Investigation on stability of resistance cultivars to rhizomania in sugar beet
2004
Darabi, S. | Bazrafshan, M. | Khajeh, A.
Rhizomania is most important disease in sugar beet worldwide and attack can lead to serious yield losses. In this research, effect of rhizomania disease was investigated on some quantitative and qualitative characteristics of some commercial and experimental sugar beet cultivars. In 2000, Dorothea and Laetitia cultivars gained the most root yield (RY) and white sugar yield (WSY). In this trail, Beet necrotic yellow vein virus (BNYVV) in tap root of EKO, Declic, A0005, Nathalie, BO*CMS Mashhad, (231*428)*JOT18, 436 and Romea treatments, was detected by enzymelinked immunosorbent assay (ELISA). In 2001, Rhizofort, Dorothea, FD0005 and H9901 cultivars produced the most RY, Gina and H9903 cultivars produced the most sugar content (SC) and Rhizofort and Gina cultivars produced the most white sugar yield (WSY). ELISA test revealed that the presence of the virus FD0007, Otype 428, IRO3,W-114 and as well as some plants of H9901 and Puma Mariba cultivars. In 2002, IRO3 cultivar had the most RY, HI0141 and HI0209 cultivars produced the most SC, and HI0141 cultivar produced the most WSY. In ELISA test the virus was observed in Aura, Ramona, SP433311773, IC, Palma, Brigitta, HI0217, HI0152, HI0023, H2201 cultivars. In 2002, Laetitia cultivar produced the most RY and WSY. In this trail because of severe rhizomania condition, many cultivars were infected to disease and yield of resistant cultivars were very low. In this research, there was a negative correlation between virus content and RY, SC and WSY.
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