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

Nectaries of investigated species of Vicia were ranked into 3 morphological types: automorphic (V. sepium L.), transitoric (V. angustifolia L., V. sativa L., V. villosa Roth, V. cracca L.) and flat, epimorphic (V. hirsuta (L.) S. F. Gray and V. tetrasperma (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 V. tetrasperma.

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Floral nectaries and nectar production in brown mustard (Brassica juncea) and white mustard (Sinapis alba) (Brassicaceae)

Plant Systematics and Evolution ◽

10.1007/s00606-002-0273-2 ◽

2003 ◽

Vol 238 (1-4) ◽

pp. 97-107 ◽

Cited By ~ 18

Author(s):

M. L. Masierowska

Keyword(s):

Brassica Juncea ◽

Sinapis Alba ◽

White Mustard ◽

Nectar Production ◽

Floral Nectaries

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

PROTOPLASMA ◽

10.1007/s00709-019-01454-3 ◽

2019 ◽

Vol 257 (2) ◽

pp. 501-523 ◽

Cited By ~ 3

Author(s):

Agata Konarska ◽

Marzena Masierowska

Keyword(s):

Nectar Production ◽

Floral Nectaries

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

Canadian Journal of Botany ◽

10.1139/b86-333 ◽

1986 ◽

Vol 64 (11) ◽

pp. 2508-2516 ◽

Cited By ~ 41

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.

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