Transmission of the rye 2R chromosome in backcrosses of wheat-rye 2R(2D) substitution lines to common wheat varieties

Krasilova, N. M.; Адонина, И. Г.; Silkova, O. G.; Shumny, V. K.

doi:10.1134/s2079059712010108

Cited by 5 publications

(2 citation statements)

References 27 publications

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“…Studies of the meiotic behaviour of 2D and 2R in dimonosomic lines of wheat showed no pairing between them (Silkova et al 2014). The only T2R.2DL translocations found thus far have resulted from ruptures in the centromeric region, which were followed by centric fusion; thus, these events did not involve small chromosome segments (Krasilova et al 2012).…”

Section: Introductionmentioning

confidence: 92%

The effect of 2D(2R) substitution on the agronomical traits of winter triticale in early generations of two connected crosses

Bazhenov

Divashuk

Kroupin

et al. 2015

Cereal Research Communications

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The association between genomic constitution and agronomic traits was studied in F 2 plants and F 3:4 families of two crosses between a winter hexaploid triticale line with a 2D(2R) chromosome substitution and two hexaploid triticale cultivars carrying the complete rye genome (BBAARR). The analyses revealed that 2D(2R) substitution reduces plant height and spikelet number per spike, increases the 1,000-kernel weight, does not reduce grain shrivelling, and promotes early heading and anthesis. 2D(2R) substitution lines exhibit deeper postharvest seed dormancy, which provides resistance to preharvest sprouting. However, 2D(2R) substitution lines are not recommended for winter hexaploid triticale cultivar development purposes due to their reduced grain productivity.

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Section: Introductionmentioning

confidence: 92%

The effect of 2D(2R) substitution on the agronomical traits of winter triticale in early generations of two connected crosses

Bazhenov

Divashuk

Kroupin

et al. 2015

Cereal Research Communications

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“…To date, the reasons for the elimination of donor chromosomes in backcross hybrids remain unclear; however, it is known that in wheat-rye lines, the frequency of introgression of an alien chromosome depends both on the genotype of the line and on the genotype of the variety used in the crossing (Krasilova et al, 2011). Analysis of introgression lines of hybrid wheat with Aegilops columnaris Zhuk.…”

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confidence: 99%

Molecular-genetic and cytogenetic analyses of cotton chromosome introgression from Gossypium barbadense L. into the genome of G. hirsutum L. in BC2F1 hybrids

Sanamyan,

Bobokhujayev,

Abdukarimov

et al. 2023

Vestn. VOGiS

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Substitution lines of the cotton Gossypium hirsutum L. involving chromosomes of the tetraploid species G. bar ba dense L., G. tomentosum Nutt. ex Seem., and G. mustelinum Miers ex Watt. are a valuable source for breeding, increasing the genetic diversity of G. hirsutum. The substitution of certain G. hirsutum L. chromosomes with G. barbadense chromosomes affect fibre elongation, fibre yield, fibre strength, and micronaire. To increase the efficiency of creating lines, it is necessary to study the nature of the introgression of alien chromosomes into the G. hirsutum L. genome. As a result of molecular genetic analysis of BC2F1 hybrids obtained from crossing monosomic lines of the cotton G. hirsutum from the cytogenetic collection of Uzbekistan with monosomic backcross hybrids BC1F1 G. hirsutum × G. barbadense on the same chromosomes, genetic differences between the hybrids in the profile of chromosome-specific microsatellite SSR markers were found. The predominant introgression of chromosomes 4, 6 and 12 of the At-subgenome and 22 of the Dt-subgenome of G. barbadense was revealed, while chromosomes 2 and 7 of the At-subgenome and 18 of the Dt- subgenome of G. barbadense were characterized by elimination. Among them, chromosomes 7 of the At- sub genome and 18 of the Dt-subgenome of G. barbadense were eliminated in the first backcross generation. In this work, two lines, CS- B06 and CS-B07, from the American cytogenetic collection with a putative substitution involving chromosomes 6 and 7 of the At-subgenome were analysed. The presence of only polymorphic alleles from the species G. hirsutum and the absence of polymorphic alleles from the species G. barbadense were revealed, which showed the absence of substitution involving these chromosomes. BC2F1 hybrids with monosomy for both G. barbadense and G. hirsutum chromosomes were characterized by regular pairing of chromosomes and high meiotic indexes. However, many hybrids were characterized by a decrease in pollen fertility. Two hybrids with monosomy for chromosome 7 of the At-subgenome of G. hirsutum and chromosome 6 of the At-subgenome of G. barbadense had the greatest reduction in pollen viability (70.09 ± 1.57 and 75.00 ± 1.66 %, respectively). Thus, this work shows a specific feature in the introgression of individual chromosomes of the cotton species G. barbadense into the cotton G. hirsutum genome.

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Development and characterization of a novel common wheat–Mexico Rye T1DL·1RS translocation line with stripe rust and powdery mildew resistance

Zhao

et al. 2023

Journal of Integrative Agriculture

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Transmission of the rye 2R chromosome in backcrosses of wheat-rye 2R(2D) substitution lines to common wheat varieties

Cited by 5 publications

References 27 publications

The effect of 2D(2R) substitution on the agronomical traits of winter triticale in early generations of two connected crosses

The effect of 2D(2R) substitution on the agronomical traits of winter triticale in early generations of two connected crosses

Molecular-genetic and cytogenetic analyses of cotton chromosome introgression from <i>Gossypium barbadense</i> L. into the genome of <i>G. hirsutum</i> L. in BC<sub>2</sub>F<sub>1</sub> hybrids

Development and characterization of a novel common wheat–Mexico Rye T1DL·1RS translocation line with stripe rust and powdery mildew resistance

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