Identification of major consensus and epistatic QTLs for late leaf spot resistance in a cultivated groundnut breeding line VG 9514

Euphytica ◽  
2021 ◽  
Vol 217 (9) ◽  
Author(s):  
Suvendu Mondal ◽  
Babu N. Motagi ◽  
Anand M. Badigannavar
Keyword(s):  
Leaf Spot ◽  
Breeding Line ◽  
Epistatic Qtls ◽  
Late Leaf Spot ◽  
Late Leaf Spot Resistance

scholarly journals Mapping Revealed Two Additive QTLs and Fourteen Epistatic QTLs for Late Leaf Spot Resistance in a Cultivated Groundnut Breeding Line VG 9514.

2021 ◽  
Author(s):  
Suvendu Mondal ◽  
Babu N. Motagi ◽  
Anand M. Badigannavar
Keyword(s):  
Linkage Map ◽  
Leaf Spot ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
Breeding Line ◽  
Epistatic Qtls ◽  
Common Component ◽  
Late Leaf Spot ◽  
Late Leaf Spot Resistance ◽  
Additive Qtls

Abstract A late leaf spot resistant breeding line VG 9514 was bred through interspecific hybridization between Arachis hypogaea L. and Arachis cardenasii. Genetic study involving segregation for late leaf spot resistance in F2 and recombinant inbred line population of a cross between VG 9514 X TAG 24 revealed duplicate recessive resistance for the disease. Integration of newly developed SSR markers from A02 chromosome with existing linkage map generated a new genetic linkage map with 278 markers and 2679.1 cM map distances. QTL mapping involving this genetic linkage map and phenotypic field score of late leaf spot identified two major consensus additive QTLs in the A02 chromosome of cultivated groundnut. Epistatic interaction between these two major QTLs was also noticed through an epistatic QTL analysis in Ici-Mapping 4.1. In all the fourteen epistatic QTLs, a common component locus was remained within the major additive QTL at 90 cM in chromosome A02. Sequence analysis within the major additive QTL peaks revealed open reading frame of genes that code LRR domain containing proteins which are involved in disease resistance in crop plants.

scholarly journals Identification of novel QTLs for late leaf spot resistance and validation of a major rust QTL in peanut (Arachis hypogaea L.)

3 Biotech ◽  
2020 ◽  
Vol 10 (10) ◽  
Author(s):  
Suhail Ahmad ◽  
Bhagwat Nawade ◽  
Chandramohan Sangh ◽  
Gyan P. Mishra ◽  
Tejas C. Bosamia ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Leaf Spot ◽  
Late Leaf Spot ◽  
Arachis Hypogaea L ◽  
Late Leaf Spot Resistance

scholarly journals Mapping Late Leaf Spot Resistance in Peanut (Arachis hypogaea) Using QTL-seq Reveals Markers for Marker-Assisted Selection

2018 ◽  
Vol 9 ◽  
Author(s):  
Josh Clevenger ◽  
Ye Chu ◽  
Carolina Chavarro ◽  
Stephanie Botton ◽  
Albert Culbreath ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Leaf Spot ◽  
Marker Assisted Selection ◽  
Late Leaf Spot ◽  
Late Leaf Spot Resistance

Characterization of peanut lines with interspecific introgressions conferring late leaf spot resistance

Crop Science ◽  
2020 ◽  
Author(s):  
Samuele Lamon ◽  
Ye Chu ◽  
Larissa A. Guimaraes ◽  
David J. Bertioli ◽  
Soraya C. M. Leal‐Bertioli ◽  
...  
Keyword(s):  
Leaf Spot ◽  
Late Leaf Spot ◽  
Late Leaf Spot Resistance

scholarly journals Characterization of rust, early and late leaf spot resistance in wild and cultivated peanut germplasm

2009 ◽  
Vol 66 (1) ◽  
pp. 110-117 ◽  
Author(s):  
Alessandra Pereira Fávero ◽  
Sérgio Almeida de Moraes ◽  
Antonio Augusto Franco Garcia ◽  
José Francisco Montenegro Valls ◽  
Natal Antonio Vello
Keyword(s):  
Wild Species ◽  
Leaf Spot ◽  
Fungal Diseases ◽  
Cercospora Arachidicola ◽  
Cercosporidium Personatum ◽  
Late Leaf Spot ◽  
Pests And Diseases ◽  
Puccinia Arachidis ◽  
Oil Crops ◽  
Late Leaf Spot Resistance

Groundnut (Arachis hypogaea) has an AB genome and is one of the most important oil crops in the world. The main constraints of crop management in Brazil are fungal diseases. Several species of the genus Arachis are resistant to pests and diseases. The objective of our experiments was to identify wild species belonging to the taxonomic section Arachis with either A or B (or " non-A" ) genomes that are resistant to early leaf spot (Cercospora arachidicola), late leaf spot (Cercosporidium personatum) and rust (Puccinia arachidis). For the identification of genotypes resistant to fungal diseases, bioassays with detached leaves were done in laboratory conditions, with artificial inoculation, a controlled temperature of 25ºC and a photoperiod of 10 h light/14 h dark, for 20-42 days, depending on the fungi species. Most of the accessions of wild species were more resistant than accessions of A. hypogaea for one, two or all three fungi species studied. Arachis monticola, considered to be a possible tetraploid ancestor or a derivative of A. hypogaea, was also more susceptible to Cercosporidium personatum and Puccinia arachidis, as compared to most of the wild species. Therefore, wild germplasm accessions of both genome types are available to be used for the introgression of resistance genes against three fungal diseases of peanut.

scholarly journals Variability and Trait Association Studies for Late Leaf Spot Resistance in a Groundnut MAGIC Population

Agronomy ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2193
Author(s):  
Ankush Purushottam Wankhade ◽  
Sai Rekha Kadirimangalam ◽  
Kannalli Paramashivaiah Viswanatha ◽  
Milind Panjabrao Deshmukh ◽  
Vivek Shivajirao Shinde ◽  
...  
Keyword(s):  
Leaf Spot ◽  
Association Studies ◽  
Multiple Traits ◽  
Resistant Parent ◽  
Late Leaf Spot ◽  
Detached Leaf ◽  
Minor Alleles ◽  
Component Traits ◽  
Late Leaf Spot Resistance ◽  
Advanced Generation

Globally, late leaf spot (LLS), a foliar fungal disease is one of the most important biotic constraint in groundnut production. Multi-Parent Advanced Generation Inter Cross (MAGIC) groundnut population was developed in a convergent crossing scheme using eight founder parents to develop a mapping population for multiple traits includes LLS. The experiments conducted in light chamber using detached leaf assay, and disease field screening nurseries at two locations (ICRISAT and ARS, Kasbe Digraj) showed significant variability for LLS resistance and component of resistance traits. Total 10 MAGIC lines with longer incubation (>11.0 days) and two MAGIC lines with longer latent period (>27 days) than the resistant parent, GPBD 4 were identified. The MAGIC lines, ICGR 171413, and ICGR 171443 with a lesion diameter of <1 mm and 4.10–5.67% of leaf area damage can be valuable sources for the alleles limiting the pathogen severity. A total of 20 MAGIC lines recorded significantly superior for disease score at 105 DAP_I (5.60–6.89) compared to resistant check, GPDB 4 (6.89). Further studies to determine the type and number of genes controlling the LLS component traits in groundnut will be useful for improvement of resistance to LLS. Genomic selection approach can be valuable in groundnut breeding to harness the minor alleles contributing to the component traits of LLS resistance.

scholarly journals QTL-seq approach identified genomic regions and diagnostic markers for rust and late leaf spot resistance in groundnut (Arachis hypogaea L.)

2017 ◽  
Vol 15 (8) ◽  
pp. 927-941 ◽  
Author(s):  
Manish K. Pandey ◽  
Aamir W. Khan ◽  
Vikas K. Singh ◽  
Manish K. Vishwakarma ◽  
Yaduru Shasidhar ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Leaf Spot ◽  
Diagnostic Markers ◽  
Late Leaf Spot ◽  
Arachis Hypogaea L ◽  
Late Leaf Spot Resistance ◽  
Genomic Regions

scholarly journals Correction to: Identification of novel QTLs for late leaf spot resistance and validation of a major rust QTL in peanut (Arachis hypogaea L.)

3 Biotech ◽  
2020 ◽  
Vol 10 (12) ◽  
Author(s):  
Suhail Ahmad ◽  
Bhagwat Nawade ◽  
Chandramohan Sangh ◽  
Gyan P. Mishra ◽  
Tejas C. Bosamia ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Leaf Spot ◽  
Late Leaf Spot ◽  
Arachis Hypogaea L ◽  
Late Leaf Spot Resistance
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