An efficient marker-assisted backcrossing strategy for enhancing barley (Hordeum vulgare L.) production under acidity and aluminium toxicity

Soto‐Cerda, Braulio J.; Peñaloza, Enrique; Montenegro, A.; Rupayan, Annally; Gallardo, M.; Salvo-Garrido, Haroldo

doi:10.1007/s11032-013-9839-7

Cited by 10 publications

(4 citation statements)

References 59 publications

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“…Genomic DNA was amplified using 34 previously described SSR markers ( Liu et al , 1996 ; Röder et al , 1998 ; Ramsay et al , 2000 ; Varshney et al , 2007 ; Soto-Cerda et al , 2013 ) that are scattered throughout the barley genome. The details of the 34 SSR primers are available in .…”

Section: Methodsmentioning

confidence: 99%

Assessment of genetic diversity in Brazilian barley using SSR markers

et al. 2016

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Barley is a major cereal grown widely and used in several food products, beverage production and animal fodder. Genetic diversity is a key component in breeding programs. We have analyzed the genetic diversity of barley accessions using microsatellite markers. The accessions were composed of wild and domesticated barley representing genotypes from six countries and three breeding programs in Brazil. A total of 280 alleles were detected, 36 unique to Brazilian barley. The marker Bmag120 showed the greatest polymorphism information content (PIC), with the highest mean value found on chromosome three, and the lowest on chromosomes four and six. The wild accessions presented the highest diversity followed by the foreign genotypes. Genetic analysis was performed using Principal Coordinates Analysis, UPGMA clustering, and Bayesian clustering analysis implemented in Structure. All results obtained by the different methods were similar. Loss of genetic diversity has occurred in Brazilian genotypes. The number of alleles detected in genotypes released in 1980s was higher, whereas most of the cultivars released thereafter showed lower PIC and clustered in separate subgroups from the older cultivars. The use of a more diverse panel of genotypes should be considered in order to exploit novel alleles in Brazilian barley breeding programs.

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Section: Methodsmentioning

confidence: 99%

Assessment of genetic diversity in Brazilian barley using SSR markers

et al. 2016

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“…Introgression of Al resistance using marker-assisted backcrossing was obtained recently in barley (Soto-Cerda et al 2013). There is a short distance between the markers associated with the QTL located at chromosomes 7C-17A and 13, which are candidates for further analysis.…”

Section: Discussionmentioning

confidence: 99%

Chromosome-anchored QTL conferring aluminum tolerance in hexaploid oat

et al. 2015

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Aluminum (Al) toxicity is a major constraint on crop production in acid soils around the world. Hexaploid oat (Avena sativa L.) possesses significant Al tolerance making it a good candidate for production in these environments. Genetic improvement for Al tolerance in oat has traditionally been achieved through conventional plant breeding and could be enhanced by marker-assisted selection. The objectives of this study were to develop a chromosome-anchored genetic map for an oat recombinant inbred population and to identify SNP markers linked to quantitative trait loci (QTL) affecting root growth response to Al. Three QTL on chromosomes 7C-17A, 13A, and 19A conferring Al tolerance were identified using primary root regrowth of recombinant inbred lines derived from the cross between UFRGS 17 (Al tolerant) and UFRGS 930598-6 (Al sensitive). Localization of each QTL onto the sequenced rice genome revealed the genetic region on chromosome 13A might be associated with a putative malate transporter locus (LOC_Os06g15779). Studies of root apex tissue indicated that exudation of malate was increased in the Al-tolerant parent UFRGS17 and not in the sensitive parent. Based on these data, the malate transporter might be a candidate gene responsible for one of the Al tolerance QTL identified in this study.Electronic supplementary material The online version of this article (

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“…Improved lines were developed for drought tolerance in maize ( Ribaut, 2006 ), wheat ( Todkar et al, 2020 ), barley ( Baum et al, 2007 ), sorghum ( Kassahun et al, 2010 ), and pearl millet ( Kholová et al, 2016 ). Acid soils and aluminum (Al 3+ ) toxicity hamper barley production, and the introgression of the HvAACT1 gene which confers Al resistance in barley resulted in the development of an Al-resistant line with 121 % more seeds than its isogenic line in soil-based assays using 12 % Al saturation ( Soto-Cerda et al, 2013 ).…”

Section: Genomics-assisted Breedingmentioning

confidence: 99%

Genomic resources in plant breeding for sustainable agriculture

Thudi

Ramesh

Schnable

et al. 2021

Journal of Plant Physiology

121

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Climate change during the last 40 years has had a serious impact on agriculture and threatens global food and nutritional security. From over half a million plant species, cereals and legumes are the most important for food and nutritional security. Although systematic plant breeding has a relatively short history, conventional breeding coupled with advances in technology and crop management strategies has increased crop yields by 56 % globally between 1965−85, referred to as the Green Revolution. Nevertheless, increased demand for food, feed, fiber, and fuel necessitates the need to break existing yield barriers in many crop plants. In the first decade of the 21st century we witnessed rapid discovery, transformative technological development and declining costs of genomics technologies. In the second decade, the field turned towards making sense of the vast amount of genomic information and subsequently moved towards accurately predicting gene-to-phenotype associations and tailoring plants for climate resilience and global food security. In this review we focus on genomic resources, genome and germplasm sequencing, sequencing-based trait mapping, and genomics-assisted breeding approaches aimed at developing biotic stress resistant, abiotic stress tolerant and high nutrition varieties in six major cereals (rice, maize, wheat, barley, sorghum and pearl millet), and six major legumes (soybean, groundnut, cowpea, common bean, chickpea and pigeonpea). We further provide a perspective and way forward to use genomic breeding approaches including marker-assisted selection, marker-assisted backcrossing, haplotype based breeding and genomic prediction approaches coupled with machine learning and artificial intelligence, to speed breeding approaches. The overall goal is to accelerate genetic gains and deliver climate resilient and high nutrition crop varieties for sustainable agriculture.

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An efficient marker-assisted backcrossing strategy for enhancing barley (Hordeum vulgare L.) production under acidity and aluminium toxicity

Cited by 10 publications

References 59 publications

Assessment of genetic diversity in Brazilian barley using SSR markers

Assessment of genetic diversity in Brazilian barley using SSR markers

Chromosome-anchored QTL conferring aluminum tolerance in hexaploid oat

Genomic resources in plant breeding for sustainable agriculture

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