Abstract
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.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Weak development of B. graminis was observed during the heading phase on plants of 38 barley accessions from the East Asian center.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Material
- 38 barley accessionse1
- Organ / stage
- heading phasee1
- Interactor
- B. graminis
Blumeria graminise1pathogen - Outcome
- development of B. graminise1
- Qualifier
- Weake1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Genetic diversity of barley accessions”
e1“Weak development of B. graminis during the heading phase was observed on plants of 38 barley accessions from the East Asian center”
Claim · model-written summary
High resistance at all stages of development was shown by 20 barley genotypes that can be used in breeding programs.
- Taxon
- barleyHordeum vulgaret0
- Material
- 20 genotypese2
- Organ / stage
- all stages of developmente2
- Outcome
- High resistancee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity of barley accessions”
e2“High resistance at all stages of development was manifested by 20 genotypes that can be used in breeding programs”
Claim · model-written summary
Resistance genes in 18 selected barley forms differed in their effectiveness at the seedling stage and during the heading phase.
- Taxon
- barleyHordeum vulgaret0
- Material
- 18 selected formse3
- Organ / stage
- seedling stage of developmente3
- Gene
- Resistance genese3
- Outcome
- effectivenesse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity of barley accessions”
e3“Resistance genes in 18 selected forms differed in their effectiveness at the seedling stage of development and during the heading phase”
Claim · model-written summary
Nine barley accessions each carry one dominant resistance gene.
- Taxon
- barleyHordeum vulgaret0
- Material
- k-3433, k-10931, k-10934, k-11608, k-17545, k-20272, k-20279, k-20354 and k-27867e4
- Gene
- dominant resistance genee4
- Outcome
- one dominant resistance gene eache4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity of barley accessions”
e4“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”
Claim · model-written summary
Accessions k-11608, k-12278 and k-17545 are protected by the identical resistance gene.
- Taxon
- barleyHordeum vulgaret0
- Material
- k-11608, k-12278, and k-17545e5
- Gene
- identical genee5
- Outcome
- protected by the identical genee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity of barley accessions”
e5“Accessions k-11608, k-12278, and k-17545 are protected by the identical gene”
Claim · model-written summary
The resistance of accession k-3433 is induced by a gene that differs from the genes present in accessions k-10931 and k-20279.
- Taxon
- barleyHordeum vulgaret0
- Material
- k-3433e6
- Gene
- a genee6
- Outcome
- resistance of k-3433e6
- Qualifier
- differs from the genes present in accessions k-10931 and k-20279e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity of barley accessions”
e6“while the resistance of k-3433 is induced by a gene that differs from the genes present in accessions k-10931 and k-20279”