Hybrid wheat: past, present and future

Gupta, P. K.; Balyan, H. S.; Gahlaut, Vijay; Saripalli, Gautam; Pal, Bijendra; Basnet, Bhoja R.; Joshi, Arun Kumar

doi:10.1007/s00122-019-03397-y

Cited by 95 publications

(74 citation statements)

References 108 publications

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“…While the most commonly used restorer cytoplasm in wheat hybrid breeding is derived from Triticum timopheevii Zhuk. (CMS-T) 57 , alternative sterility-conferring cytoplasms acquired from Aegilops kotschyi Bois., Ae. uniaristata Vis.…”

Section: Resultsmentioning

confidence: 99%

Chromosome-scale genome assembly provides insights into rye biology, evolution, and agronomic potential

Rabanus‐Wallace

Hackauf

Mascher

et al. 2019

Preprint

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We present a chromosome-scale annotated assembly of the rye (Secale cereale L. inbred line ‘Lo7’) genome, which we use to explore Triticeae genomic evolution, and rye’s superior disease and stress tolerance. The rye genome shares chromosome-level organization with other Triticeae cereals, but exhibits unique retrotransposon dynamics and structural features. Crop improvement in rye, as well as in wheat and triticale, will profit from investigations of rye gene families implicated in pathogen resistance, low temperature tolerance, and fertility control systems for hybrid breeding. We show that rye introgressions in wheat breeding panels can be characterised in high-throughput to predict the yield effects and trade-offs of rye chromatin.

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Section: Resultsmentioning

confidence: 99%

Chromosome-scale genome assembly provides insights into rye biology, evolution, and agronomic potential

Rabanus‐Wallace

Hackauf

Mascher

et al. 2019

Preprint

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show abstract

“…Heterogeneity of hybrid cultivars (F 1 generation) can be caused by more than two genotypes involved in their formation, for example a male sterile female parent, a fertility restorer male parent and fertile maintainer 6 . Heterogeneity may also result from self-pollination if the cytoplasmic male sterility becomes unstable through environmental factors including temperature 35 .…”

Section: Discussionmentioning

confidence: 99%

“…Barley and wheat genomes have already been well-characterised 2 , 3 and can be readily modified with CRISPR techniques 4 . This method could be used to select suitable parents for making crosses between those with high combining ability and achieve higher and more stable yields 5 , 6 . Another recent advance in breeding technology, apomixis, could also be adopted to fix hybrid heterosis in subsequent generations 7 .…”

Section: Introductionmentioning

confidence: 99%

A novel way to identify specific powdery mildew resistance genes in hybrid barley cultivars

Dreiseitl

2020

Sci Rep

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Powdery mildew, a common cereal disease caused by the fungus Blumeria graminis, is a major limiting factor of barley production and genetic resistance is the most appropriate protection against it. To aid the breeding of new cultivars and their marketing, resistance genes can be postulated in homogeneous accessions. Although hybrid cultivars (F1) should be homogeneous, they are often not genetically uniform, especially if more than two genotypes are involved in their seed production or due to undesirable self-pollination, out-crossing and mechanical admixtures. To overcome these problems the accepted method of postulating specific resistance genes based on comparing response type arrays (RTAs) of genetically homogeneous cultivars with RTAs of standard genotypes was substituted by analysing the frequency of response types to clusters of pathogen isolates in segregating F2 generations. This method combines a genetic and phytopathological approach for identifying resistance genes. To assess its applicability six hybrid cultivars were screened and from three to seven with a total of 14 resistance genes were found. Two genes were newly located at the Mla locus and their heritability determined. In addition, three unknown dominant genes were detected. This novel, comprehensive and efficient method to identifying resistance genes in hybrid cultivars can also be applied in other cereals and crops.

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“…The validation of both methods in wheat warrants further investigation. Once validated, these techniques could be applied in future "omics" prediction studies in wheat, especially as hybrid breeding is gaining ground as a new strategy for genetic improvement in wheat [151].…”

Section: Application Of Other "Omics" In Gsmentioning

confidence: 99%

Potential of Genomic Selection and Integrating “Omics” Data for Disease Evaluation in Wheat

2020

Crop Breed Genet Genom.

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Diseases are among the most important limiting factors for wheat production. Breeding for fungal diseases of wheat, primarily for rusts and Fusarium head blight (FHB), are major resource consuming activities in most breeding programs which prevent breeders from focusing entirely on improving yield. Breeding for these diseases is challenging because resistance is inherited mostly in a quantitative fashion and is greatly influenced by weather conditions. Recent advances in genomics, phenomics and big-data analysis provide opportunities for accelerating the development of low-cost and efficient selection methods for such complex traits. Genomic selection (GS) may provide opportunities for

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Hybrid wheat: past, present and future

Cited by 95 publications

References 108 publications

Chromosome-scale genome assembly provides insights into rye biology, evolution, and agronomic potential

Chromosome-scale genome assembly provides insights into rye biology, evolution, and agronomic potential

A novel way to identify specific powdery mildew resistance genes in hybrid barley cultivars

Potential of Genomic Selection and Integrating “Omics” Data for Disease Evaluation in Wheat

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