Permanent genetic variability in the introgressive lines and amphidiploids of Triticeae

Аntonyuk, Maksym; Shpylchyn, Vitalii; Ternovska, Tamara

doi:10.3103/s0095452713040026

Cited by 6 publications

(2 citation statements)

References 20 publications

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“…Genetic instability of lines against the background of their cytological stability also seems probable, which may be due to suppression of foreign genes (Boyd et al, 2001), their interaction with each other (Galaev, 2016) or with the genetic environment (Cardozo Téllez et al, 2019), placement near heterochromatin segments of chromosomes, spontaneous mutations during gametogenesis. (Kozub et al, 2019), intrachromosomal rearrangements , transposon movement or epigenetic variability Shpylchyn et al, 2013). Another reason may be clogging of the material during sowing or threshing.…”

Section: Resultsmentioning

confidence: 99%

Selection Evaluation of Introgressive Lines of Soft Winter Wheat With Signs of Resistance to Phytopathogens

Motsniy¹,

Molodchenkova²,

Smertenko³

et al. 2021

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Resistance to common diseases has been studied and a selection assessment has been made of improved introgressive lines created by repeated crossing of amphiploids, primitive lines or collection specimens with modern varieties of soft winter wheat. There is a low frequency of combining group stability with high yield and grain quality. It was found that the genetic environment of some introgressive lines is favorable for the positive effect of rye translocation 1BL.1RS on both economically valuable and adaptive traits in the south of Ukraine and the possibility of combining with other resistance genes. There was no correlation of resistance to powdery mildew, leaf and stem rust with yield both in the absence and presence of natural infectious background and a weak positive relationship (Rsp = 0.26 **) yield with resistance to Septoria and yellow rust in only one variant of the experiment. In most cases, there is a weak significant positive correlation between resistance with protein content and weight of 1000 grains, as well as between the resistance of the lines to various diseases, which is obviously a consequence of artificial selection for group resistance. Selected selection lines (E2792_14, AIL1161_16, E218_09, E212_09, AIL1073_16) with foreign polygenic complexes of resistance to rust diseases, high values of weight of 1000 grains, protein content, as well as morphological features; which are characterized by high productivity, adaptability, tolerance to low agrophones, baking quality. The lines are devoid of many negative qualities inherent in wild species, can be a promising source of resistance to these diseases and are of interest for further breeding work in southern Ukraine, provided the preservation of foreign gene complexes.

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Section: Resultsmentioning

confidence: 99%

Selection Evaluation of Introgressive Lines of Soft Winter Wheat With Signs of Resistance to Phytopathogens

Motsniy¹,

Molodchenkova²,

Smertenko³

et al. 2021

PLANT ARCHIVES

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“…umbellulata, and T. aestivum / Amblyopyrum muticum were developed from crossing the genome-substitution amphidiploids Aurosis, Aurolata and Aurotica as a male parent with the winter cultivar of T. aestivum Aurora as a female parent (Zhirov and Ternovskaya 1984;Antonyuk and Ternovska, 2001;Antonyuk et al 2009). Some of the lines have dark glumes, which is more intense than glume color of their parents, T. aestivum Aurora, and the genome-substitution amphidiploids Aurosis (AABBS sh S sh ), Aurolata (AABBUU), and Aurotica (AABBTT) (Zhirov and Ternovskaya 1984;Antonyuk et al 2013). As no data about biochemistry and molecular biology of glume pigmentation in Triticinae is available , we aimed to find out the nature of pigments that provide dark glume color, and to detect variation in the expression of the structural genes from the flavonoid biosynthesis pathway in the ILs.…”

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confidence: 99%

Origin of black glume color in Triticum aestivum lines with introgressions from wheat wild relatives

et al. 2022

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ABSTRACT Dark color of a glume in Triticinae is a known morphological marker with studied genetic control. However, the pigments that provide the color development, molecular basis of their biosynthesis, and mechanisms of its regulation are still unknown. Dark color of glumes is a common trait in the Triticum aestivum lines with alien introgressions. To find out the basis of this trait, we studied nature of the compounds that color the glumes by analyzing the total phenolic content (TPC) in the dark glumed introgression lines (ILs) and comparing it to their parents. TPC in the dark ILs was found to be higher than in their parents and in the light lines. All studied genotypes were screened for the expression of eight genes encoding the flavonoid biosynthesis pathway enzymes. Expression of three flavonoid genes in the pathway were changed in the ILs compared to their parents. Firstly, the expression of F3’H and FNS was absent in the lines with introgressions from Aegilops spp. The expression of three genes, F3’H, FLS, and FNS, was found to be altered in the light lines with introgressions from A. muticum. No expression of the F3’H was detected in the T. aestivum / A. muticum lines with light and dark plants, and the other genes of the pathway were found to be expressed at the parental levels. No correlation between the expression profiles and the phenotype was found in the T. aestivum / A. muticum lines. So we hypothesized that other undetected changes are present in these lines.

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Beta-amylase gene variability in introgressive wheat lines

2016

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Variability of the beta-amylase gene in bread wheat, artificial amphidiploids, and derived introgression wheat lines was analyzed. Variation in homeologous beta-amylase sequences caused by the presence of MITE (Miniature Inverted-Repeat Transposable Element) and its footprint has been identified in bread wheat. The previously unknown location of MITE in Triticum urartu and T. aestivum L. beta-amylase gene has been found. These species have a MITE sequence in the third intron of beta-amylase, as opposed to Aegilops comosa and a number of other Triticeae species, which have it in the fourth intron. These two MITEs from Ae. comosa and T. aestivum were shown to have low identity scores. Miosa, an artificial amphidiploid, which has the M genome from Ae. comosa was shown to lose the MITE sequences. This loss might be caused by genomic shock due to allopolyploidization.

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Permanent genetic variability in the introgressive lines and amphidiploids of Triticeae

Cited by 6 publications

References 20 publications

Selection Evaluation of Introgressive Lines of Soft Winter Wheat With Signs of Resistance to Phytopathogens

Selection Evaluation of Introgressive Lines of Soft Winter Wheat With Signs of Resistance to Phytopathogens

Origin of black glume color in Triticum aestivum lines with introgressions from wheat wild relatives

Beta-amylase gene variability in introgressive wheat lines

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