Ascochyta blight of chickpea ( Cicer arietinum L.): a review of biology, pathogenicity, and disease management (original) (raw)
Pakistan Journal of Phytopathology, 2022
Chickpea (Cicer arietinum L.) is the second largest pulse crop cultivated worldwide. Ascochyta blight caused by Ascochyta rabiei is the major constraints to chickpea production across the continent including Pakistan. The pathogen Ascochyta rabiei is highly variable. Chickpea cultivars contain limited resistance to pathogen due to their potential for sexual recombination. Investigations were conducted for the identification resistant sources against A.rabiei. Sixty-six chickpea accessions and one susceptible variety were tested against A. rabiei. However, four accessions TG-1427, Star Channa, PARB913/CH03 and PARB913/CH02 showed resistant reaction, eight accessions moderately resistant reaction, eleven accessions developed moderately susceptible reaction whereas twenty two accessions recorded susceptible reaction, moreover remaining twenty one accessions exhibited highly susceptible reaction with maximum ratings ≥ 9. Ten fungicides were tested against A. rabiei at three concentrations (3g, 5g and 7g/liter of water) on the susceptible cultivars (AUG-424). Application of Pyraclostrobin and Azoxystrobin proved most effective and expressed minimum disease incidence 8.37 and 10.97% respectively on comparison to control 77.31%. Results of the present investigation will help the farming community and researchers for timely management of A. blight. Resistant accessions that were identified in this study will be useful for developing blight resistant cultivars.
ersi t y of Agri cul t ure F ai sal abad, Paki st an. 2 Depa rt m ent of Pl ant Pat hol ogy, Univ ersi t y of Agri cul t ure F ai sal abad, Paki st an. The present studies were conducted to estimate correlation and combining ability analysis among quantitative traits in chickpea (Cicer arietinum L.) during 2008 to 2010. Ten chickpea varieties/lines (08-AG-004, CH-70/02, CH-76/02, NOOR-91, K-70005, K-70008, K-70022, CM-2008, YN-08004 and K-70009) were evaluated for the source of resistance against Ascochyta rabiei but none was found highly resistant. However four lines (08-AG-004, CH-70/02, CH-76/02 and NOOR-91) were moderately resistant and five lines (K-70005, K-70008, K-70022, CM-2008 and YN-08004) exhibited moderately susceptible reaction. Among twenty varieties/lines were evaluated for the source of resistance but none was found highly resistant and two lines 101 and 620 were resistant. However four lines viz. Paidar-91, Pb-2000, 818 and 870 were found to be moderately resistant...
Indian Journal Of Agricultural Research
This study examined the effect of three synthetic fungicide, maneb “Manebe80®” chlorothalonil “Bravo®” and azoxystrobin “Ortiva®” on the incidence of ascochyta blight (AB) of chickpea caused by Ascochyta rabiei using three chickpea germplasm (ILC482, ILC484 and Flip 1025). The results, statisticaly reliable (C.V. less than 20%), indicated the in vitro test of chemical control has significant effect at P0.01, on the mycelial growth of pathogen. All three fungicides caused important MGI% (Mycelial growth inhibition rate), which varied between 30 and 66%. There was a significant action induced by chlorothalonil fungicide (54 – 65%), followed closely by azoxystrobin (46 – 63%) and maneb (30 – 65%). In the in vivo test of chemical control for AB incidence by detached leaves showed a remarkable percentage of reduction in the severity of ascochyta blight varied between 20 and 80%. We noticed that the systemic fungicide like azoxystrobin can reduce the ascochyta blight severity (RDS%), with...
Options for reducing ascochyta blight severity in chickpea (Cicer arietinum L.)
2007
In presenting this thesis in partial fulfillment of the requirements for a Postgraduate degree from the University of Saskatchewan, I agree that the Libraries of this University may make it freely available for inspection. I further agree that permission for copying of this thesis in any manner, in whole or in part, for scholarly purposes may be granted by the professor or professors who supervised my thesis work or, in their absence, by the Head of the Department or the Dean of the College, in which my thesis work was done. It is understood that any copying or publication or use of this thesis or parts thereof for financial gain shall not be allowed without my written permission. It is also understood that due recognition shall be given to me and to the University of Saskatchewan in any scholarly use which may be made of any material in my thesis.
Journal of Animal and Plant Sciences, 2017
Chickpea Blight is a devastating disease of chickpea (Cicer areitinum L.) worldwide caused by Ascochyta rabiei (Pass.) Lab. The disease is more disastrous particularly in long cool and humid environmental spells. It results in huge losses by wiping off all the crop in the desert areas whenever hit its epidemics. To manage this disease, different management strategies are practiced. However, breeding resistance to the host is the best and environmentally safe strategy. During 1970s, the loss of host resistance against the pathogen was reported, so extra ordinary efforts were started by the scientists to enhance the host tolerance towards the pathogen. In this way, relatively simple field screening techniques were followed for breeding and identification of new resistant genotypes. The review sums up the efforts regarding host breeding against chickpea blight involving large scale field screening experiments as well as recent marker assisted breeding using the molecular mapping and QTLs against the different strains of pathogen. Moreover, the important aspects covering the related knowledge of the pathogen, its biology, variability, perpetuation, characteristics and factor affecting the disease establishment have also been summarized.
Theoretical and Applied Genetics, 2004
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.
Chickpea (Cicer arietinum L.) is an important edible legume of Pakistan. Chickpea blight is a major yield reducing factor in Pakistan. Screening of chickpea advance lines was conducted under control conditions. Out of hundred advance lines, two advance lines were highly resistant, 2 resistant, 6 moderately resistant, 16 susceptible and 74 were found highly susceptible. Four fungicides Dew, Shelter, State and Nativo and three bio-pesticides Vampire, Biosal and Azadirechtin were tested against Ascochyta at different concentrations (500, 250 and 150 ppm) in lab. To evaluate the fungicides and bio-pesticides food poison technique was utilized. Results of the study revealed that Dew at all concentrations (150, 250 and 500 ppm) showed significant reduction in fungal colony diameter. Nativo presented significant reduction of colony at (500 ppm) concentrations while other fungicides Shelter and State did not affect at any concentration. The results of the field condition suggested, that Dew (150ml/acre), Nativo (65gm/acre) and Biopesticides product Azadirechtin (500ml/acre) found effective against disease while fungicide Shelter (600gm/acre), State (500gm/acre) and Bio-pesticide product Vampire (1000ml/acre) and Biosal (1000ml/acre) did not control the disease. This study could be helpful to control chickpea blight.
Response of Chickpea Lines to Ascochyta rabiei at Two Growing Stages
2005
During winter 2004 and 2005, two field and glasshouse experiments were conducted to evaluate the response of 471 chickpea genotypes to Ascochyta rabiei, as Ascochyta blight (AB) disease in Chickpea (Cicer aurietimum). Frequent rainfall at flowering and pod formation stages made favorite conditions conducive for the infection and symptoms expression. So, the genotypes with high level of tolerance at seedling stage proved response to the pathogen under field condition. Disease at seedling and adult plant stage exhibited high association, although level of infection was higher at adult plant stage. In glasshouse 65 genotypes at seedling stage and in field experiment 14 genotypes at pod formation stage were resistant to the pathogen. Following green house and field screening methods, six genotypes FLIP98-229C, FLIP82-150C,NCS 950204, NCS 950219, NCS 9903 and PaidarxParbat from NARC and six lines (FLIP 00-20C, FLIP 02-18C, FLIP 02-44C, FLIP 97-120C, FLIP 02-39C and FLIP 97-102C) from ICARDA found resistant for multilocational / agronomic evaluation and use as resistant parent trials for high yielding AB resistance breeding varieties.
World Journal of …, 2010
This study has the objective to evaluate the pathogenic variability of the fungus Ascochyta rabiei, agent responsible for the Ascochyta blight of chickpea in the Algerian west. Twelve isolates of A. rabiei collected from various areas of the Algerian west, were evaluated for their pathogenic ability to infect twelve differential and local chickpea lines. The aggressiveness notations of the isolates, revealed that there are three highly aggressive isolates, eight are fairly aggressive and one, is less aggressive. Concerning the reaction of the chickpea lines with A. rabiei, we noticed variabilities between resistance, tolerance and sensitivity were observed.