Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 7-Day Trial for You or Your Team.

Learn More →

Incompatibility in bracken

Incompatibility in bracken DAVID WILKIE Department of Genetics, The University, Glasgow * Received 4.viii.55 I. INTRODUCTION IN bracken, mature male and female sexual organs are present so that there is no simultaneously on the same prothallus (fig. i) timing device such as has been found in many other ferns, to prevent seif-fertilisation. Preliminary tests suggested that an incompatibility system was in operation and the following is an account of experiments carried out to establish its existence and to elucidate its mechanism. 2. MATERIAL Three populations of bracken were investigated from the localities of Ballochraggan (population B), Killearn (K) and Milngavie (M) in the south of Scotland. Population M differed morphologically from the other two in that the apices of the pinn branched to give rise to the so-called "crested" form ; also the spores were darker in colour. Spore samples were taken from a single frond in each case and prothalli were cultured in petri-dishes on agar containing standard Knop solution. Cultures were kept reasonably clean by plating spores which had been washed several times by centrifugation. 3. METHODS (I) Preliminary tests Populations B and K were investigated separately in the following way: several dishes were plated with spores drawn from a http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Heredity Springer Journals

Incompatibility in bracken

Wilkie, David
Heredity , Volume 10 (2) – Aug 1, 1956
Download PDF
14 pages

Loading next page...
 
/lp/springer-journals/incompatibility-in-bracken-CduUDywGux

References (13)

Publisher
Springer Journals
Copyright
Copyright © 1956 by The Genetical Society of Great Britain
Subject
Biomedicine; Biomedicine, general; Human Genetics; Evolutionary Biology; Ecology; Cytogenetics; Plant Genetics and Genomics
ISSN
0018-067X
eISSN
1365-2540
DOI
10.1038/hdy.1956.21
Publisher site
See Article on Publisher Site

Abstract

DAVID WILKIE Department of Genetics, The University, Glasgow * Received 4.viii.55 I. INTRODUCTION IN bracken, mature male and female sexual organs are present so that there is no simultaneously on the same prothallus (fig. i) timing device such as has been found in many other ferns, to prevent seif-fertilisation. Preliminary tests suggested that an incompatibility system was in operation and the following is an account of experiments carried out to establish its existence and to elucidate its mechanism. 2. MATERIAL Three populations of bracken were investigated from the localities of Ballochraggan (population B), Killearn (K) and Milngavie (M) in the south of Scotland. Population M differed morphologically from the other two in that the apices of the pinn branched to give rise to the so-called "crested" form ; also the spores were darker in colour. Spore samples were taken from a single frond in each case and prothalli were cultured in petri-dishes on agar containing standard Knop solution. Cultures were kept reasonably clean by plating spores which had been washed several times by centrifugation. 3. METHODS (I) Preliminary tests Populations B and K were investigated separately in the following way: several dishes were plated with spores drawn from a

Journal

Heredity – Springer Journals

Published: Aug 1, 1956

There are no references for this article.