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Peroxidase Polymorphism in Cultivated Oats, Avena saliva L. and A. byzantina C. Koch 1
Author(s) -
Smith Rex L.
Publication year - 1970
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1970.0011183x001000030019x
Subject(s) - avena , biology , cultivar , peroxidase , saliva , botany , horticulture , enzyme , biochemistry
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.