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Journal of Agricultural Science and Technology، جلد ۲۷، شماره ۵، صفحات ۱۱۹۹-۱۲۱۳
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عنوان انگلیسی Screening of Sugar Beet Genotypes to Beet Curly Top Virus and Sugar Beet Cyst Nematode (Heterodera schachtii)
چکیده انگلیسی مقاله The beet cyst nematode (BCN) (Heterodera schachtii) and beet curly top virus-severe (BCTV-Svr) (Curtovirus betae) are two important pathogens worldwide. In present study, the reaction of 14 genotypes to BCN and BCTV-Svr was separately assessed, using Jolgeh and Sanetta cultivars as susceptible and resistant controls, respectively, in completely randomized design experiments. Reactions were based on the cyst and egg counts and symptoms severity index. Experiments were performed in the greenhouse of Tarbiat Modares University, Tehran, Iran, and were repeated twice independently. Based on the results of initial experiments, the S1-960090, S1-940324, S1-960294, and S1-960284 genotypes resistant to the BCN, were selected for further investigation. Furthermore, the reaction of the four selected genotypes to BCN, BCTV-Svr, and the mixture of the two pathogens was evaluated by analyzing their growth, physiological, and biochemical characteristics, and virus accumulation. Resistant genotypes showed higher levels of defense-related enzymes such as catalase, guaiacol peroxidase, and polyphenol oxidase, whereas susceptible genotypes exhibited significant reductions in photosynthesis, greenness, and chlorophyll a, b, and carotenoid content compared to non-inoculated and resistant plants. This is the first study conducted to search for dual-resistance sources against two devastating pathogens that frequently occur in the sugar beet-growing regions of Iran. Based on the results of this research, genotypes S1-960090 and S1-940324 were identified as resistant to both pathogens and are recommended for breeding purposes.
کلیدواژه‌های انگلیسی مقاله Beta vulgaris,Curtovirus,Defense-related enzymes,Dual-resistance sources,Peroxidase,Polyphenol oxidase
نویسندگان مقاله Roya Kazemi |
Department of Plant Pathology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Islamic Republic of Iran.

Mehdi Saadati |
Department of Plant Pathology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Islamic Republic of Iran.

Ali Mokhtasi |
Department of Agronomy, FacDepartment of Agronomy, Faculty of Agriculture, Tarbiat Modares University, P. O. Box: 14115-336, Tehran, Islamic Republic of Iran.ulty of Agriculture, Tarbiat Modares University, PO Box 14115-336, Tehran, Iran

Majid Pedram |
Department of Plant Pathology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Islamic Republic of Iran.

Mohammad Reza Atighi |
Department of Plant Pathology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Islamic Republic of Iran.

Masoud Shams-Bakhsh |
Department of Plant Pathology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Islamic Republic of Iran.

نشانی اینترنتی https://jast.modares.ac.ir/article_24129_314dff6f3fb3d82080a11404032841b7.pdf
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