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

This Article Figures Only Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Related articles in Crop Science Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via ISI Web of Science (1) Citing Articles via Google Scholar Google Scholar Articles by Lenardon, S. L. Articles by León, A. J. Search for Related Content PubMed Articles by Lenardon, S. L. Articles by León, A. J. Agricola Articles by Lenardon, S. L. Articles by León, A. J. Related Collections Sunflower Plant Disease Plant Genetic Resources

GENOMICS, MOLECULAR GENETICS & BIOTECHNOLOGY

Screening Sunflower for Resistance to Sunflower chlorotic mottle virus and Mapping the Rcmo-1 Resistance Gene

^a IFFIVE-CICVA, INTA. Camino 60 Cuadras Km 5 1/2 X5020ICA, Córdoba, Argentina
^b ADVANTA SEMILLAS SAIC Ruta 226 Km 60,5 (7620) Balcarce, Buenos Aires, Argentina

^* Corresponding author (slenard{at}infovia.com.ar)

Sunflower chlorotic mottling is an emerging virus disease which has been detected in commercial hybrids and wild sunflowers in Argentina. Two hundred thirty-two sunflower (Helianthus annuus L.) lines were screened for resistance to Sunflower chlorotic mottle virus (SuCMoV) using artificial inoculations under greenhouse conditions. Only three lines (L33, L74, and L52) showed a partial resistance, L33 being the most resistant. Virus replication was delayed (A₄₀₅ in DAS-ELISA) and morphological traits (plant height and leaf width) were less affected in this line and its various hybrid combinations than in susceptible controls. Segregation data from an artificially inoculated F₂ population, under greenhouse and field conditions, indicated the presence of a single dominant resistance gene which was designated Rcmo-1. This gene was mapped on Linkage Group 14 between markers MS0022 (5 cM) and ORS-307 (4 cM). Linkage between the two markers and the Rcmo-1 locus was confirmed in a field evaluation.

Abbreviations: CM, chlorotic mottling • DAS-ELISA, double antibody sandwich-enzyme linked inmunosorbent assay • ICP, isolated chlorotic pinpoint • MM, mild mosaic • SCM, severe chlorotic mottling • SCP, scarce chlorotic pinpoint • SuCMoV, Sunflower chlorotic mottle virus

Related articles in Crop Science:

THIS ISSUE IN CROP SCIENCE

Crop Science 2005 45: vi. [Full Text]