Development and QTL assessment of Triticum aestivum–Aegilops tauschii introgression lines

Pestsova, Elena; Börner, Andreas; Röder, Marion S.

doi:10.1007/s00122-005-0166-1

Cited by 79 publications

(64 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Genetic assessments of plant height in wheat were carried out in many studies (Cadalen et al 1998;Korzun et al 1998;Peng et al 2003;Schnurbusch et al 2003;McCartney et al 2005;Pestsova et al 2006;Quarrie et al 2006;Wang et al 2010;Wu et al 2010), but most of the data were collected only at or near maturity. The combination of developmental quantitative genetics with molecular markers make it possible to analyze the developmental behavior of important agronomic traits (Price and Tomos 1997;Yan et al 1998aYan et al , 1998bYan et al , 2003Levesque et al 2006;Wang et al 2010;Wu et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Association mapping of dynamic developmental plant height in common wheat

Zhang

Hao

Ren

et al. 2011

Planta

View full text Add to dashboard Cite

Drought as a major abiotic stress often occurs from stem elongation to the grain filling stage of wheat in northern China. Plant height (PH) is a suitable trait to model the dissection of drought tolerance. The purposes of the present study were to validate molecular markers for PH developmental behavior and identify elite alleles of molecular markers. After the phenotyping of 154 accessions for PH dynamic development under well-watered (WW) and drought stressed (DS) conditions, and the genotyping of 60 SSR markers from six candidate chromosome regions related to PH found in our previous linkage mapping studies, both parameters PH and drought tolerance coefficient (DTC) calculated by the conditional analysis were used for association mapping. A total of 46 significant association signals (P < 0.01) were identified in 23 markers, and phenotypic variation ranged from 7 to 50%. Among them, four markers Xgwm261-2D, Xgwm495-4B, Xbarc109-4B and Xcfd23-4D were detected under both water regimes. Furthermore, 10 markers were associated with DTC, and four with both parameters PH and DTC at the same plant development stage. The results revealed different allelic effects of associated markers; for example, the 155 bp Xgwm495-4B allele was associated with a reduced height of -11.2 cm under DS and -15.3 cm under WW, whereas the 167 bp allele exhibited increased height effects of 3.9 and 8.1 cm, respectively. This study demonstrates a strong power of joint association analysis and linkage mapping for the identification of important genes in wheat.

show abstract

Section: Introductionmentioning

confidence: 99%

Association mapping of dynamic developmental plant height in common wheat

Zhang

Hao

Ren

et al. 2011

Planta

View full text Add to dashboard Cite

show abstract

“…First IL sets in plants were developed for tomato (Eshed et al 1992;Eshed and Zamir 1994;Fulton et al 1997) and rice (Jena et al 1992;Aida et al 1997). In recent years, complete or nearly complete IL sets were developed for further tomato (Monforte and Tanksley 2000; Canady et al 2005;Finkers et al 2007) and rice wild species Tian et al 2006a;Tan et al 2007), as well as Arabidopsis thaliana (Keurentjes et al 2007), the D-genome of wheat (Pestsova et al 2006), maize (Szalma et al 2007), and melon (Eduardo et al 2005). Also in other crop species, lines containing introgressed segments from wild species (e.g., near-isogenic lines, recombinant, or backcross inbred lines) were generated and used for genetic studies.…”

Section: Introductionmentioning

confidence: 99%

“…For yield-related traits, several QTL studies were also conducted in rice (e.g. Mei et al 2006;Tan et al 2007) and wheat (Liu et al 2006;Pestsova et al 2006). As it was reported by several publications, ILs were also applied to the analysis of quality parameters like amount of antioxidants in tomato fruits (Rousseaux et al 2005); milling quality of rice grains (Zheng et al 2007), amount of high molecular weight glutenin subunits in wheat grains ) and postharvest decay and quality of melon fruits Fernandez-Trujillo et al 2007;Obando et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Selecting a set of wild barley introgression lines and verification of QTL effects for resistance to powdery mildew and leaf rust

2008

View full text Add to dashboard Cite

A set of 59 spring barley introgression lines (ILs) was developed from the advanced backcross population S42. The ILs were generated by three rounds of backcrossing, two to four subsequent selfings, and, in parallel, marker-assisted selection. Each line includes a single marker-defined chromosomal segment of the wild barley accession ISR42-8 (Hordeum vulgare ssp. spontaneum), whereas the remaining part of the genome is derived from the elite barley cultivar Scarlett (H. vulgare ssp. vulgare). Based on a map containing 98 SSR markers, the IL set covers so far 86.6% (1041.5 cM) of the donor genome. Each single line contains an average exotic introgression of 39.2 cM, representing 3.2% of the exotic genome. The utility of the developed IL set is illustrated by verification of QTLs controlling resistance to powdery mildew (Blumeria graminis f. sp. hordei L.) and leaf rust (Puccinia hordei L.) which were previously identified in the advanced backcross population S42. Altogether 57.1 and 75.0% of QTLs conferring resistance to powdery mildew and leaf rust, respectively, were verified by ILs. The strongest favorable effects were mapped to regions 1H, 0-85 cM and 4H, 125-170 cM, where susceptibility to powdery mildew and leaf rust was decreased by 66.1 and 34.7%, respectively, compared to the recurrent parent. In addition, three and one new QTLs were localized, respectively. A co-localization of two favorable QTLs was identified for line S42IL-138, which holds an introgressed segment in region 7H, 166-181. Here, a reduction effect was revealed for powdery mildew as well as for leaf rust severity. This line might be a valuable resource for transferring new resistance alleles into elite cultivars. In future, we aim to cover the complete exotic genome by selecting additional ILs. We intend to conduct further phenotype studies with the IL set in regard to the trait complexes agronomic performance, malting quality, biotic stress, and abiotic stress.

show abstract

“…Crops that are nationally as well as globally important to food Wiersema et al (2012) and the "Harlan and de Wet crop Wild Relative inventory" (Vincent et al, 2012). Aegilops cylindrica Host Salt tolerance (Farooq et al, 1995;Wang et al, 2003 Rust resistance (cox et al, 1995), wheat soil-borne mosaic virus, wheat spindle-streak mosaic virus (cox et al, 1995), drought tolerance (Gororo et al, 2002), yellow rust and leaf rust resistance (Ma et al, 1995), glutenins improvement (Pena et al, 1995), agronomic traits, yield improvement (Pestsova et al, 2006), hessian fly resistance (Suszkiw, 2005), karnal bunt (Villareal et al, 1996), water-logging tolerance (Villareal et al, 2001), and sprouting suppression (Xiu-Jin et al, 1997). Allium fistulosum L.…”

Section: Priority Crop Wild Relatives Of Agricultural Cropsmentioning

confidence: 99%

An Inventory of Crop Wild Relatives of the United States

et al. 2013

View full text Add to dashboard Cite

The use of crop wild relatives (CWRs) in breeding is likely to continue to intensify as utilization techniques improve and crop adaptation to climate change becomes more pressing. Significant gaps remain in the conservation of these genetic resources. As a first step toward a national strategy for the conservation of CWRs, we present an inventory of taxa occurring in the United States, with suggested prioritization of species based on potential value in crop improvement. We listed 4600 taxa from 985 genera and 194 plant families, including CWRs of potential value via breeding as well as wild species of direct use for food, forage, medicine, herb, ornamental, and/or environmental restoration purposes. United States CWRs are related to a broad range of important food, forage and feed, medicinal, ornamental, and industrial crops. Some potentially valuable species are threatened in the wild, including relatives of sunflower (Helianthus annuus L.), walnut (Juglans regia L.), pepo squash (Cucurbita pepo L.), wild rice (Zizania L.), raspberry (Rubus idaeus L.), and plum (Prunus salicina Lindl.), and few accessions of such taxa are currently conserved ex situ. We prioritize 821 taxa from 69 genera primarily related to major food crops, particularly the approximately 285 native taxa from 30 genera that are most closely related to such crops. Both the urgent collection for ex situ conservation and the management of such taxa in protected areas are warranted, necessitating partnerships between concerned organizations, aligned with regional and global initiatives to conserve and provide access to CWR diversity.

show abstract

Development and QTL assessment of Triticum aestivum–Aegilops tauschii introgression lines

Cited by 79 publications

References 47 publications

Association mapping of dynamic developmental plant height in common wheat

Association mapping of dynamic developmental plant height in common wheat

Selecting a set of wild barley introgression lines and verification of QTL effects for resistance to powdery mildew and leaf rust

An Inventory of Crop Wild Relatives of the United States

Contact Info

Product

Resources

About