HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Smith, R. L. Search for Related Content PubMed Articles by Smith, R. L. Agricola Articles by Smith, R. L.

Peroxidase Polymorphism in Cultivated Oats, Avena saliva L. and A. byzantina C. Koch¹

Three variant peroxidases in cultivated oats, Avena saliva L. and A. byzantina C. Koch, and their distribution among 29 winter and 33 spring oat cultivars and lines are reported. The winter cultivars were polymorphic in 3 variable isoperoxidases, and 6 enzyme combinations were present. The spring cultivars, with one exception, were not polymorphic for these enzymes and contained only one enzyme combination. It is proposed that the source of the polymorphism originated in A. byzantina, a species that has been used extensively as a source of germ plasm in breeding whiter oats. Two possible reasons for the lack of variation in spring oat isoperoxidases are discussed, namely, the existence of an association of the enzyme pattern found in spring oats with some physiological process having adaptive value to spring cultivars and genetic isolation.

Key Words: Isoperoxidases • Isozyme • Gel Electrophoresis • Adaptive value • Enzyme

² Assistant Professor of Agronomy, Florida Agricultural Experiment Station.

Received for publication October 14, 1969.