THE DIFFERENTIATION OF WINTER WHEAT (Triticum aestivum L.) CULTIVARS FOR RESISTANCE TO THE MOST HARMFUL FUNGAL PATHOGENS

Киселева, М. И.; Kolomiets, T. M.; Pakholkova, E.V.; Жемчужина, Н. С.; Liubych, V. V.

doi:10.15389/agrobiology.2016.3.299eng

Cited by 10 publications

(7 citation statements)

References 17 publications

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“…is the most widespread and dangerous one. In Russia, this disease occurs annually in all regions of winter and spring wheat cultivation, and accounts for crop losses of 40% or more [1,2]. Significant damage from leaf rust occurs in the Volga, Central, North Caucasus and Ural regions.…”

Section: Introductionmentioning

confidence: 99%

Genome-wide association study of leaf rust resistance in Russian spring wheat varieties

2020

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Background Leaf rust (Puccinia triticina Eriks.) is one of the most dangerous diseases of common wheat worldwide. Three approaches: genome-wide association study (GWAS), marker-assisted selection (MAS) and phytopathological evaluation in field, were used for assessment of the genetic diversity of Russian spring wheat varieties on leaf rust resistance loci and for identification of associated molecular markers. Results The collection, consisting of 100 Russian varieties of spring wheat, was evaluated over three seasons for resistance to the native population of leaf rust specific to the West Siberian region of Russia. The results indicated that most cultivars showed high susceptibility to P. triticina, with severity ratings (SR) of 60S–90S, however some cultivars showed a high level of leaf rust resistance (SR < 20MR-R). Based on the results of genome-wide association studies (GWAS) performed using the wheat 15 K genotyping array, 20 SNPs located on chromosomes 6D, 6A, 6B, 5A, 1B, 2A, 2B and 7A were revealed to be associated with leaf rust resistance. Genotyping with markers developed for known leaf rust resistance genes showed that most of the varieties contain genes Lr1, Lr3a, Lr9, Lr10, Lr17a, Lr20, Lr26 and Lr34, which are not currently effective against the pathogen. In the genome of three wheat varieties, gene Lr6Ai = 2 inherited from Th. intermedium was detected, which provides complete protection against the rust pathogen. It has been suggested that the QTL mapped to the chromosome 5AS of wheat cultivar Tulaikovskaya-zolotistaya, Tulaikovskaya-10, Samsar, and Volgouralskaya may be a new, previously undescribed locus conferring resistance to leaf rust. Obtained results also indicate that chromosome 1BL of the varieties Sonata, Otrada-Sibiri, Tertsiya, Omskaya-23, Tulaikovskaya-1, Obskaya-14, and Sirena may contain an unknown locus that provides a resistance response to local population. Conclusions This study provides new insights into the genetic basis of resistance to leaf rust in Russian spring wheat varieties. The SNPs significantly associated with leaf rust resistance can be used for the development and application of diagnostic markers in marker-assisted selection schemes.

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Section: Introductionmentioning

confidence: 99%

Genome-wide association study of leaf rust resistance in Russian spring wheat varieties

2020

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“…Wholegrain emmer wheat cereal is highly competitive due to increased biological value, in particular, increased protein content, including a significant proportion of water-and salt-soluble fractions [24]. In addition, emmer wheat is tolerant to certain diseases and adverse climatic conditions [38]. This creates prerequisites for growing this crop through organic farming.…”

Section: Discussion Of the Results Of The Study Of Processing Emmer Wmentioning

confidence: 99%

Effect of electromagnetic irradiation of emmer wheat grain on the yield of flattened wholegrain cereal

Osokina

Liubych

Novikov

et al. 2020

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“…Е-mail: LyubichV@gmail.com Постановка проблеми та аналіз останніх досліджень. Пшениця (Triticum aestivum L.) -одна з основних зернових культур не тільки в Україні, а й у всьому світі [1]. Серед усього комплексу агротехнологічних заходів, за умови достатньої забезпеченості рослин вологою, добрива виступають найдієвішим чинником формування врожайності зернових культур [2].…”

Section: уманський національний університет садівництваunclassified

Infestation of soft spring wheat by leaf diseases depending on nitrogen nutrition

2022

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Infestation of soft spring wheat plants depends on the growth stage and weather conditions of the growing season. Plants have the highest resistance to brown rust in the tillering stage. Brown rust developed in 2014 throughout the growing season. The lowest infestation intensity was during tillering – booting stage, which did not change from the experiment variant – 5.0 %. The lowest spread of brown rust was in the tillering stage – 10 %, in the booting stage – 40 %. The resistance was assessed 8 points. In the earing stage, the infestation intensity increased in no fertilizer variants and P30K30 to 8.0–8.2 % or by 60 % with a resistance of 7 points. This indicator in the variants with nitrogen fertilizers was 4.1–4.3 % with a resistance of 8 points, but all stems were infected (100 % spread). Affected leaves were in the middle layer, as their resistance by E. E. Saari and J. M. Prescott scale was at 5 points. Plants had the least resistance to brown rust in the milk stage of soft spring wheat grain. The intensity increased to 15.2–18.7 % or 2.1–4.7 times compared to the earing stage. The lowest resistance was assessed 6 points. All leaves were affected (resistance by E. E. Saari and J. M. Prescott scale – 1 point). In 2015, brown rust appeared in the milk stage of soft spring wheat grain. However, the infestation intensity was insignifcant – 5.0–6.5 % depending on the experiment variant. The prevalence of brown rust decreased from 60 % in unfertilized areas to 30 % on phosphorus–potassium background and up to 10 % with nitrogen fertilizers. Plant resistance was high – 7–8 points depending on the experiment variant. Powdery mildew develops throughout the growing season of both research years. In 2014, the infestation intensity is the lowest in the tillering stage – 7.7–8.0 % with 50 % spread, with the resistance of 7 points. In the booting stage of plants, the infestation intensity increased to 44.1–46.8 % or 5.8–5.9 times compared to the tillering stage. All plants were affected, and the resistance was 3 points. In subsequent stages of growth, the intensity of powdery mildew increased. Thus, in the earing stage this indicator increased to 65.1–69.2 % or 8.5–8.7 times, and in the milk stage – 9.5–9.7 times compared to tillering depending on the fertilizer. The stems of soft spring wheat were all affected, and the resistance was 2 points. Key words: brown leaf rust, powdery mildew, infestation intensity, spread, resistance.

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THE DIFFERENTIATION OF WINTER WHEAT (Triticum aestivum L.) CULTIVARS FOR RESISTANCE TO THE MOST HARMFUL FUNGAL PATHOGENS

Cited by 10 publications

References 17 publications

Genome-wide association study of leaf rust resistance in Russian spring wheat varieties

Genome-wide association study of leaf rust resistance in Russian spring wheat varieties

Effect of electromagnetic irradiation of emmer wheat grain on the yield of flattened wholegrain cereal

Infestation of soft spring wheat by leaf diseases depending on nitrogen nutrition

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