Submitted to: International Wheat Scab Symposium Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 11/25/2004
Publication Date: 12/10/2004
Citation: Oliver, R.E., Xu, S.S., Cai, X., Stack, R.W. 2004. Evaluation of tetraploid wheat germplasm for resistance to fusarium head blight. International Wheat Scab Symposium Proceedings.[abstract]. In Canty, S.M., Boring, T., Wardwell, J. and Ward, R.W. (Eds.), Proceedings of the 2nd International Symposium on Fusarium Head Blight; incorporating the 8th European Fusarium Seminar; December 2004, 11-15; Orlando, FL. pp 138.
Technical Abstract: Sources of resistance to Fusarium head blight (FHB) have been identified and utilized in breeding for FHB resistance in common wheat (Triticum aestivum L., 2n = 6x = 42, AABBDD). However, sources of effective FHB resistance are limited in durum wheat (T. turgidum L. ssp. durum, 2n = 4x = 28, AABB). Attempts to transfer resistance from hexaploid wheat to durum wheat have met with minimal success. The objective of this study is to identify novel sources of FHB resistance usable for enhancing resistance of durum wheat to FHB. We systematically evaluated 185 accessions of five subspecies under T. turgidum for resistance to spread of FHB infection (Type II resistance) in one greenhouse season. These subspecies include Persian wheat (T. turgidum L. ssp. carthlicum), cultivated emmer wheat (T. turgidum L. ssp. dicoccum), Polish wheat (T. turgidum L. ssp. polonicum), oriental wheat (T. turgidum L. ssp. turanicum), and poulard wheat (T. turgidum L. ssp. turgidum). Preliminary results from this study indicated that four accessions of cultivated emmer wheat and six accessions of Persian wheat had a similar level of resistance as 'Alsen', a 'Sumai 3' derived hard red spring wheat cultivar in North Dakota. Further evaluations are being conducted to confirm FHB resistance of these cultivated tetraploid wheat accessions in the greenhouse and field. These accessions could serve as novel sources of resistance to develop durum wheat cultivars resistant to FHB.