Détail de la notice
Titre du Document
Different trichome types on the leaves of Styrian oil pumpkin
Auteur(s)
KOLB Dagmar ; MüLLER Maria
Résumé
Conventional chemical fixation and histochemical preparation with Schiff reagent were used to investigate the ontogeny of four different types of glandular and non-glandular trichomes of Cucurbita pepo L. subsp. pepo var.styriaca GREB. and their distribution on the leaf surface. The trichomes orginate from single epidermal cells, which first undergo a periclinal division. A continous series of divisions lead to the formation of the different trichomes types. On the leaf surface of Styrian pumpkin, three glandular trichome types, digitform hairs and bristle hairs can be distinguished. All capitate types consist of a basal, a stalk and a head region and these parts differ in the number of cells. The first trichome type, type I, consists of a basal cell, a short stalk and a four-celled head region. Type II, the so called "neck-cell" type is characterised by a long stalk region and a two-celled head region. The third investigated trichome type, type III, the "acuminate-digit", consists of a short stalk and a bicellular head region, which shows only a small constriction and no clear distinction between the head and the stalk area. The fourth described trichome, type IV, the so called "stipitate-capitate", is the biggest one and visible without the microscope. This hair type is characterised by a multicellular base, a uniseriate stalk and a multicellular head region. The above described trichomes and the bristle hairs are fully developed, when the leaf reaches a size of 3mm. Invest
Editeur
Berger
Identifiant
ISSN : 0079-2047
Source
Phyton (Horn) A. 2003, vol. 43, n° 2, pp. 365-379 [15 pages]
Langue
Anglais
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