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Inheritance and mapping of QTLs for Ascochyta blight resistance in chickpea (Cicer arietinum)

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Title Inheritance and mapping of QTLs for Ascochyta blight resistance in chickpea (Cicer arietinum)
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Creator DIVYA LEKHI, AJINDER KAUR, UPASANA RANI, SANGEETA SOI, INDERJIT SINGH, SHAYLA BINDRA, ADITYA PRATAP, SARVJEET SINGH and C BHARADWAJ
 
Subject Ascochyta blight, Chickpea, Linkage, Molecular mapping, QTLs
 
Description Not Available
There are very limited studies on the QTLs governing Ascochyta blight resistance which is a major problem in
chickpea (Cicer arietinum L.) grown in North West Plain Zone of India in the cooler climates and world over. An
interspecific mapping population consisting of 157 F2:3 lines developed by crossing a resistant parent ILWC129 (C.
reticulatum) with a susceptible variety GL769 (C. arietinum L.), was evaluated (2019–20) and genotyped (2021) for
genetic studies and mapping of resistance to Ascochyta rabiei (syn. Phoma rabiei), isolate 8(3968). The inheritance
pattern gave 1R:2H:1S goodness of fit ratio with χ2 value of 0.4 indicating that resistance against isolate 8 of the
pathogen governed by a single gene. Out of 831 SSR markers screened, 86 were found polymorphic with 10.3%
polymorphism from which only 41 markers segregated in 1:2:1 ratio and could be mapped. Eight linkage groups with a
cumulative distance of 1042.31 cM were formed with an average distance of 25.42 cM. This is probably the first report
of inheritance studies and tagging of A. rabei race 8 (arr8) resistance gene using molecular markers in an interspecific
cross with C. reticulatum.
Not Available
 
Date 2024-05-03T10:02:15Z
2024-05-03T10:02:15Z
2022-04-04
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/82584
 
Language English
 
Relation Not Available;
 
Publisher ICAR