Reaching to resistant sources by evaluation of germplasm (wild and cultivated) in field and greenhouse condition and world gene bank and foreign sources for rhizomania disease
2003
Darabi, saeed | Aghaeezadeh, Mohsen | Banihashemi, Mahdieh
Bearded root or Rhizomania disease is one of the deleterious diseases of sugar beet in the world. In Iran, the disease has been reported from many of sugar beet cultivation regions and it may act as a restrictive factor in the near future. Using resistant or tolerant varieties is the best way to control the disease. In order to evaluate the germplasm of sugar beet for resistance sources, different varieties (from inside and outside), lines and populations (including cultivars and wild types) have been tested in the infected soil, using randomized complete block design and square lattice design, in the years 2000, 2001 and 2002. Genotypes have been compared based on root yield, sugar content, white sugar yield and other characteristics. Elisa test has also been carried out to confirm the infection and measure the virus concentration. In addition to evaluation of genetic material in field trails, genotypes have been tested in greenhouse condition too. Seeds of some red beet and fodder beet samples along with cultivars have been planted in the infected soil in the greenhouse. Results of field trails and greenhouse evaluation in different years showed that some of the foreign commercial varieties including Dorothea, Rhizofort, Laetitia, Avantage and FD0005 had the best performance in the Rhizomania infected areas and could be used until reaching domesticated resistant variety.
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