Broadening the Genetic Diversity of Bread Wheat Using Alien Germplasm: Emphasis on Disease Resistance

Shumny, V. K.; Khlestkina, Elena K.; Леонова, И. Н.; Салина, Е. А.

doi:10.1007/978-3-319-48838-7_9

Cited by 3 publications

(2 citation statements)

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“…This alien segment comprised a long haplotype block with an average adjacent marker LD of 0.87 and 0.74 for FAM24 and FAM26, respectively. Alien introgressions in hexaploid wheat have been extremely valuable for introducing new alleles for end‐use quality (Vaccino, Banfi, Corbellini, & De Pace, 2010), agronomic traits (Placido et al., 2013), and disease/pest resistance (Gill, Friebe, & White, 2011; Jiang, Friebe, & Gill, 1994; Shumny, Khlestkina, Leonova, & Salina, 2016). The chromosome 2B alien introgression from T. timopheevii includes the stem rust resistance gene Sr36 , which has been widely used in wheat breeding for nearly four decades and confers resistance to the widely virulent African stem rust isolate Ug99 (aka race TTKSK) and some of its variants (Shumny et al., 2016; Singh et al., 2011).…”

Section: Discussionmentioning

confidence: 99%

Genetic architecture of agronomic and quality traits in a nested association mapping population of spring wheat

et al. 2020

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Germplasm collections are rich sources of genetic variation to improve crops for many valuable traits. Nested association mapping (NAM) populations can overcome the limitations of genome-wide association studies (GWAS) in germplasm collections by reducing the effect of population structure. We exploited the genetic diversity of the USDA-ARS wheat (Triticum aestivum L.) core collection by developing the Spring Wheat Multiparent Introgression Population (SWMIP). To develop this population, twenty-five core parents were crossed and backcrossed to the Minnesota spring wheat cultivar RB07. The NAM population and 26 founder parents were genotyped using genotyping-by-sequencing and phenotyped for heading date, height, test weight, and grain protein content. After quality control, 20,312 markers with physical map positions were generated for 2,038 recombinant inbred lines (RILs). The number of RILs in each family varied between 58 and 96. Three GWAS models were utilized for quantitative trait loci (QTL) detection and accounted for known family stratification, genetic kinship, and both covariates. GWAS was performed on the whole population and also by bootstrap sampling of an equal number of RILs from each family. Greater power of QTL detection was achieved by treating families equally through bootstrapping. In total 16, 15, 12, and 13 marker-trait associations (MTAs) were identified for heading date, height, test weight, and grain protein content, respectively. Some of these MTAs were coincident with major genes known to control the traits, but others were novel and contributed by the wheat core parents. The SWMIP will be a valuable source of genetic variation for spring wheat breeding.

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Section: Discussionmentioning

confidence: 99%

Genetic architecture of agronomic and quality traits in a nested association mapping population of spring wheat

et al. 2020

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“…tauschii . It is reasonable to speculate that this expansion of genetic variability may have contributed to the increase in the rate of improvement for different traits, including stress tolerance (Mondal et al, 2016), nutritional quality (Crespo-Hererra et al, 2017), industrial quality (Burnett et al, 1995) and disease resistance (Singh et al, 1998; Shumny et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Assessing Genetic Diversity to Breed Competitive Biofortified Wheat With Enhanced Grain Zn and Fe Concentrations

et al. 2019

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Breeding wheat with enhanced levels of grain zinc (Zn) and iron (Fe) is a cost-effective, sustainable solution to malnutrition problems. Modern wheat varieties have limited variation in grain Zn and Fe, but large-scale screening has identified high levels of Zn and Fe in wild relatives and progenitors of cultivated wheat. The most promising sources of high Zn and Fe are einkorn (Triticum monococcum), wild emmer (T. dicoccoides), diploid progenitors of hexaploid wheat (such as Aegilops tauschii), T. spelta, T. polonicum, and landraces of T. aestivum. This study evaluate the effects of translocations from rye and different Aegilops species in a “Pavon-76” wheat genetic background and utilized in the wheat biofortification breeding program at CIMMYT that uses diverse genetic resources, including landraces, recreated synthetic hexaploids, T. spelta and pre-breeding lines. Four translocations were identified that resulted significantly higher Zn content in “Pavon 76” genetic background than the check varieties, and they had increased levels of grain Fe as well-compared to “Pavon 76.” These lines were also included in the breeding program aimed to develop advanced high Zn breeding lines. Advanced lines derived from diverse crosses were screened under Zn-enriched soil conditions in Mexico during the 2017 and 2018 seasons. The Zn content of the grain was ranging from 35 to 69 mg/kg during 2017 and 38 to 72 mg/kg during 2018. Meanwhile grain Fe ranged from 30 to 43 mg/kg during 2017 and 32 to 52 mg/kg during 2018. A highly significant positive correlation was found between Zn and Fe (r = 0.54; P < 0.001) content of the breeding lines, therefore it was possible to breed for both properties in parallel. Yield testing of the advanced lines showed that 15% (2017) and 24% (2018) of the lines achieved 95–110% yield potential of the commercial checks and also had 12 mg/kg advantage in the Zn content suggesting that greater genetic gains and farmer-preferred wheat varieties were developed and deployed. A decade of research and breeding efforts led to the selection of “best-bet” breeding lines and the release of eight biofortified wheat varieties in target regions of South Asia and in Mexico.

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On the anniversary of honorary president of Vavilov Society of Geneticists and Breeders Vladimir Konstantinovich Shumny

Khlestkina,

Kochetov,

Nizhnikov

et al. 2024

Biotehnologiâ i selekciâ rastenij

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On February 12, 2024, Academician of the Russian Academy of Sciences Vladimir Konstantinovich Shumny turned 90 years old. V.K. Shumny from 1985 to 2007 headed the Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences (ICG SB RAS). For more than 30 years he was the head of the Department of Cytology and Genetics of the Faculty of Natural Sciences of Novosibirsk State University and the chairman of the dissertation council of the Institute of Cytology and Genetics SB RAS. Since 1980, he was a member of the Presidium of the Siberian Branch of the USSR Academy of Sciences / RAS, since 1986 he became deputy chairman, and since 1992 - chairman of the Joint Scientific Council of the SB RAS for biological sciences. Since 2004 V.K. Shumny headed the Vavilov Society of Genetics and Breeders (VOGiS) for 10 years, and since 2014 he has been the honorary president of this society. For more than 20 years V.K. Shumny was the editor-in-chief of the periodical scientific publication “VOGiS Herald” (now the Vavilov Journal of Genetics and Selection). The scientific activity of V.K. Shumny is related to plant genetics. He is the head of one of the largest scientific schools in this field. Under his leadership, 6 doctors and 24 candidates of science defended their dissertations. He has published more than 500 scientific papers and received 12 copyright certificates for plant varieties. V.K. Shumny is co-author and editor of several school textbooks on biology.

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Broadening the Genetic Diversity of Bread Wheat Using Alien Germplasm: Emphasis on Disease Resistance

Cited by 3 publications

References 102 publications

Genetic architecture of agronomic and quality traits in a nested association mapping population of spring wheat

Genetic architecture of agronomic and quality traits in a nested association mapping population of spring wheat

Assessing Genetic Diversity to Breed Competitive Biofortified Wheat With Enhanced Grain Zn and Fe Concentrations

On the anniversary of honorary president of Vavilov Society of Geneticists and Breeders Vladimir Konstantinovich Shumny

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