1246719627

Материал из Антэкология /// Anthecology
Перейти к: навигация, поиск
СТАТЬЯ
Ultrastructure and Function of Floral Nectaries of Chamelaucium uncinatum (Myrtaceae)
Annals of Botany, . V. 78. No. 2. P. 189196 (8).
Nectar is secreted for up to 11d after anthesis in Chamelaucium uncinatum . The volume and sucrose concentration secreted varies between flowers, plants and days. The period of nectar secretion coincides with the period of pollen presentation and stigmatic receptivity suggesting nectar is part of an efficient reproductive strategy in C. uncinatum . The nectary of C. uncinatum consists of the entire upper surface of the ovary and hypanthium. The epidermis of the nectary is covered by a thickened cuticle which is only broken at the sites of the numerous modified stomata which are scattered across its surface. It is suggested that nectar is secreted onto the surface of the ovary via these modified stomata. The presence of extensive and well developed endoplasmic reticulum, mitochondria and Golgi bodies in the nectar secreting cells indicates that a granulocrine mechanism of secretion is occurring in C. uncinatum .
Ultrastructure and Function of Floral Nectaries of Chamelaucium uncinatum (Myrtaceae)
O'Brain S.P., Loveys B.R., Grant W.J.R.
Annals of Botany, 1996. V. 78. No. 2. P. 189–196 (8).
Nectar is secreted for up to 11d after anthesis in Chamelaucium uncinatum . The volume and sucrose concentration secreted varies between flowers, plants and days. The period of nectar secretion coincides with the period of pollen presentation and stigmatic receptivity suggesting nectar is part of an efficient reproductive strategy in C. uncinatum . The nectary of C. uncinatum consists of the entire upper surface of the ovary and hypanthium. The epidermis of the nectary is covered by a thickened cuticle which is only broken at the sites of the numerous modified stomata which are scattered across its surface. It is suggested that nectar is secreted onto the surface of the ovary via these modified stomata. The presence of extensive and well developed endoplasmic reticulum, mitochondria and Golgi bodies in the nectar secreting cells indicates that a granulocrine mechanism of secretion is occurring in C. uncinatum .
AID: 1246719627
DOI: 10.1006/anbo.1996.0112
Больше информации в настольной версии.