Ascochyta Blight Resistance Inheritance in Three Chickpea Recombinant Inbred Line Populations

Tekeoglu, M.; Santra, Dipak K.; Kaiser, W. J.; Muehlbauer, F. J.

doi:10.2135/cropsci2000.4051251x

Cited by 98 publications

(72 citation statements)

References 19 publications

(20 reference statements)

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“…Novel sources of resistance are therefore sought from within the cultivated species, for the immediate improvement of current chickpea cultivars. Fortunately, various sources of resistance were identified within the cultivated gene pool, and have been used in several genetic and breeding studies (Reddy and Singh 1992;Singh 1997a;Galvez et al 2000;Meredith et al 2000;Santra et al 2000;Tekeoglu et al 2000).…”

Section: Introductionmentioning

confidence: 99%

QTL analysis for ascochyta blight resistance in an intraspecific population of chickpea (Cicer arietinum L.)

et al. 2003

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In both controlled environment and the field, six QTLs for ascochyta blight resistance were identified in three regions of the genome of an intraspecific population of chickpea using the IDS and AUDPC disease scoring systems. One QTL-region was detected from both environments, whereas the other two regions were detected from each environment. All the QTL-regions were significantly associated with ascochyta blight resistance using either of the disease scoring systems. The QTLs were verified by multiple interval mapping, and a two-QTL genetic model with considerable epistasis was established for both environments. The major QTLs generally showed additive gene action, as well as dominance inter-locus interaction in the multiple genetic model. All the QTLs were mapped near a RGA marker. The major QTLs were located on LG III, which was mapped with five different types of RGA markers. A CLRR-RGA marker and a STMS marker flanked QTL 6 for controlled environment resistance at 0.06 and 0.04 cM, respectively. Other STMS markers flanked QTL 1 for field resistance at a 5.6 cM interval. After validation, these flanking markers may be used in marker-assisted selection to breed for elite chickpea cultivars with durable resistance to ascochyta blight. The tight linkage of RGA markers to the major QTL on LG III will allow map-based cloning of the underlying resistance genes.

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Section: Introductionmentioning

confidence: 99%

QTL analysis for ascochyta blight resistance in an intraspecific population of chickpea (Cicer arietinum L.)

et al. 2003

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“…The combined effect of the two genetic systems should result in a durable resistance to anthracnose in lentil. Singh and Reddy (1989) and Tekeoglu et al (2000) also reported genetic resistance to ascochyta blight in chickpea caused by genes with minor effects, in addition to resistance due to a major gene. Other studies have reported a combination of a major gene plus several minor genes controlling resistance to southern corn rust (Holland et al 1998) and to the P3 isolate of phytophtora blight of pigeon pea (Gupta et al 1997).…”

Section: Resultsmentioning

confidence: 96%

Genetics of resistance to anthracnose and identification of AFLP and RAPD markers linked to the resistance gene in PI 320937 germplasm of lentil (Lens culinaris Medikus)

et al. 2003

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Anthracnose, caused by Colletotrichum truncatum, is a major disease problem and production constraint of lentil in North America. The research was conducted to examine the resistance to anthracnose in PI 320937 lentil and to identify molecular markers linked to the resistance gene in a recombinant inbred line (RIL) population developed from a cross of Eston lentil, the susceptible parent, and PI 320937, the resistant parent. A total of 147 F(5:6) RILs were evaluated for resistance to anthracnose in the greenhouse using isolate 95B36 of C. truncatum. Bulked segregant analysis (BSA) strategy was employed and two contrasting DNA bulks were constructed based on greenhouse inoculation of F(5)-derived F(6) RILs. DNA from the parents and bulks were screened with 700 RAPD primers and seven AFLP primer combinations. Analysis of segregation data indicated that a major dominant gene was responsible for resistance to anthracnose while variations in the resistance level among RILs could be the influences of minor genes. We designate the major gene as LCt-2. MapMaker analysis produced two flanking RAPD markers OPEO6(1250) and UBC-704(700) linked to LCt-2 locus in repulsion (6.4 cM) and in coupling (10.5 cM), respectively. Also, three AFLP markers, EMCTTACA(350) and EMCTTAGG(375) in coupling, and EMCTAAAG(175) in repulsion, were linked to the LCt-2 locus. These markers could be used to tag the LCt-2 locus and facilitate marker-assisted selection for resistance to anthracnose in segregating populations of lentil in which PI 320937 was used as the source of resistance. Also, a broader application of the linked RAPD markers was also demonstrated in Indianhead lentil, widely used as a source of resistance to anthracnose in the breeding program at the Crop Development Centre, University of Saskatchewan. Further selection within the few F(5:6) lines should be effective in pyramiding one or several of the minor genes into the working germplasm of lentil, resulting in a more durable and higher level of resistance.

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“…Ascochyta blight is an important constraint on chickpea production worldwide (Tekeoglu et al 2000). The pathogen population in western Canada is genetically heterogeneous Vail 2005), so reliance on a single gene resistance for disease management is unlikely to provide reliable long-term control.…”

Section: Discussionmentioning

confidence: 99%

Impact of cultivar, row spacing and seeding rate on ascochyta blight severity and yield of chickpea

Chang¹,

Ahmed²,

Hwang³

et al. 2007

Can. J. Plant Sci.

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Impact of cultivar, row spacing and seeding rate on ascochyta blight severity and yield of chickpea. Can. J. Plant Sci. 87: [395][396][397][398][399][400][401][402][403]. Field trials to assess the impact of chickpea type (desi vs. kabuli), row spacing and seeding rate on ascochyta blight of chickpea were conducted over 2 yr at Brooks, Alberta. A compound-leaved desi chickpea cultivar and unifoliate kabuli cultivar were sown at 20, 30 and 40 cm row spacing, and at three seeding rates (20, 40 and 60 seeds per 3 m row). Most of the variation in disease severity was associated with differences between the cultivars. Seeding rate, row spacing and their interactions had substantially smaller effects on ascochyta blight in comparison with cultivar effects. Late in the growing season, blight severity was consistently lower in the desi than the kabuli cultivar. Wide row spacing and low seeding rate reduced ascochyta blight severity and increased seed yield per plant. Wide row spacing in the first year reduced the seed yield per hectare, but row spacing did not significantly affect yield in 2005. Low in-row seeding rates increased yield only in 2004. There was a positive linear relationship between plant density and blight severity, and a negative relationship between yield per plant and both plant density and disease severity. We conclude that reduced plant population density could be one tool in a program to manage ascochyta blight of chickpea. Key words:Cicer arietinum, plant population density, ascochyta blight, yield Chang, K. F., Ahmed, H. U., Hwang, S. F., Gossen, B. D., Howard, R. J., Warkentin T. D., Strelkov, S. E. et Blade, S. F. 2007. Incidence du cultivar, de l'écartement des rangs et de la densité des semis sur la gravité de l'ascochytose et le rendement du pois chiche. Can. J. Plant Sci. 87: 395-403. Pendant deux ans, les auteurs ont procédé à des essais sur le terrain, à Brooks (Alberta), afin d'évaluer l'incidence du type de pois (desi ou kabuli), de l'écartement des rangs et de la densité des semis sur l'ascochytose du pois chiche. À cette fin, ils ont semé un cultivar de pois chiche desi à feuilles composées et un second de pois chiche kabuli unifolié dans des rangs espacés de 20, 30 et 40 cm, à raison de 20, 40 et 60 graines par rang de 3 m. La majeure partie de la variation observée au niveau de la gravité de la maladie résulte des différences entre les cultivars. La densité des semis, l'é-cartement des rangs et leurs interactions ont une incidence sensiblement plus faible sur l'ascochytose. À la fin de la saison de croissance, la gravité de l'ascochytose était toujours plus faible chez les pois de type desi que chez ceux de type kabuli. Un grand espacement des rangs et une faible densité des semis atténuent la gravité de l'ascochytose tout en accroissant le rendement grainier par plant. La première année, un grand écartement des rangs a diminué le rendement grainier par hectare, mais ce paramètre n'a eu aucune incidence significative sur le rendement en 2005. Des semis moins denses dans le rang n'on...

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Ascochyta Blight Resistance Inheritance in Three Chickpea Recombinant Inbred Line Populations

Cited by 98 publications

References 19 publications

QTL analysis for ascochyta blight resistance in an intraspecific population of chickpea (Cicer arietinum L.)

QTL analysis for ascochyta blight resistance in an intraspecific population of chickpea (Cicer arietinum L.)

Genetics of resistance to anthracnose and identification of AFLP and RAPD markers linked to the resistance gene in PI 320937 germplasm of lentil (Lens culinaris Medikus)

Impact of cultivar, row spacing and seeding rate on ascochyta blight severity and yield of chickpea

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