Head blight of wheat (FHB, scab) caused by Fusarium spp. has been associated with yield and quality losses in many wheat-growing regions. In tetraploid wheat sources of resistance are scarce. In the search for novel sources of resistance, 151 Triticum dicoccoides genotypes, originating from 16 habitats in Israel and one habitat in Turkey together with several control genotypes, were evaluated for reaction to fungal spread (Type II resistance) in replicated greenhouse experiments. Significant genetic diversity was found among the tested genotypes, the broad sense heritability for Type II FHB resistance was 0.71. Most of the tetraploid accessions were highly susceptible, only a few showed moderate resistance. Among the eight T. dicoccoides lines with the lowest relative infection rates, five originated from the Mt. Gerizim population, and three from the Mt. Hermon population. None of the T. dicoccoides lines reached the level of resistance present in the common wheat cultivar Sumai3.
|שפה מקורית||אנגלית אמריקאית|
|מזהי עצם דיגיטלי (DOIs)|
|סטטוס פרסום||פורסם - 2003|
הערה ביבליוגרפיתFunding Information:
We gratefully acknowledge R.W. Stack (North Dakota State University) for supplying four T. dicoccoides lines from the USDA germplasm collection. This work was supported by the Israel Discount Bank Chair of Evolutionary Biology and the Ancell-Teicher Research Foundation for Molecular Genetics and Evolution. The authors wish to thank Mrs. Tamar Krugman, Ms. Suad Khalifa and Mr. Matthias Fidesser for their excellent technical assistance.
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