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 Lewellen, R. T. Articles by Whitney, E. D. Search for Related Content PubMed Articles by Lewellen, R. T. Articles by Whitney, E. D. Agricola Articles by Lewellen, R. T. Articles by Whitney, E. D.

Inheritance of Resistance to Race C2 of Cercospora beticola in Sugarbeet¹

Crosses between sugarbeet (Beta vulgaris L.) lines that differed in their reaction to race C2 of Cercospora beticola Sacc. were studied in F₁, F₂, testcross, and F₂ resistant x susceptible populations. Resistance to race C2 was shown to be conditioned by a single dominant gene (Cb = resistant, cbcb = susceptible). The Cb allele had no influence on reaction to race C1. Sugarbeet lines with quantitatively inherited resistance to Cercospora leaf spot but without the Cb allele displayed nearly equal reactions to isolates of both races. The resistant reaction in sugarbeet was manifested either by apparent immunity or by a highly resistant fleck reaction. Of the lines surveyed, the Cb allele was found in lines derived from ‘GW 359’ and in US 201.

Key Words: Beta vulgaris • Cercospora leaf spot • Physiological specialization • Disease resistance

² Research geneticist and plant pathologist, respectively, ARS, USDA, US Agric. Res. Stn., P.O. Box 5098. Salinas, CA 93901.

Received for publication December 13, 1975.