scholarly journals Molecular mapping of quantitative trait loci for ascochyta blight and botrytis grey mould resistance in an inter-specific cross in chickpea (Cicer arietinum L.) using genotyping by sequencing

2021 ◽  
Author(s):  
Ashutosh Kushwah ◽  
Dharminder Bhatia ◽  
Upasana Rani ◽  
Inderjit Singh Yadav ◽  
Inderjit Singh ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Cicer Arietinum ◽  
Quantitative Trait ◽  
Molecular Mapping ◽  
Ascochyta Blight ◽  
Genotyping By Sequencing ◽  
Grey Mould ◽  
Trait Loci

scholarly journals Lens orientalis Contributes Quantitative Trait Loci and Candidate Genes Associated With Ascochyta Blight Resistance in Lentil

2021 ◽  
Vol 12 ◽  
Author(s):  
Rama Harinath Reddy Dadu ◽  
Ido Bar ◽  
Rebecca Ford ◽  
Prabhakaran Sambasivam ◽  
Janine Croser ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Candidate Genes ◽  
Quantitative Trait ◽  
Mapping Population ◽  
Ascochyta Blight ◽  
Genotyping By Sequencing ◽  
Defense Responses ◽  
Phenotypic Variance ◽  
Genetic Dissection ◽  
Trait Loci

Australian lentil production is affected by several major biotic constraints including Ascochyta blight (AB), caused by Ascochyta lentis, a devastating fungal disease. Cultivation of AB resistant cultivars, alongside agronomic management including fungicide application, is the current most economically viable control strategy. However, the breakdown of AB resistance in cultivars, such as Northfield and Nipper, suggests the need for introgression of new and diverse resistance genes. Successful introgression entails an understanding of the genetic basis of resistance. In this context, a biparental mapping population derived from a cross between a recently identified AB resistant accession ILWL 180 (Lens orientalis) and a susceptible cultivar ILL 6002 was produced. A genetic linkage map was constructed from single-nucleotide polymorphism markers generated using a genotyping-by-sequencing transcript approach. Genetic dissection of the mapping population revealed a major quantitative trait loci (QTL) region nested with three QTLs on linkage group 5 and explained 9.5–11.5 percent (%) of phenotypic variance for AB resistance. Another QTL was identified on LG2 with phenotypic variance of 9.6%. The identified QTL regions harbored putative candidate genes potentially associated with defense responses to A. lentis infection. The QTL analysis and the candidate gene information are expected to contribute to the development of diagnostic markers and enable marker-assisted resistance selection in lentil breeding programmes.

scholarly journals Wheat genetic resources – how to exploit?

2011 ◽  
Vol 47 (Special Issue) ◽  
pp. S43-S48 ◽  
Author(s):  
A. Börner ◽  
K. Neumann ◽  
B. Kobiljski
Keyword(s):  
Quantitative Trait Loci ◽  
Genetic Resources ◽  
Quantitative Trait ◽  
Molecular Mapping ◽  
Agronomic Traits ◽  
Wide Spectrum ◽  
Plant Genetic Resources ◽  
Germplasm Collections ◽  
Food And Agriculture ◽  
Trait Loci

It is estimated that world-wide existing germplasm collections contain about 7.5 million accessions of plant genetic resources for food and agriculture. Wheat (Triticum and Aegilops) represents the biggest group comprising 900 000 accessions. However, such a huge number of accessions is hindering a successful exploitation of the germplasm. The creation of core collections representing a wide spectrum of the genetic variation of the whole assembly may help to overcome the problem. Here we demonstrate the successful utilisation of such a core collection for the identification and molecular mapping of genes (Quantitative Trait Loci) determining the agronomic traits flowering time and grain yield, exploiting a marker-trait-association based technique. Significant marker-trait associations were obtained and are presented. The intrachromosomal location of many of these associations coincided with those of already identified major genes or quantitative trait loci, but others were detected in regions where no known genes have been located to date.

scholarly journals Molecular mapping of quantitative trait loci for agronomical traits in soybean under Asian soybean rust infection

2018 ◽  
Vol 18 (4) ◽  
pp. 390-398 ◽  
Author(s):  
João Vitor Maldonado dos Santos ◽  
Naoki Yamanaka ◽  
Francismar Corrêa Marcelino-Guimarães ◽  
José Francisco Ferraz de Toledo ◽  
Carlos Alberto Arrabal Arias ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Molecular Mapping ◽  
Soybean Rust ◽  
Rust Infection ◽  
Asian Soybean Rust ◽  
Trait Loci ◽  
Agronomical Traits

Molecular mapping of quantitative trait loci for yield and yield components in spring wheat (Triticum aestivum L.)

2008 ◽  
Vol 117 (4) ◽  
pp. 595-608 ◽  
Author(s):  
Janice L. Cuthbert ◽  
Daryl J. Somers ◽  
Anita L. Brûlé-Babel ◽  
P. Douglas Brown ◽  
Gary H. Crow
Keyword(s):  
Triticum Aestivum ◽  
Quantitative Trait Loci ◽  
Spring Wheat ◽  
Quantitative Trait ◽  
Yield Components ◽  
Molecular Mapping ◽  
Triticum Aestivum L ◽  
Yield And Yield Components ◽  
Trait Loci

scholarly journals Genotyping-by-sequencing markers facilitate the identification of quantitative trait loci controlling resistance to Penicillium expansum in Malus sieversii

PLoS ONE ◽  
2017 ◽  
Vol 12 (3) ◽  
pp. e0172949 ◽  
Author(s):  
John L. Norelli ◽  
Michael Wisniewski ◽  
Gennaro Fazio ◽  
Erik Burchard ◽  
Benjamin Gutierrez ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Genotyping By Sequencing ◽  
Penicillium Expansum ◽  
Malus Sieversii ◽  
Trait Loci
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