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Published online 23 February 2005
Published in Crop Sci 45:735-739 (2005)
© 2005 Crop Science Society of America
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Screening Sunflower for Resistance to Sunflower chlorotic mottle virus and Mapping the Rcmo-1 Resistance Gene

S. L. Lenardona,*, M. E. Bazzalob,1, G. Abrattib, C. J. Cimminob, M. T. Galellab, M. Grondonab, F. Giolittia and A. J. Leónb

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


Figure 1
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  		Fig. 1. SuCMoV accumulation, expressed as A405 values for DAS-ELISA, in L2 (susceptible) and L33 (resistant) sunflower lines.

 

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  		Fig. 2. Percentage of sunflower plants of lines L2, L33, F1 and F2 expressing various SuCMoV symptoms in a greenhouse trial (A); in a field trial (B) and A405 DAS-ELISA values for the greenhouse trial (C). L2 (susceptible line), L33 (resistant line), F1 and F2 derived from these two lines. SuCMoV symptom reactions in sunflower lines R: no visible symptoms; SCP: scarce chlorotic pinpoint; ICP: isolated chlorotic pinpoint; CM: chlorotic mottling; SCM: severe chlorotic mottling.

 

Figure 3
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  		Fig. 3. Genetic map of the Rcmo-1 locus on sunflower linkage group 14 showing localization of the gene and six polymorphic SSR markers. Genetic distances were calculated with Kosambi mapping function and are shown in centimorgans (cM). The MS prefix indicates proprietary microsatelites markers and the ORS corresponds to public ones.

 




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