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Updated: Sep 20, 2026

Development of Targeting Induced Local Lesions IN Genomes (TILLING) Populations in Small Grain Crops by Ethyl Methanesulfonate Mutagenesis
Published on: July 16, 2019
[Genealogy-based comparative analysis of loose smut resistance of spring common wheat cultivars]
S P Martynov1, T V Dobrotvorskaia
1Vavilov All-Russian Institute of the Plant Industry, Russian Academy of Agricultural Sciences, St. Petersburg, 190000 Russia. sergej_martynov@mail.ru
Abstract:
Comparative genealogical analysis was conducted for loose smut-resistant and susceptible common wheat cultivars of three regions: Russia, Canada, and India. Pedigree analysis of differentiator varieties revealed several sources of the Ut1, Ut3, and Ut4 genes. Tracking resistance transmission in extended pedigrees allowed identification of resistance donors, sources, and, in some cases, putative genes in Russian, Canadian, and Indian cultivars. A contingency table was constructed with the data on resistance or susceptibility of 839 common and durum wheat cultivars and demonstrated a significant association for resistance to two, loose and stinking, types of smut.
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Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
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