs) are structurally variable and widely spread among the angiosperms. The occurrence of EFNs in leaves of Pterodon polygalaeflorus Benth. and Pterodon pubescens Benth. (Fabaceae: Papilionoideae) were detected in adult specimens,
Paiva Élder Antônio Sousa e   +4 more
doaj  

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