Identification of QTLs for resistance to Fusarium wilt and Ascochyta blight in a recombinant inbred population of chickpea (Cicer arietinum L.)
Publication Overview
Abstract Fusarium wilt (FW; caused by Fusarium
oxysporum f. sp. ciceris) and Ascochyta blight (AB;
caused by Ascochyta rabiei) are two major biotic
stresses that cause significant yield losses in chickpea
(Cicer arietinum L.). In order to identify the genomic
regions responsible for resistance to FW and AB, 188
recombinant inbred lines derived from a cross JG
62 x ICCV 05530 were phenotyped for reaction to
FW and AB under both controlled environment and
field conditions. Significant variation in response to
FW and AB was detected at all the locations. A genetic
map comprising of 111 markers including 84 simple
sequence repeats and 27 single nucleotide polymorphism
(SNP) loci spanning 261.60 cM was constructed.
Five quantitative trait loci (QTLs) were
detected for resistance to FW with phenotypic
variance explained from 6.63 to 31.55%. Of the five
QTLs, three QTLs including a major QTL on CaLG02
and a minor QTL each on CaLG04 and CaLG06 were
identified for resistance to race 1 of FW. For race 3, a
major QTL each on CaLG02 and CaLG04 were
identified. In the case of AB, one QTL for seedling
resistance (SR) against ‘Hisar race’ and a minor QTL
each for SR and adult plant resistance against isolate 8
of race 6 (3968) were identified. The QTLs and linked
markers identified in this study can be utilized for
enhancing the FW and AB resistance in elite cultivars
using marker-assisted backcrossing.
Features
This publication contains information about 8 features:
Projects
This publication contains information about 1 projects:
Featuremaps
This publication contains information about 1 maps:
Stocks
This publication contains information about 2 stocks:
Properties
Additional
details for this publication include:
|