Drought Tolerance in Recombinant Chromosome Substitution Lines (RCSLs) Derived from the Cross Hordeum vulgare subsp. spontaneum (Caesarea 26-24) × Hordeum. vulgare subsp. vulgare cv. Harrington

Inostroza, Luis; Pozo, L Alejandro del; Matus, Iván; Hayes, Patrick

doi:10.4067/s0365-28072007000300004

Cited by 5 publications

(4 citation statements)

References 14 publications

(25 reference statements)

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“…citroides PIs into watermelon cultivars. These populations should exhibit normal segregation ratios for a large number of markers, as was suggested in genetic improvement studies of barley [24]. These advanced recombinant populations can be useful for genetic mapping and the identification of chromosomal segments that were introgressed from the genome of a C. lanatus var.…”

Section: Introductionmentioning

confidence: 99%

An Extended Genetic Linkage Map for Watermelon Based on a Testcross and a BC2F2 Population

Levi¹,

Wechter²,

Massey³

et al. 2011

AJPS

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Section: Introductionmentioning

confidence: 99%

An Extended Genetic Linkage Map for Watermelon Based on a Testcross and a BC2F2 Population

Levi¹,

Wechter²,

Massey³

et al. 2011

AJPS

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“…Although the study was designed to identify quantitative traits, we were able to characterise and genetically dissect adaptive traits associated with the wild barley donor that had not been reported in previous studies of the RCSLs [ 9 , 35 – 37 , 51 ]. One such trait, which requires detailed observations, is spike glossiness.…”

Section: Discussionmentioning

confidence: 99%

“…For the present study, we used the Recombinant Chromosome Substitution Lines (RCSLs) developed by Matus et al [ 9 ]. This was one of the first AB-populations developed using barley as a model crop and several studies have shown the potential of the lines for exploring novel allelic combinations for malting traits as well as for drought resistance and agronomic traits [ 9 , 35 – 37 ]. Considering these previous studies, our main goal was to effectively decipher the genetics underlying the variation for qualitative and quantitative traits using a minimum group of lines representing the genome of the exotic wild barley accession, Caesarea 26–24, in the genetic background of the elite North American spring malting barley, cv.…”

Section: Introductionmentioning

confidence: 99%

Genetic dissection of quantitative and qualitative traits using a minimum set of barley Recombinant Chromosome Substitution Lines

et al. 2018

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BackgroundExploring the natural occurring genetic variation of the wild barley genepool has become a major target of barley crop breeding programmes aiming to increase crop productivity and sustainability in global climate change scenarios. However this diversity remains unexploited and effective approaches are required to investigate the benefits that unadapted genomes could bring to crop improved resilience. In the present study, a set of Recombinant Chromosome Substitution Lines (RCSLs) derived from an elite barley cultivar ‘Harrington’ as the recurrent parent, and a wild barley accession from the Fertile Crescent ‘Caesarea 26–24’, as the donor parent (Matus et al. Genome 46:1010–23, 2003) have been utilised in field and controlled conditions to examine the contribution of wild barley genome as a source of novel allelic variation for the cultivated barley genepool.MethodsTwenty-eight RCSLs which were selected to represent the entire genome of the wild barley accession, were genotyped using the 9 K iSelect SNP markers (Comadran et al. Nat Genet 44:1388–92, 2012) and phenotyped for a range of morphological, developmental and agronomic traits in 2 years using a rain-out shelter with four replicates and three water treatments. Data were analysed for marker traits associations using a mixed model approach.ResultsWe identified lines that differ significantly from the elite parent for both qualitative and quantitative traits across growing seasons and water regimes. The detailed genotypic characterisation of the lines for over 1800 polymorphic SNP markers and the design of a mixed model analysis identified chromosomal regions associated with yield related traits where the wild barley allele had a positive response increasing grain weight and size. In addition, variation for qualitative characters, such as the presence of cuticle waxes on the developing spikes, was associated with the wild barley introgressions. Despite the coarse location of the QTLs, interesting candidate genes for the major marker-trait associations were identified using the recently released barley genome assembly.ConclusionThis study has highlighted the role of exotic germplasm to contribute novel allelic variation by using an optimised experimental approach focused on an exotic genetic library. The results obtained constitute a step forward to the development of more tolerant and resilient varieties.Electronic supplementary materialThe online version of this article (10.1186/s12870-018-1527-7) contains supplementary material, which is available to authorized users.

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“…H. vulgare subsp. spontaneum has been used widely by plant breeders for its soil salinity tolerance (Shavrukov et al ., 2010), drought tolerance (Inostroza et al ., 2013) as well as other traits (Vincent et al ., 2013). Oat ( Avena sativa L.) has 29 CWR with A. byzantina K. Kock, A. fatua L., A. hybrida Peterm., A. occidentalis Durieu, A. sterilis L., A. trichophylla K. Koch in the primary genepool and the remaining taxa in the secondary and tertiary genepools (Vincent et al ., 2013).…”

Section: Introductionmentioning

confidence: 99%

Anin situapproach to the conservation of temperate cereal crop wild relatives in the Mediterranean Basin and Asian centre of diversity

Phillips

Whitehouse

Maxted

2019

Plant Genet. Resour.

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Cereal crops are one of the most widely consumed and most valuable crops for humankind. The species have been domesticated for over 10,000 years and as such have lost much of the genetic diversity that is present within their wild relatives. Future breeding efforts will require the use of genetic diversity from crop wild relatives (CWRs) to help improve our cereal crops. This study aims to identify an in situ conservation network within the Mediterranean Basin and west Asia for the four cereal crops, barley (Hordeum L.), oat (Avena L.), rye (Secale L.) and wheat (Aegilops L., Amblyopyrum L., Triticum L.). This region is a centre of diversity for these taxa and an area of potentially high genetic diversity, which if left unprotected will not be available for plant breeders to utilize in the future. Presence point data for a total of 90 taxa were collected from GBIF and resulted in 76,343 individual presence points across the 44 countries in the study region. Geographic Information System (GIS) software was used to identify potential in situ reserve networks per crop genepool and for all crops combined. Results indicate a network of 10 locations across the region which would protect over 80% of the taxa. The number one priority reserve is found within the Fertile Crescent region on the border of Israel, Syria and Jordan. This proposed reserve location contains 93 currently protected areas (i.e. National Parks) and as such, it may only be necessary to alter management plans to effectively protect CWR populations. For taxa not found within protected areas ex situ conservation may be more appropriate and should be implemented as a backup to the in situ reserve network.

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Drought Tolerance in Recombinant Chromosome Substitution Lines (RCSLs) Derived from the Cross Hordeum vulgare subsp. spontaneum (Caesarea 26-24) × Hordeum. vulgare subsp. vulgare cv. Harrington

Abstract: R E S U M E NSe estudió el rendimiento de grano (GY) y la tolerancia a la sequía de líneas recombinantes con substitución de cromosomas (RCSLs), provenientes de la cruza entre Hordeum vulgare L. subsp.

Cited by 5 publications

References 14 publications

An Extended Genetic Linkage Map for Watermelon Based on a Testcross and a BC<sub>2</sub>F<sub>2</sub> Population

An Extended Genetic Linkage Map for Watermelon Based on a Testcross and a BC<sub>2</sub>F<sub>2</sub> Population

Genetic dissection of quantitative and qualitative traits using a minimum set of barley Recombinant Chromosome Substitution Lines

Anin situapproach to the conservation of temperate cereal crop wild relatives in the Mediterranean Basin and Asian centre of diversity

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Drought Tolerance in Recombinant Chromosome Substitution Lines (RCSLs) Derived from the Cross Hordeum vulgare subsp. spontaneum (Caesarea 26-24) × Hordeum. vulgare subsp. vulgare cv. Harrington

Abstract: R E S U M E NSe estudió el rendimiento de grano (GY) y la tolerancia a la sequía de líneas recombinantes con substitución de cromosomas (RCSLs), provenientes de la cruza entre Hordeum vulgare L. subsp.

Cited by 5 publications

References 14 publications

An Extended Genetic Linkage Map for Watermelon Based on a Testcross and a BC&lt;sub&gt;2&lt;/sub&gt;F&lt;sub&gt;2&lt;/sub&gt; Population

An Extended Genetic Linkage Map for Watermelon Based on a Testcross and a BC&lt;sub&gt;2&lt;/sub&gt;F&lt;sub&gt;2&lt;/sub&gt; Population

Genetic dissection of quantitative and qualitative traits using a minimum set of barley Recombinant Chromosome Substitution Lines

Anin situapproach to the conservation of temperate cereal crop wild relatives in the Mediterranean Basin and Asian centre of diversity

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An Extended Genetic Linkage Map for Watermelon Based on a Testcross and a BC<sub>2</sub>F<sub>2</sub> Population

An Extended Genetic Linkage Map for Watermelon Based on a Testcross and a BC<sub>2</sub>F<sub>2</sub> Population