Structure of floral nectaries and female-biased nectar production in protandrous species Geranium macrorrhizum and Geranium phaeum

PROTOPLASMA ◽  
2019 ◽  
Vol 257 (2) ◽  
pp. 501-523 ◽  
Author(s):  
Agata Konarska ◽  
Marzena Masierowska
Keyword(s):  
Nectar Production ◽  
Floral Nectaries

scholarly journals Structure of floral nectaries, nectar production and sugar composition in nectar of 7 species of Vicia L. Fabaceae

2013 ◽  
Vol 52 (1-2) ◽  
pp. 49-57
Author(s):  
Małgorzata Stpiczyńska ◽  
Jacek Pielecki
Keyword(s):  
Sugar Composition ◽  
Nectar Production ◽  
Nectary Structure ◽  
Floral Nectaries

Nectaries of investigated species of <em>Vicia</em> were ranked into 3 morphological types: automorphic (<em>V. sepium</em> L.), transitoric (<em>V. angustifolia</em> L., <em>V. sativa</em> L., <em>V. villosa</em> Roth, <em>V. cracca</em> L.) and flat, epimorphic (<em>V. hirsuta</em> (L.) S. F. Gray and <em>V. tetrasperma</em> (L.) Schreb.). The best nectaring was connected with well defined nectary structure, and moreover quantity of nectar was correlated with nectary size but was not depended on number of secretory stomata. Sucrose dominated in the nectar of 6 species of vetches, the exception was balanced nectar of <em>V. tetrasperma</em>.

Anatomy and vasculature of the floral nectaries of Brassica napus (Brassicaceae)

1986 ◽  
Vol 64 (11) ◽  
pp. 2508-2516 ◽  
Author(s):  
A. R. Davis ◽  
R. L. Peterson ◽  
R. W. Shuel
Keyword(s):  
Brassica Napus ◽  
Structural Features ◽  
Nectar Secretion ◽  
Brassica Napus L ◽  
Nectar Production ◽  
Ultrastructural Evidence ◽  
Floral Nectaries

The floral nectaries of Brassica napus L. (Argentine or Swede rape) consist of two pairs of glands which are supplied by phloem only. The lateral pair has an extensive phloem supply and produces most of the flowers' nectar, whereas the median pair is supplied by limited phloem and produces relatively little nectar. Because both lateral and median nectaries contain cells exhibiting similar structural features, the disparity in phloem supply between them could account for the observed difference in nectar production. Ultrastructural evidence suggests an energy-requiring, eccrine mechanism of nectar secretion in Brassica napus. Both apoplastic and symplastic routes for nectar movement and escape appear feasible. Stomata on the nectary surfaces may serve as exits.

scholarly journals Comparative studies on structure of the floral nectaries and the abundance of nectar production of Prunus laurocerasus L.

PROTOPLASMA ◽  
2019 ◽  
Vol 256 (6) ◽  
pp. 1705-1726 ◽  
Author(s):  
Mirosława Chwil ◽  
Mikołaj Kostryco ◽  
Renata Matraszek-Gawron
Keyword(s):  
Comparative Studies ◽  
Nectar Production ◽  
Floral Nectaries ◽  
Prunus Laurocerasus

STRUCTURE OF FLORAL NECTARIES OF ALFALFA (MEDICAGO SATIVA L.) IN RELATION TO NECTAR PRODUCTION

1980 ◽  
Vol 67 (4) ◽  
pp. 433-439 ◽  
Author(s):  
L. R. Teuber ◽  
M. C. Albertsen ◽  
D. K. Barnes ◽  
G. H. Heichel
Keyword(s):  
Medicago Sativa ◽  
Nectar Production ◽  
Floral Nectaries ◽  
Medicago Sativa L

Influence of Phenotype, Season, and Time‐of‐day on Nectar Production in Cotton 1

Crop Science ◽  
1981 ◽  
Vol 21 (4) ◽  
pp. 507-511 ◽  
Author(s):  
Gordon D. Waller ◽  
F. D. Wilson ◽  
Joseph H. Martin
Keyword(s):  
Time Of Day ◽  
Nectar Production

scholarly journals Anatomy of the floral, bract, and foliar nectaries of Triumfetta semitriloba (Tiliaceae)

2005 ◽  
Vol 83 (3) ◽  
pp. 279-286 ◽  
Author(s):  
Carlos André Espolador Leitão ◽  
Renata Maria Strozi Alves Meira ◽  
Aristéa Alves Azevedo ◽  
João Marcos de Araújo ◽  
Kellen Lagares Ferreira Silva ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Type A ◽  
Structural Features ◽  
Floral Bract ◽  
Secretory Structures ◽  
Floral Nectary ◽  
Foliar Anatomy ◽  
Weedy Species ◽  
Floral Nectaries

Triumfetta semitriloba Jacq. (Tiliaceae) is a tropical weedy species with floral nectaries and glands located at the margins of the leaves. The objectives of this work were to describe the anatomy of these secretory structures and to analyze their exudates. Sucrose, glucose, and fructose were identified in the product released by these secretory structures, characterizing them as nectaries. The nectaries of T. semitriloba are of a specialized type; a secretory epidermis comprised of pluricellular and multiserial nectariferous trichomes covers a nectariferous parenchyma, vascularized by phloem and xylem. A mass of phenolic compounds occurs in the head cells of the nectariferous trichomes of the foliar and bract nectaries; however, it is absent in trichomes of the floral nectary. The leaf and bract nectaries differed from those from flowers in their length and diameter. Structural features of the nectaries of T. semitriloba are typical of other taxa of the Malvales.Key words: foliar anatomy, histochemistry, Malvales, nectaries, Tiliaceae, Triumfetta semitriloba.

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