A comparative analysis of genetic diversity of North American spring wheat varieties differing in resistance to pre-harvest sprouting was carried out. For identification of sources of resistance the genealogical profiles of 148 red-grained and 63 white-grained North-American spring wheat varieties with full pedigrees were calculated and estimates were made of pre-harvest sprouting. The cluster structure of the populations of red-grained and white-grained varieties was estimated. Analysis of variance revealed significant differences between the average contributions of landraces in the groups of resistant and susceptible varieties. Distribution of the putative sources of resistance in the clusters indicated that varieties having different genetic basis may have different sources of resistance. For red-grained varieties the genetic sources of resistance to pre-harvest sprouting are landraces Crimean, Hard Red Calcutta, and Iumillo, or Button, Kenya 9M-1A-3, and Kenya-U, or Red Egyptian and Kenya BF4-3B-10V1. Tracking of pedigrees showed these landraces contributed to the pedigrees, respectively, via Thatcher, Kenya-Farmer, and Kenya-58, which were likely donors of resistance for red-grained varieties. For white-grained varieties the sources of resistance were landraces Crimean, Hard Red Calcutta, Ostka Galicyjska, Iumillo, Akakomugi, Turco, Hybrid English, Rough Chaff White and Red King, and putative donors of resistance — Thatcher, RL2265, and Frontana. The genealogical profile of accession RL4137, the most important donor of resistance to pre-harvest sprouting in North American spring wheat breeding programmes, contains almost all identified sources of resistance.
Anonymous (2013). Genetic Resources Information System for Wheat and Triticale GRIS. Available at: http://wheatpedigree.net (accessed 12 December 2015).
Chono, M., Matsunaka, H., Seki, M., Fujita, M, Kiribuchi-Otobe, C., Oda, S., Kojima, H., Nakamura N. (2015). Molecular and genealogical analysis of grain dormancy in Japanese wheat varieties, with specific focus on MOTHER OF FTAND TFL1 on chromosome 3A. Breeding Sci., 65 (1), 103–109.
Cox, T. S., Kiang, Y. T., Gorman, M. B., Rodgers, D. M. (1985). Relationship between coefficient of parentage and genetic similarity indices in the soybean. Crop Sci., 25, 529–532.
DePauw, R. M., Clarke, F. R., Fofana, B., Knox, R., Humphreys, G., Cloutier, S. (2009). RL-4137 contributes pre-harvest sprouting resistance to Canadian wheats. Euphytica,168, 347–361.
Dobrotvorskaya, T. V., Martynov, S. P. (2013). Comparative genealogical analysis of resistance to preharvest sprouting of spring wheat varieties from Volga region and North America. Proc. Applied Botany, Genetics and Breeding [Добротворская Т. В., Мартынов С. П. Сравнительный генеалогический анализ сортов яровой пшеницы Поволжья и Северной Америки, различающихся по устойчивости к предуборочному прорастанию. Труды по прикл. ботан., генет. и селекции], 173, 83–90 (in Russian).
Gfeller, F., Svejda, F. (1960). Inheritance of post-harvest seed dormancy and kernel colour in spring wheat lines. Can. J. Plant Sci., 40 (1), 1–6.
Krupnov V. A., Krupnova O. V. (2015). Approaches to improve wheat grain quality: Breeding for falling number. Vavilov J. Genet. Breed., 19 (5), 604–612.
Martynov, S. P. (1998). Analysis of genetic profiles of winter wheats from Russia. Euphytica,52, 305–311.
Martynov, S. P., Dobrotvorskaya, T. V. (2009). Technology of genetic resources analysis of cereal crops on the base of the GRIS4.0 system. In: Genetic Resources of Cultivated Plants in XXI Century [Мартынов С. П., Добротворская Т. В. Технологияанализа генетических ресурсов зерновых культурна основе системы GRIS4.0. Генетические ресурсы культурных растений в XXI веке. ВИР, Санкт-Петербург].. St. Petersburg, pp. 93–105 (in Russian).
Martynov, S. P., Dobrotvorskaya, T. V., Dotlacil, L., Stehno, Z., Faberova, I., Bares, I. (2003). Genealogical approach to the formation of the winter wheat core collection. Russian J. Genetics,39, 917–923.
Merezhko, A. F. (1994). The Problem of Donors in Plant Breeding [Мережко А. Ф. Проблема доноров в селекции растений]. Vavilov Institute of Plant Genetic Resources (VIR), St. Petersburg. 127 pp. (in Russian).
Souza, E., Sorrells, M. E. (1991). Prediction of progeny variation in oat from parental genetic relationships. Theor. Appl. Genet.82, 233–241.