Genetics of resistance to ascochyta blight in chickpea (Cicer arietinum L.)

Tewari, Salil; Pandey, M. P.

doi:10.1007/bf00028559

Cited by 42 publications

(35 citation statements)

References 3 publications

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“…To date, the pathogen has been classified mainly into two broad pathotypes: pathotype I (less aggressive) and pathotype II (aggressive) ; but further research is required to identify the genes that control aggressiveness. As for the host, early studies on the inheritance of blight resistance indicated that it could be conferred by one, two or three genes (Singh and Reddy 1983;Tewari and Pandey 1986;Dey and Singh 1993;Tekeoglu et al 2000). Furthermore, evidence that resistance might be inherited as a quantitative trait has been reported (Muehlbauer and Kaiser, 1994).…”

Section: ó Knpv 2007mentioning

confidence: 97%

Validation of a QTL for resistance to ascochyta blight linked to resistance to fusarium wilt race 5 in chickpea (Cicer arietinum L.)

et al. 2007

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Ascochyta blight caused by Ascochyta rabiei and fusarium wilt caused by Fusarium oxysporum. f. sp. ciceris are the two most serious diseases of chickpea (Cicer arietinum). Quantitative trait loci (QTL) or genes for ascochyta blight resistance and a cluster of resistance genes for several fusarium wilt races (foc1, foc3, foc4 and foc5) located on LG2 of the chickpea map have been reported independently. In order to validate these results and study the linkage relationship between the loci that confer resistance to blight and wilt, an intraspecific chickpea recombinant inbred lines (RIL) population that segregates for resistance to both diseases was studied. A new LG2 was established using sequence tagged microsatellite sites (STMS) markers selected from other chickpea maps. Resistance to race 5 of F. oxysporum (foc5) was inherited as a single gene and mapped to LG2, flanked by the STMS markers TA110 (6.5 cM apart) and TA59 (8.9 cM apart). A QTL for resistance to ascochyta blight (QTL AR3 ) was also detected on LG2 using evaluation data obtained separately in two cropping seasons. This genomic region, where QTL AR3 is located, was highly saturated with STMS markers. STMS TA194 appeared tightly linked to QTL AR3 and was flanked by the STMS markers TR58 and TS82 (6.5 cM apart). The genetic distance between foc5 and QTL AR3 peak was around 24 cM including six markers within this interval. The markers linked to both loci could facilitate the pyramiding of resistance genes for both diseases through MAS.

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Section: ó Knpv 2007mentioning

confidence: 97%

Validation of a QTL for resistance to ascochyta blight linked to resistance to fusarium wilt race 5 in chickpea (Cicer arietinum L.)

et al. 2007

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“…These studies showed that in some desi chickpeas, and in several kabuli chickpeas (ILC 72,ILC 183,ILC 200 and ILC 935), a single dominant gene controlled resistance (Vir et al 1975;Singh and Reddy 1983). In some other cultivars, it has been reported that resistance was governed by two dominant genes (Tewari and Pandey 1986), one recessive gene (Tewari and Pandey 1986), two recessive genes (Kusmenoglu 1990) or by two to three quantitative loci , depending on the screening techniques and the cultivar used.…”

Section: Introductionmentioning

confidence: 95%

Genetic dissection of pathotype-specific resistance to ascochyta blight disease in chickpea (Cicer arietinum L.) using microsatellite markers

2002

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Ascochyta blight is an economically important disease of chickpea caused by the fungus Ascochyta rabiei. The fungus shows considerable variation for pathogenicity in nature. However, studies on the genetics of pathotype-specific resistance are not available for this plant-pathosystem. The chickpea landrace ILC 3279 has resistance to pathotype I and II of the pathogen. In order to understand the inheritance of pathotype-specific resistance in this crop, both Mendelian and quantitative trait loci analyses were performed using a set of intraspecific, recombinant inbred lines derived from a cross between the susceptible accession ILC 1272 and the resistant ILC 3279, and microsatellite markers. We identified and mapped a major locus (ar1, mapped on linkage group 2), which confers resistance to pathotype I, and two independent recessive major loci (ar2a, mapped on linkage group 2 and ar2b, mapped on linkage group 4), with complementary gene action conferring resistance to pathotype II. Out of two pathotype II-specific resistance loci, one (ar2a) linked very closely with the pathotype I-specific resistance locus, indicating a clustering of resistance genes in that region of the chickpea genome.

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“…However, using an F 2 population from the same parental lines that were used by Ahmad et al (1952), Hafiz and Ashraf (1953) showed that blight resistance was conferred by one dominant gene. A dominant genetic mechanism for blight resistance had been supported by many reports (Vir et al 1975;Singh and Reddy 1983;Tewari and Pandey 1986) until Kusmenoglu et al (1990), using a population of F 2 -derived F 3 families, reported that blight resistance was conferred by two recessive genes acting additively. confirmed the recessive genetic nature of blight resistance, using three recombinant inbred line (RIL) populations that were derived from crosses of resistant and susceptible germplasm lines.…”

Section: Introductionmentioning

confidence: 97%

Pathotype-specific genetic factors in chickpea (Cicer arietinum L.) for quantitative resistance to ascochyta blight

2004

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Ascochyta blight in chickpea (Cicer arietinum L.) is a devastating fungal disease caused by the necrotrophic pathogen, Ascochyta rabiei (Pass.) Lab. To elucidate the genetic mechanism of pathotype-dependent blight resistance in chickpea, F 7 -derived recombinant inbred lines (RILs) from the intraspecific cross of PI 359075(1) (blight susceptible) × FLIP84-92C(2) (blight resistant) were inoculated with pathotypes I and II of A. rabiei. The pattern of blight resistance in the RIL population varied depending on the pathotype of A. rabiei. Using the same RIL population, an intraspecific genetic linkage map comprising 53 sequence-tagged microsatellite site markers was constructed. A quantitative trait locus (QTL) for resistance to pathotype II of A. rabiei and two QTLs for resistance to pathotype I were identified on linkage group (LG)4A and LG2+6, respectively. A putative single gene designated as Ar19 (or Ar21d) could explain the majority of quantitative resistance to pathotype I. Ar19 (or Ar21d) appeared to be required for resistance to both pathotypes of A. rabiei, and the additional QTL on LG4A conferred resistance to pathotype II of A. rabiei. Further molecular genetic approach is needed to identify individual qualitative blight resistance genes and their interaction for pathotype-dependent blight resistance in chickpea.

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Genetics of resistance to ascochyta blight in chickpea (Cicer arietinum L.)

Cited by 42 publications

References 3 publications

Validation of a QTL for resistance to ascochyta blight linked to resistance to fusarium wilt race 5 in chickpea (Cicer arietinum L.)

Validation of a QTL for resistance to ascochyta blight linked to resistance to fusarium wilt race 5 in chickpea (Cicer arietinum L.)

Genetic dissection of pathotype-specific resistance to ascochyta blight disease in chickpea (Cicer arietinum L.) using microsatellite markers

Pathotype-specific genetic factors in chickpea (Cicer arietinum L.) for quantitative resistance to ascochyta blight

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