Aim and background. In order to identify the dominant homozygous plants resistant to rhizomania within 28 sugar beet genotypes including 5 S1 populations, 16 O-type lines, two pollinators, and 5 hybrids amounting to 1551 field-grown single plants, and a repulsion-phase RAPD marker, (named PN3) were linked to rhizomania resistance.
Materials and methods. DNA was extracted from the leaves of single plants. RAPD-PCR test was carried out on the samples using the primers. According to the data, analysis of variance for the percentage dominant homozygous plants was conducted using unbalanced completely randomized design.
Conclusion. It can be concluded that the PN3 marker could be used for rapid screening of sugar beet germplasm at the stages of resistant plants selection in a resistant cultivar development program.
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