Greenbug resistance in barley accessions from East and South Asia

Radchenko, E. E.; Кузнецова, Т. Л.; Звейнек, И. А.; Ковалева, Ольга Николаевна

doi:10.3103/s1068367414020177

Cited by 10 publications

(7 citation statements)

References 6 publications

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“…Ранее мы нашли, что наиболее устойчивы к обыкновенной злаковой тле местные образцы зернового сорго из Китая (Radchenko, 2000), продемонстрировали высокую частоту устойчивых к Sсh. graminum образцов среди местных ячменей из стран Восточной и Южной Азии (Radchenko et al, 2014), выявили значительное число устойчивых форм среди местных образцов овса из ряда стран Азии (Radchenko et al, 2018). Наконец, свыше половины образцов овса из Казахстана имеют более или менее эффективные гены устойчивости к насекомому.…”

Section: Discussionunclassified

GREENBUG RESISTANCE OF OAT LANDRACES FROM CENTRAL ASIA К ОБЫКНОВЕННОЙ ЗЛАКОВОЙ ТЛЕ

2020

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The greenbug (Sсhizaphis graminum) is a dangerous pest of cereals in Southern Russia. Breeding of resistant varieties is an effective and eco-friendly way to control this insect. Its differential interaction with host plants substantiates the search for new resistance donors. We evaluated 276 accessions of oat landraces from Central Asian countries (Kazakhstan, Uzbekistan, Kyrgyzstan, and Turkmenistan) to the Krasnodar population and respective isolated clones of the aphid. We identified two pest resistant accessions from Kazakhstan (k-6945 and k-8691) and found 133 accessions from Kazakhstan being heterogeneous including 77 forms with high and moderate resistance and 56 – with only moderate resistance. All accessions from Uzbekistan and Turkmenistan were susceptible to Sсh. graminum. Accession k-9993 from Kyrgyzstan was heterogeneous in terms of resistance. A wide variation in the damage degree of the most oat forms was mostly due to the virulence heterogeneity of the aphid population. Damage evaluation of 15 accessions from Kazakhstan by Sсh. graminum clones showed that the alleles of greenbug resistance genes of these forms differ from the previously identified Grb1 and Grb3 genes.

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Section: Discussionunclassified

GREENBUG RESISTANCE OF OAT LANDRACES FROM CENTRAL ASIA К ОБЫКНОВЕННОЙ ЗЛАКОВОЙ ТЛЕ

2020

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“…The high resistance of 98 accessions is controlled by alleles that are not identical to alleles of the previously identified Rsg1 gene. The occurrence of resistant forms is the highest among the material from the provinces of Shaanxi, Shanxi, and Henan in the Central Natural Region of China, which may be due to favorable conditions for aphids development and the duration of S. graminum coexistence with barley [ 251 ].…”

Section: Gene Pool and Cereal Crops Breeding For Resistance To Aphidsmentioning

confidence: 99%

Genetic Resources of Cereal Crops for Aphid Resistance

Radchenko

Абдуллаев

Anisimova

2022

Plants

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The genetic resources of cereal crops in terms of resistance to aphids are reviewed. Phytosanitary destabilization led to a significant increase in the harmfulness of this group of insects. The breeding of resistant plant genotypes is a radical, the cheapest, and environmentally safe way of pest control. The genetic homogeneity of crops hastens the adaptive microevolution of harmful organisms. Both major and minor aphid resistance genes of cereal plants interact with insects differentially. Therefore, rational breeding envisages the expansion of the genetic diversity of cultivated varieties. The possibilities of replenishing the stock of effective resistance genes by studying the collection of cultivated cereals, introgression, and creating mutant forms are considered. The interaction of insects with plants is subject to the gene-for-gene relationship. Plant resistance genes are characterized by close linkage and multiple allelism. The realizing plant genotype depends on the phytophage biotype. Information about the mechanisms of constitutional and induced plant resistance is discussed. Resistance genes differ in terms of stability of expression. The duration of the period when varieties remain resistant is not related either to its phenotypic manifestation or to the number of resistance genes. One explanation for the phenomenon of durable resistance is the association of the virulence mutation with pest viability.

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“…The insects did not prefer those plants for nutrition but negatively affected their development. A polygenic control of this resistance was assumed (Radchenko and Tyryshkin, 2004).…”

Section: Geneticsmentioning

confidence: 99%

The ideas of N.I. Vavilov and current problems of crop genetics

Anisimova

Radchenko

2020

BioComm

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Some results of the studies of plant genetic resources held in the VIR Department of Genetics are discussed in light of N. I. Vavilov’s theories of natural plant immunity, homologous series in hereditary variability, and interspecific hybridization. The long-term investigations resulted in identifying bread wheat, cultivated barley, oat, rye and sorghum accessions with new effective genes for resistance to diseases and pests. The large-scale immunological screening has revealed a narrow genetic diversity in wheat and barley for resistance to biotic and abiotic stressors. On the example of sunflowers, the significance of seed storage proteins for solving problems of domestication and introgressive hybridizations is demonstrated.

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Greenbug resistance in barley accessions from East and South Asia

Cited by 10 publications

References 6 publications

GREENBUG RESISTANCE OF OAT LANDRACES FROM CENTRAL ASIA К ОБЫКНОВЕННОЙ ЗЛАКОВОЙ ТЛЕ

GREENBUG RESISTANCE OF OAT LANDRACES FROM CENTRAL ASIA К ОБЫКНОВЕННОЙ ЗЛАКОВОЙ ТЛЕ

Genetic Resources of Cereal Crops for Aphid Resistance

The ideas of N.I. Vavilov and current problems of crop genetics

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