Ultrastructure of the principal extrafloral nectaries of Hevea brasiliensis

Samsidar Hamzah, . and Abu Bakar Atim, . Ultrastructure of the principal extrafloral nectaries of Hevea brasiliensis. pp. 172-183. ISSN 0127-7065

The structural changes leading to nectar secretion in the extrafloral nectaries of Hevea were examined by light and electron microscopy. The nectary is served by vascular tissues which arise from the branch supplying to the leaves. Only the phloem traverses up to the sub-secretory cells. Ultrastructural evidence support an energy-requiring eccrine mode of secretion while the pathway taken by the nectar can be both apoplastic and symplastic. Release of nectar is by means of the cuticle which ruptures under pressure. The significance of nectar production to latex flow physiology is also discussed.

Full text available from: Official URL: http://vitaldoc.lgm.gov.my:8060/vital/access/servi...

Abstract

The structural changes leading to nectar secretion in the extrafloral nectaries of Hevea were examined by light and electron microscopy. The nectary is served by vascular tissues which arise from the branch supplying to the leaves. Only the phloem traverses up to the sub-secretory cells. Ultrastructural evidence support an energy-requiring eccrine mode of secretion while the pathway taken by the nectar can be both apoplastic and symplastic. Release of nectar is by means of the cuticle which ruptures under pressure. The significance of nectar production to latex flow physiology is also discussed.

[error in script]

Item Type:	Article
AGROVOC Term:	Hevea brasiliensis
AGROVOC Term:	Leaves
AGROVOC Term:	Nectar
AGROVOC Term:	Nectaries
AGROVOC Term:	Plant secretions
AGROVOC Term:	Ultrastructure
AGROVOC Term:	Plant vascular system
AGROVOC Term:	Electron microscopy
AGROVOC Term:	Light
AGROVOC Term:	Disease prevention
Geographical Term:	Malaysia
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	28 Apr 2025 04:43
URI:	http://webagris.upm.edu.my/id/eprint/23484

Actions (login required)

View Item