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Mapping Host Plant Resistance Qtls against Three Virulent Isolates of Downy Mildew PathogenIn Pearl Millet (Pennisetum glaucum [L.] R. Br.)

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Relation http://oar.icrisat.org/10458/
http://www.ijpab.com/vol5-iss5.php
10.18782/2320-7051.5736
 
Title Mapping Host Plant Resistance Qtls against Three Virulent Isolates of Downy Mildew PathogenIn Pearl Millet (Pennisetum glaucum [L.] R. Br.)
 
Creator Saritha, A
Srivastava, R K
Reddy, N
Katiyar, P
Dangi, K S
 
Subject Pearl Millet
Genetics and Genomics
Plant Pathology
 
Description Downy mildew (DM) epidemics have repeatedly caused huge grain and straw production losses
on pearl millet single-cross hybrids in India. The present study was undertaken to identify the
QTL positions controlling DMR on the linkage map for a pearl millet mapping population of 295
F7 RIL population derived from a single F1 plant from plant × plant cross 81 B-P13
(susceptible) × AIMP 92901-P03 (resistant) using three isolates of the pathogen from Gujarat,
Haryana and Rajasthan. A skeleton genetic linkage map of 536.8 cM (Haldane) was constructed
using MapMaker/Exp version 3.0b at LOD threshold value of 3.0 using 39 scorable polymorphic
loci. A total of four major DMR QTLs were identified on linkage groups of 1,3 and 4. The
inheritance of of these QTLs showed AIMP 92901-P03 providing the resistant alleles. At least
one DMR QTL was detected and mapped for each of the three DM isolates. After validation,
marker-assisted selection (MAS) can now be used for improving DMR of elite pearl millet hybrid
parental lines using polymorphic flanking markers from donor parent AIMP 92901-P03.
 
Publisher Vital Biotech, India
 
Date 2017
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/10458/1/Mapping%20Host%20Plant%20Resistance%20Qtls.pdf
Saritha, A and Srivastava, R K and Reddy, N and Katiyar, P and Dangi, K S (2017) Mapping Host Plant Resistance Qtls against Three Virulent Isolates of Downy Mildew PathogenIn Pearl Millet (Pennisetum glaucum [L.] R. Br.). International Journal of Pure & Applied Bioscience, 5 (5). pp. 1625-1631. ISSN 2320 – 7051