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Annals of Botany 81: 513-518, 1998
© 1998 Annals of Botany Company

The Structure and Cytochemistry of the Stigma-style Complex ofCorylus avellanaL. ‘Tonda Gentile delle Langhe’ (Corylaceae)

FABRIZIO CIAMPOLINI+, and MAURO CRESTI

Dipartimento di Biologia Ambientale, Università deli Studi di Siena, Via P.A. Mattioli 4, Siena, Italy

October 24, 1997 ; December 16, 1997 .

Structural and cytochemical aspects of the stigma-style complex ofCorylus avellanawere studied. In cross section the stigmatic style consists of papillae, one or two layers of sub-epidermal cells and a central transmitting tissue. The papillae cover the style for about 80% of its length, are unicellular and are coated with a cuticle-pellicle. During development, the cell walls of the papillae increase in thickness and between them, below the cuticle, lipid bodies are observed. The sub-epidermal cells are similar in cell content to the papillae. The central transmitting tissue consists of highly vacuolated cells and the intercellular spaces are filled with a proteic and polysaccharidic substance. Both the transverse and longitudinal walls contain plasmodesmata.Copyright 1998 Annals of Botany Company

cytochemistry, stigma and style, ultrastructure,Corylus avellana


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