نوع مقاله : مقاله کامل پژوهشی
نویسندگان
1 گروه گیاهپزشکی، واحد علوم و تحقیقات، دانشگاه آزادا اسلامی، تهران، ایران
2 موسسه تحقیقات اصلاح و تهیه بذر چغندر، سازمان تحقیقات ، آموزش و ترویج کشاورزی، کرج، ایران
3 گروه گیاهپزشکی ، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Heterodera schachtii, the sugar beet cyst nematode (BCN), is a limiting factor in most of the beet-growing
regions of Iran. Considering this disease's importance and spread, generating resistant cultivars is one of the
most important methods to reduce its damage. Achieving accurate and fast resistance assessment methods
facilitates the development of resistant cultivars. This research aims to compare the response of twenty
domestic and foreign sugar beet genotypes to BCN under greenhouse conditions and with the presence of the
MN3 molecular marker, which is linked to the BCN resistance gene. Analysis of variance showed a significant
difference among genotypes for resistance to BCN in greenhouse conditions. Using the MN3 molecular marker
and greenhouse survey, no susceptible plants were observed in genotype No. F- 21238. Hybrids No. 34781
and 34791 demonstrated the highest resistance (80 and 78% of plants were resistant) under greenhouse
conditions and good resistance (80 and 89% of plants were resistant) to this pathogen evaluating the MN3
marker. The results showed that to save time and more accuracy in selecting resistant genotypes, it is better to
evaluate genotypes with MN3 molecular marker, and then the chosen genotypes are assessed to determine the
level of resistance to this pathogen in greenhouse conditions.
کلیدواژهها [English]