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POTATO RESISTANCE TO LATE BLIGHT AS RELATED TO THE R1 AND R3 GENES INTROGRESSED FROM S. DEMISSUM AND S. STOLONIFERUMстатья
- Авторы: Khavkin E.E., Sokolova E.A., Beketova M., Pankin A., Kuznetsova M., Kozlovskaya I., Spiglazova S., Statsyuk N., Yashina I.
- Журнал: PPO-SPECIAL REPORT
- Номер: 14
- Год издания: 2010
- Издательство: Applied Plant Research
- Местоположение издательства: Wageningen, The Netherlands
- Первая страница: 231
- Последняя страница: 238
- Аннотация: New races of Phytophthora infestans are known to rapidly defeat potato late blight (LB) resistance introgressed with the germplasm of Solanum demissum, the early source of race-specific resistance genes (R-genes). Nonetheless, the presence of the major demissum gene R1 in potato cultivars was associated with higher field indices of LB resistance (Stewart et al., 2003; Gebhardt et al., 2004; Beketova et al., 2006) suggesting that these demissum R-genes in some way add to plant defense response. We developed and verified SCAR markers recognizing the race-specific genes R1 and R3 of S. demissum and S. stoloniferum and the germplasms of these species. By screening wild Solanum species and potato accessions reportedly free from wild Solanum germplasm (Chilotanum varieties and old cultivars), we established that these markers reliably discerned between germplasms of cultivated Solanum tuberosum ssp. tuberosum and wild sources of LB resistance. Screening 161 potato cultivars demonstrated that the presence of SCAR markers of R1 and R3 genes was significantly related to higher indices of LB resistance. Similar results were obtained when the presence of demissum R-genes was recognized using specific races of Ph. infestans. Such association presumes that both R1 and R3 genes contribute to overall LB resistance of potato cultivars. http://130.226.173.223/euroblight/Workshop/2010Arras/Proceedings/Page231_238_Khavkin_web.pdf
- Добавил в систему: Кузнецова Мария Алексеевна