Campus Access Only
All rights reserved. This publication is intended for use solely by faculty, students, and staff of University of the Pacific. No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, now known or later developed, including but not limited to photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author or the publisher.
Date of Award
1994
Document Type
Thesis - Pacific Access Restricted
Degree Name
Master of Science (M.S.)
Department
Biological Sciences
First Advisor
Dale McNeal
First Committee Member
Fuad M. Nahhas
Second Committee Member
Alice S. Hunter
Abstract
The epidermis from a range of species from the genus Allium was peeled from the base, middle, and tip of the adaxial and abaxial surfaces of leaf material. Epidermal peels were water mounted after being peeled using forceps, and photographed using Nomarski microscopy.
The epidermis is composed of rows of cells which run parallel to one another, and to the long axis of the leaf. Guard cells are present on both surfaces of the leaf in most species, but some species lack guard cells on either the abaxial or adaxial surface. Guard cells are sunken to varying degrees in all species surveyed. Subsidiary cells are lacking in all species surveyed. End walls of nonstomatal cells are either even or oblique. Micropapilae, striations, or trichomes are present in some species, but most species lack epidermal structures. Epidermal cells range in size from two to three times greater in length than width to greater than fifteen times longer than wide. The majority of parallel walls are either straight or diamond-shaped while others are wrinkled, wavy, or broadened.
Allium is separated into three groups according to the structure of the parallel walls. Group one includes those species with typically straight parallel walls; group two those species with diamond-shaped parallel walls; and group three is comprised of those species with wavy parallel walls.
Pages
129
Recommended Citation
Keller, Daniel L.. (1994). Leaf epidermal morphology : a survey of the genus Allium. University of the Pacific, Thesis - Pacific Access Restricted. https://scholarlycommons.pacific.edu/uop_etds/2271
To access this thesis/dissertation you must have a valid pacific.edu email address and log-in to Scholarly Commons.
Find in PacificSearchRights Statement
In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
