Barley: Genes and chromosomes

Søgaard, Bodil; Wettstein-Knowles, Penny von

doi:10.1007/bf02907531

Cited by 130 publications

(43 citation statements)

References 265 publications

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“…A second locus was detected on the long arm of chromosome 2H in 3 populations (Alexis/Sloop-DH, Sloop/Alexis-RIL, and Chebec/Harrington). This QTL accounted for 23-47% of the phenotypic variation and mapped to the same chromosomal region as morphological markers ant2 (anthocyanin-less) and Re2 (purple lemma, palea, and pericarp) (Søgaard and Wettstein-Knowles 1987). In the present study we showed that Min a is independent of Min L. Min L is the only measurement for grain colour used in the commercial barley grain receiving points in Western Australia.…”

Section: Penasupporting

confidence: 54%

Quantitative trait loci controlling kernel discoloration in barley (Hordeum vulgare L.)

Li¹,

Lance²,

Collins³

et al. 2003

Aust. J. Agric. Res.

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Abstract. Barley kernel discoloration (KD) leads to substantial annual loss in value through downgrading and discounting of malting barley. KD is a difficult trait to introgress into elite varieties as it is controlled by multiple genes and strongly influenced by environment and maturity. As the first step towards marker assisted selection for KD tolerance, we mapped quantitative trait loci (QTLs) controlling KD measured by grain brightness [Minolta L; (Min L)], redness (Min a), and yellowness (Min b) in 7 barley populations. One to 3 QTLs were detected for grain brightness in various populations, and one QTL could account for 5-31% of the phenotypic variation. The QTL located around the centromere region of chromosome 2H was consistently detected in 6 of the 7 populations, explaining up to 28% of the phenotypic variation. In addition, QTLs for grain brightness were most frequently identified on chromosomes 3H and 7H in various populations. Australian varieties Galleon, Chebec, and Sloop contribute an allele to increase grain brightness on chromosome 7H in 3 different populations. A major gene effect was detected for grain redness. One QTL on chromosome 4H explained 54% of the phenotypic variation in the Sloop/Halcyon population, and was associated with the blue aleurone trait. A second QTL was detected on the long arm of chromosome 2H in 3 populations, accounting for 23-47% of the phenotypic variation. The major QTLs for grain yellowness were mapped on chromosomes 2H and 5H. There were strong associations between the QTLs for heading date, grain brightness, and yellowness. The molecular markers linked with the major QTLs should be useful for marker assisted selection for KD.

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Section: Penasupporting

confidence: 54%

Quantitative trait loci controlling kernel discoloration in barley (Hordeum vulgare L.)

Li¹,

Lance²,

Collins³

et al. 2003

Aust. J. Agric. Res.

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“…To allow a more complete comparison of gene amp position it is necessary to place other markers on the 'Lina' x 'HS92' AELP map. Some of the effects we observed could be accounted for by the action of known genes such as the cer series, which occur on all chromosomes (Sogaard & von Wettstein-Knowles, 1987), as levels of epidermal wax are modified by salt stress. Genes on chromosome 4 are also important as this is where a number of relevant functions have been located; salt tolerance (Eorster et al, 1990), Na/K discrimination (Gorham et al, 1987).…”

Section: Regression Analysis and Chromosome Mapping Of Salt Stress Efmentioning

confidence: 93%

Mapping physiological traits in barley

Ellis¹,

Forster²,

Waugh³

et al. 1997

New Phytologist

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SUMMARYAmplified fragment length polymorphisms (AFLPs) offer a reproducible, multiplex DNA assay by which to genotype mapping populations. We have evaluated physiological traits in barley seedlings grown in an hydroponic system and given a salt treatment. Multiple regression was used to show associations between AFLPs and quantitative traits. Effects at different loci were detected in stress treatments in comparison to the control implying that either novel gene action was induced by salt stress or that normal activity was reduced to a low level where alternate gene action is revealed. The QTLs occurred on all chromosomes but there appeared to be clusters of loci on chromosomes 1 (7H), 4 (4H), 5 (lH) and 6 (6H). The significance of our results is discussed in the context of studies to explore the barley genome and the application of the results of these genetical analyses to barley breeding.

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“…In contrast, the genes for protein Z and /?-amylase are almost completely switched off by the lys 3a mutation (Balasaraswathi et al 1984;Kreis et al 1987;S0rensen et al 1989). We report here the molecular cloning of the cDNA corresponding to trypsin inhibitor CMe and present evidence that gene CMe (synonym Itcl; see Sogaard and von Wettstein-Knowles 1987) is regulated in trans by the lys 3a locus.…”

Section: Introductionmentioning

confidence: 99%

The gene for trypsin inhibitor CMe is regulated in trans by the lys 3a locus in the endosperm of barley (Hordeum vulgare L.)

Rodrı́guez-Palenzuela¹,

Royo²,

Gómez³

et al. 1989

Mol Gen Genet

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Summary.A cDNA encoding trypsin inhibitor CMe from barley endosperm has been cloned and characterized. The longest open reading frame of the cloned cDNA codes for a typical signal peptide of 24 residues followed by a sequence which is identical to the known amino acid sequence of the inhibitor, except for an lie/Leu substitution at position 59. Southern blot analysis of wheat-barley addition lines has shown that chromosome 3H of barley carries the gene for CMe. This protein is present at less than 2%-3% of the wild-type amount in the mature endosperm of the mutant Ris0 1508 with respect to Bomi barley, from which it has been derived, and the corresponding steady state levéis of the CMe mRNA are about 1%. One or two copies of the CMe gene (synonym Itcl) per haploid genome have been estimated both in the wild type and in the mutant, and DNA restriction patterns are identical in both stocks, so neither a change in copy number ñor a major rearrangement of the structural gene account for the markedly decreased expression. The mutation at the lys 3a locus in Ris0 1508 has been previously mapped in chromosome 7 (synonym 5H). A single dose of the wild-type alíele at this locus (Lys 3a) restores the expression of gene CMe (alíele CMe-1) in chromosome 3H to normal levéis.

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Barley: Genes and chromosomes

Cited by 130 publications

References 265 publications

Quantitative trait loci controlling kernel discoloration in barley (Hordeum vulgare L.)

Quantitative trait loci controlling kernel discoloration in barley (Hordeum vulgare L.)

Mapping physiological traits in barley

The gene for trypsin inhibitor CMe is regulated in trans by the lys 3a locus in the endosperm of barley (Hordeum vulgare L.)

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