Evaluation the effects of powdery mildew caused by Blumeria graminis f. sp. hordei and cultivar on the barley lodging

Marzani, Qasim Abdullah; Amin, Muhsen M; Fateh, Shirkoo A

doi:10.1007/s10658-022-02601-y

Cited by 3 publications

(3 citation statements)

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“…In all three years, 61 differentials were used, but no virulence was detected on 14 of these (nos. [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. A rare virulence (VF 0.3-5.0%) was recorded on 18 host genotypes (nos.…”

Section: Virulence Of Isolates and Virulence Frequency Of The Populationmentioning

confidence: 99%

“…In the Qinghai-Tibet plateau barley is the most important cereal crop and in recent years yield has been seriously threatened by PM [3]. Among 41 barley diseases occurring in Australia, PM causes the second highest yield losses [4] and on varieties infected by PM, more lodging occurs with an associated effect on other traits including grain yield [5].…”

Section: Introductionmentioning

confidence: 99%

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Rare Virulences and Great Pathotype Diversity of a Central European Blumeria hordei Population

Dreiseitl

2023

JoF

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Barley is an important crop grown on almost 49 Mha worldwide in 2021 and is particularly significant in Europe where powdery mildew is the most frequent disease on susceptible varieties. The most suitable way to protect crops is by exploiting genetic resistance. However, the causal agent Blumeria hordei is an extremely adaptable pathogen. The aims of this research were to increase our knowledge of the rapidly changing pathogen population and detect rare virulences. Random samples of the pathogen were obtained from the air by means of a mobile spore sampler. Spores were collected by driving across the Czech Republic in 2019, 2021 and 2023, and 299 isolates were analyzed on 121 host varieties. No infection occurred on 35 differentials, rare virulence was recorded on 31 varieties and a higher virulence frequency was found on 55 differentials. A core set of differentials along with four additional varieties distinguishes 295 pathotypes (Simple Index = 0.987) and the virulence complexity of isolates varied from 4 to 19 with an average of 10.39. The detection of new virulences, the increasing frequency of previously rare virulences and high pathotype diversity as well as high virulence complexity confirm that using nonspecific durable resistance is crucial for successfully breeding commercial varieties.

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Section: Virulence Of Isolates and Virulence Frequency Of The Populationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rare Virulences and Great Pathotype Diversity of a Central European Blumeria hordei Population

Dreiseitl

2023

JoF

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“…Патоген может приводить к значительному снижению урожая культуры, которое может составлять 30-50% (Gong et al, 2013;Tratwal, Bocianowski, 2014). Недавние исследования показали, что болезнь оказывает существенное влияние на полегание, а это в свою очередь усложняет процесс уборки и приводит к дополнительным потерям (Dahiya et al, 2018;Marzani et al, 2022). Наиболее выгодным и экологически безопасным способом борьбы с болезнью для увеличения сбора зерна ячменя считается селекция на иммунитет (Radchenko et al, 2020).…”

Section: Introductionunclassified

Genetic diversity of barley accessions from East Asian countries in terms of resistance to powdery mildew

Abdullaev,

Lukina,

Batasheva

et al. 2023

Trudy po prikladnoy botanike, genetike i selektsii

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Background. Barley is an ancient crop currently cultivated in more than 100 countries. High adaptability makes it possible to cultivate it in environments unfavorable for many other crops. At the same time, fungal diseases can have a negative impact on its grain yield and quality. One of the most harmful is the fungus Blumeria graminis (DC.) Golovin ex Speer f. sp. hordei Marchal. The pathogen can overcome a cultivar’s resistance, resulting in significant harvest losses. There is a need for a constant search for new effective sources of resistance to powdery mildew for barley breeding.Materials and methods. A set of 950 barley accessions from the East Asian center of the crop’s morphogenesis were studied at the adult stage of plant development. They were screened and crossed in the fields of Pushkin and Pavlovsk Laboratories of VIR (St. Petersburg, Russia). Genetic control of barley resistance to B. graminis was analyzed in a climate chamber under artificial infection pressure with the northwestern population of the fungus. Scoring scales were used for screening.Results and conclusions. Weak development of B. graminis during the heading phase was observed on plants of 38 barley accessions from the East Asian center. High resistance at all stages of development was manifested by 20 genotypes that can be used in breeding programs. Resistance genes in 18 selected forms differed in their effectiveness at the seedling stage of development and during the heading phase. Accessions k-3433, k-10931, k-10934, k-11608, k-17545, k-20272, k-20279, k-20354 and k-27867 had one dominant resistance gene each. Accessions k-11608, k-12278, and k-17545 are protected by the identical gene, while the resistance of k-3433 is induced by a gene that differs from the genes present in accessions k-10931 and k-20279.

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Rare Virulences and Great Pathotype Diversity of a Central European Blumeria hordei Population

Dreiseitl

2023

Preprint

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Barley is an important crop grown on almost 49 Mha worldwide in 2021 and is particu-larly significant in Europe where powdery mildew is the most frequent disease on sus-ceptible varieties. The most suitable way for protecting crops is exploiting genetic re-sistance. However, the causal agent Blumeria hordei is an extremely adaptable pathogen. The aims of this research were to increase our knowledge of the rapidly changing path-ogen population and detect rare virulences. Random samples of the pathogen were ob-tained from the air by means of a mobile spore sampler. Spores were collected by driv-ing across the Czech Republic in 2019, 2021 and 2023 and 299 isolates were analyzed on 121 host varieties. No infection occurred on 35 differentials, rare virulence was recorded on 31 varieties and a higher virulence frequency was found on 55 differentials. A core set of differentials along with four additional varieties distinguish 295 pathotypes (Simple Index = 0.987) and virulence complexity of isolates varied from 4 to 19 with an average 10.39. The detection of new virulences, the increasing frequency of previously rare viru-lences and high pathotype diversity as well as high virulence complexity confirm that using nonspecific durable resistance is crucial for successfully breeding commercial va-rieties.

show abstract

Evaluation the effects of powdery mildew caused by Blumeria graminis f. sp. hordei and cultivar on the barley lodging

Cited by 3 publications

References 24 publications

Rare Virulences and Great Pathotype Diversity of a Central European Blumeria hordei Population

Rare Virulences and Great Pathotype Diversity of a Central European Blumeria hordei Population

Genetic diversity of barley accessions from East Asian countries in terms of resistance to powdery mildew

Rare Virulences and Great Pathotype Diversity of a Central European Blumeria hordei Population

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