Multiple allelism in the<i>Vrn-B1</i>locus of common wheat

Ефремова, Т. Т.; Арбузова, В. С.; Леонова, И. Н.; Махмудова, К. Х.

doi:10.1556/crc.39.2011.1.2

Cited by 19 publications

(8 citation statements)

References 18 publications

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“…We have created the near-isogenic lines of the common winter wheat cv. 'Bezostaya 1' with different alleles of the VRN-1 gene and with their help performed an experimental study of the role that VRN-1 allele polymorphism has in the regulation of the duration of the vegetation period and the duration of particular phases of development for the first time (Efremova et al, 2011;Emtseva et al, 2013). We found that the isogenic line with the Vrn-A1а allele has a shorter "tillering -first node" phase in comparison with the lines with the Vrn-B1c and Vrn-B1a alleles.…”

Section: Near-isogenic Linesmentioning

confidence: 99%

Intergenomic substitutions and translocations in wheat-alien lines and their use in studying the characteristics that determine adaptation and stress resistance

2019

Plant Genetic Resources for Breeding and Producing Functional Nutraceutical Food

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The authors have created new genetic models of common wheat with different types of intergenomic chromosome substitution or translocation that include genetic materials of taxonomically unrelated species (S. сereale, Ag. elongatum, Ag. intermedium, H. marinum) for the introgression of genes that control adaptation and resistance to biotic and abiotic stress factors, along with the studying of homology between chromosomes. For the identification of rye, barley and wheatgrass chromosomes in the genome of common wheat, the authors used the molecular-cytological analysis of lines based on the genomic in situ hybridization and PCR analysis with the use of specific primers. The genetic relations have been studied in terms of the degree of substitution and compensation ability of particular chromosomes. To study the homology and homeology of chromosomes and control the peculiar features of alien chromosome transmission and elimination via gametes, the authors performed an analysis on chromosomes' synapsis and assortment in the offspring of wheat-alien substitution lines. Newly created models were examined to identify and localize the genes or gene alleles in chromosomes of different genomes and homeologous groups, which control such traits as the type of development and heading stage, and resistance to the impact of unfavorable weather conditions (winter-cold tolerance, stem and leaf rust and powdery mildew tolerance).

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Section: Near-isogenic Linesmentioning

confidence: 99%

Intergenomic substitutions and translocations in wheat-alien lines and their use in studying the characteristics that determine adaptation and stress resistance

2019

Plant Genetic Resources for Breeding and Producing Functional Nutraceutical Food

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“…The Vrn-A1b allele, on the contrary, increases the duration of the heading period (Koval, Goncharov, 1998;Kamran et al, 2014). Genotypes with the dominant Vrn-B1c allele ripe earlier than genotypes with Vrn-B1a allele (Efremova et al, 2011).…”

Section: Plant Gene Pool and Breedingmentioning

confidence: 99%

“…Isogenic lines created on the basis of winter varieties with known alleles of PPD genes play an important role in the detailed analysis of the VRN genes, which control the duration of the growing period (Stelmakh, Avsenin, 1983;Voronin, Stelmakh, 1985;Koval et al, 2001;Efremova et al, 2011). Study of such lines permits one to single out the effect of alleles of each of the VRN genes or different alleles of the same gene, as well as of their combinations, on the duration of the heading period (Merezhko, 1994;Koval, Goncharov, 1998;Stelmakh et al, 2000;Efremova et al, 2011), the duration of the main stages of organogenesis (Voronin, Stelmakh, 1985;Emtseva et al, 2013), and productivity and fitness (Voronin, 1988). In addition, isogenic lines are suitable models for studying the primary structure and expression of VRN alleles (Loukoianov et al, 2005;Shcherban et al, 2013).…”

Section: Plant Gene Pool and Breedingmentioning

confidence: 99%

“…A series of near-isogenic lines of winter Bezostaya 1 cv. (Bez1) possessing one dominant Ppd-D1a gene (determining weak sensitivity to day length (Worland et al, 1998)), with two different alleles of the VRN-B1 gene (Efremova et al, 2011), as well as on the VRN-A1a and VRN-D4 loci were raised at the Institute of Cytology and Genetics, Novosibirsk. In these lines, different alleles of the dominant VRN-B1 gene (Vrn-B1a and Vrn-B1c) were in the same genetic background, and this fact allowed more accurate identification of differences in the duration of the period from shoots to heading.…”

Section: Plant Gene Pool and Breedingmentioning

confidence: 99%

“…Therefore, the raise of complete sets of all possible genotypes for different alleles of the VRN-1 loci against the same genetic background is necessary for a more comprehensive study of the genetic effects of the VRN loci. The objectives of this work were (1) to obtain lines combining two different VRN-1 loci (Vrn-A1a/Vrn-B1a and Vrn-A1a/ Vrn-B1c) in one genotype on the base of previously obtained isogenic common wheat lines with dominant Vrn-A1a, Vrn-B1a and Vrn-B1c for the winter variety Bez1 (Efremova et al, 2011) and (2) to determine the effect of the combination of alleles on the duration of individual development phases under the conditions of the forest-steppe zone of the Novosibirsk region.…”

Section: Plant Gene Pool and Breedingmentioning

confidence: 99%

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Development and investigation of common wheat lines of winter cultivar Bezostaya 1 with combinations of dominant alleles of VRN-1 loci

et al. 2019

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VRNgenes, determining wheat sensitivity to vernalization, are the main genetic system that defnes the duration of the entire growing period and the durations of the main organogenesis phases. To date, several alleles have been described forVRN-1loci, and allelespecifc primers have been developed that allow rapid identifcation of allelic spectra in common wheat varieties and lines. The unequal inﬂuence of diﬀerent alleles ofVRN-1loci on the duration of the growing period has also been shown; however, there is little information on the eﬀect of the combination of diﬀerent alleles on heading time. In developing genotypes having diﬀerent alleles of dominantVRNgenes on the base of the same genetic background, it is necessary to study the genetic eﬀects ofVRNgenes on the duration of the growing season and the individual developmental phases, as well as on productivity. Most varieties presently grown in Russia carry the dominant alleles of twoVRN-1genes:Vrn-A1aandVrn-B1aorVrn-B1c; thus, the task was to create lines combining the dominant alleles ofVrn-A1awithVrn-B1aandVrn-B1cagainst the genetic background of the winter variety Bezostaya 1 (Bez1Vrn-A1a/Vrn-B1aand Bez1Vrn-A1a/Vrn-B1c). Homozygous plants were isolated in the F2 generation by using known allelespecifc primers for theVrn-A1andVrn-B1loci. The durations of the tillering–frst node period, which is the key stage determining growing duration, and the period from shoots to heading were signifcantly reduced in lines with a combination of two dominant alleles ofVRN-1loci compared to isogenic lines of Bezostaya 1 with the dominant allelesVrn-B1aandVrn-B1c. The duration of these developmental phases also decreased in the obtained lines as compared to the isogenic line containing the dominantVrn-A1aallele, but the diﬀerences were not signifcant. No substantial diﬀerences were found in the duration of other growing phases in lines with two dominant alleles of theVRN-1loci as compared to isogenic lines of Bezostaya 1.

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