Assignment of the <i>denso</i> Dwarfing Gene to the Long Arm of Chromosome 3(3H) of Barley by Use of RFLP Markers

Laurie, D. A.; Pratchett, N.; Romero, C.; Simpson, Elizabeth; Snape, J. W.

doi:10.1111/j.1439-0523.1993.tb00630.x

Cited by 57 publications

(38 citation statements)

References 9 publications

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“…In the MQM method, background markers are selected to take over the role of the putative QTLs as cofactors so as to reduce the residual genetic variance. First, the denso locus was deliberately chosen as a cofactor for all traits because of its importance for many traits (Powell et al 1985, Thomas et al 1991, Laurie et al 1993, Bezant et al 1997, Yin et al 1999. Second, other markers closest to the indicated region of possible QTL (LOD ‡ 2.5) were added as cofactors one after the other, until no further quantitative trait locus was indicated.…”

Section: Methodsmentioning

confidence: 99%

Use of component analysis in QTL mapping of complex crop traits: a case study on yield in barley

Yin

Chasalow²,

Stam

et al. 2002

Plant Breeding

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Genes contributing to the quantitative variation of a complex crop trait can be numerous. However, using existing approaches, the number of quantitative trait loci (QTL) detected for a trait is limited. Therefore, rather than looking for QTL for a complex trait itself, determining QTL for underlying component traits might give more information. In this study the potential of component analysis in QTL mapping of complex traits was examined using grain yield in spring barley as an example. Grain yield was divided into three components: number of spikes/m 2 , number of kernels/spike, and 1000-kernel weight. These traits were measured for individuals of a recombinant inbred-line population in field trials conducted over 2 years. By the use of an approximate multiple QTL model, one to eight QTL were detected for each trait in a year. Some QTL were mapped to similar positions in both years. Almost all QTL for yield were found at the position of or in close proximity to QTL for its component traits. A number of QTL for component traits were not detected when yield itself was subjected to QTL analysis. However, relative to the QTL for yield itself, all component-trait QTL did not explain the variation in yield better. The results in relation to the potential of using component analysis in studying complex crop traits are discussed.

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Section: Methodsmentioning

confidence: 99%

Use of component analysis in QTL mapping of complex crop traits: a case study on yield in barley

Yin

Chasalow²,

Stam

et al. 2002

Plant Breeding

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“…In barley these traits are often found to be highly heritable and correlated, suggesting that they are controlled by relatively few genes which are easy to identify and map genetically, e.g. Barua et al (1993) and Laurie et a!. (1993).…”

Section: Introductionmentioning

confidence: 99%

“…Recently RFLPs have been used to locate several major genes controlling plant height and ear emergence time in barley and related species. The denso dwarfing gene, present in many spring barley varieties in Europe, has been mapped to the long arm of chromosome 3(3H) (Barua et a!., 1993;Laurie et a!., 1993). Genes controlling photoperiod and vernalization response have been mapped in barley (Hackett et a!., 1992;Pan et at., 1994;Laurie et at., 1995), wheat (Galiba et a!., 1995;Worland, 1995) and rye (Plaschke et a!., 1993 …”

Section: Introductionmentioning

confidence: 99%

Marker regression mapping of QTL controlling flowering time and plant height in a spring barley (Hordeum vulgare L.) cross

et al. 1996

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An RFLP map was constructed from 99 doubled haploid lines of a cross between two spring barley varieties (Blenheim x Kym) and used to map quantative trait loci (QTL) controlling ear emergence time and plant height using a marker-regression approach. Three QTL affecting plant height were identified. The largest effect was from the denso dwarfing gene, present in Blenheim, on chromosome 3(3H)L. Two other effects were found, one on 7(5H)L and one on 1(7H)L. The denso gene also had a major effect on ear emergence time. However, eight additional QTL for ear emergence were also identified. Two of these were in regions previously identified as carrying the S/i and Sh2 vernalization response genes, suggesting that allelic variation at these genes may affect ear emergence time in spring barley crosses. Comparisons with maps of related species show conservation and collinearity of markers and genes.

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“…The sdw1/denso (semidwarf) gene encodes for GA-20 oxidase and it is one of the most studied genes in barley (Franckowiak and Pecio, 1992;Barua et al, 1993;Sasaki et al, 2002;Spielmeyer et al, 2002). It has been mapped to chromosome 3H (Barua et al, 1993;Laurie et al, 1993) and in a recent study it has been sequenced and applied as a diagnostic marker for selection of semidwarf gene in barley (Jia et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

A new genetic linkage map of barley (Hordeum vulgare L.) facilitates genetic dissection of height and spike length and angle

Islamovic¹,

Obert²,

Oliver

et al. 2013

Field Crops Research

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a b s t r a c tPlant height and spike length and angle are important agronomic traits in the production of barley (Hordeum vulgare L.) due to strong correlations with lodging and disease. The objective of this study was to use QTL analysis to identify genetic regions associated with each trait in a recombinant inbred line (RIL) mapping population derived from a cross of Falcon by Azhul. Falcon is a spring six-row hulless feed barley with long spikes displaying obtuse angles, while Azhul is a spring dwarf, six-row hulless food barley with short spikes displaying acute angles. The population was genotyped using SNP, DArT and SSR markers and quantitative trait loci (QTL) were detected on chromosomes 2H (102.8 cM, spike length), 3H (89.2 cM, plant height and 38.2, spike angle and length), 4H (19.0 cM, spike length), and 5H (106.7 cM, spike angle). In conclusion, we developed a barley genetic map, which incorporated SNP, DArT and SSR markers, for detection of height and spike length and angle QTL. Three spike angle, one spike length and one plant height QTL were novel and by using comparative genomics we identified possible candidate genes involved in gibberellic acid signaling and auxin-and ethylene-responsive pathways. This knowledge can be used to generate suitable markers for barley breeding improvement. Published by Elsevier B.V.

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Assignment of the denso Dwarfing Gene to the Long Arm of Chromosome 3(3H) of Barley by Use of RFLP Markers

Cited by 57 publications

References 9 publications

Use of component analysis in QTL mapping of complex crop traits: a case study on yield in barley

Use of component analysis in QTL mapping of complex crop traits: a case study on yield in barley

Marker regression mapping of QTL controlling flowering time and plant height in a spring barley (Hordeum vulgare L.) cross

A new genetic linkage map of barley (Hordeum vulgare L.) facilitates genetic dissection of height and spike length and angle

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