Pathogenic Diversity of Ascochyta rabiei Isolates and Identification of Resistance Sources in Core Collection of Chickpea Germplasm

Farahani, Somayeh; Talebi, Reza; Maleki, Mojdeh; Mehrabi, Rahim; Kanouni, Homayoun

doi:10.5423/ppj.oa.12.2018.0299

Cited by 16 publications

(5 citation statements)

References 32 publications

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“…The determination of the pathotypes or races of A. rabiei can be difficult due to various factors such as the absence of standardized differentials and highly diverse populations. For instance, three pathotypes were identified in North Western Algeria (Benzohra, et al, 2011) and Pakistan using 11 chickpea lines, whereas four races/pathotypes were reported in Syria and Algeria while Turkey (Türkkan and Dolar, 2009) documented six races with seven chickpea cultivars being utilized for identification purposes (Farahani, et al, 2019). However, some studied like the one conducted by could not classify A. rabiei isolates into distinct categories because they lacked a standardized approach especially when working on strains that come from countries within West Iran's vicinity (Vafaei, et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Disease Surveillance and Pathogenic Variability of Ascochyta Rabiei causing Blight of Chickpea in Punjab Pakistan

Javed,

Mehmood,

Gondal

et al. 2023

Plant Health

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Chickpea is an important legume crop and plays a significant role in global food security. Production is affected by many biotic and abiotic factors. The most significant biotic factor, Ascochyta rabiei is a fungal pathogen that causes Ascochyta blight in chickpeas, leading to substantial yield losses globally and is the primary cause in Pakistan. This pathogen causes heavy yield losses annually in the chickpea industry. The knowledge of the pathogenic variability of A. rabiei isolates can significantly impact the effectiveness of blight disease management strategies. A survey was conducted to collect blight samples to assess the pathogenic variability of A. rabiei isolates from different chickpea-growing regions of Punjab. The disease incidence and severity data were recorded using the quadrat square method in the fields. After isolation and purification, the pathogenicity test was conducted for conformation of the isolates. The virulence of ten isolates of A. rabiei was analyzed on six differential chickpea genotypes under artificial inoculation conditions in the glasshouse. The differential genotypes showed different levels of resistance and susceptibility to the isolates. Based on the reactions, the population of A. rabiei was grouped into different groups using a 1-9 rating scale. Only two isolates, BKR-01 and LAY-01, produced a high virulent effect against six germplasm. These isolates were collected from the Bhakkar and Layyah. The isolate MTN-1 were categorised as the least virulent. At the same time, the remaining isolates showed a moderate level of reaction.

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Section: Discussionmentioning

confidence: 99%

Disease Surveillance and Pathogenic Variability of Ascochyta Rabiei causing Blight of Chickpea in Punjab Pakistan

Javed,

Mehmood,

Gondal

et al. 2023

Plant Health

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“…Punjab-1, a spreader/ check was planted after every two test entries for recording the severity/ intensity of ascochyta. All the plants were inoculated by spraying at 8-10 leaf stage, whereas scoring was done on 0 to 9 scale after about fourteen days of inoculation (Farahani et al, 2019;Gayacharan et al, 2020).…”

Section: Disease Reactionmentioning

confidence: 99%

Noor-2019: A High Yielding and Wilt Resistant Chickpea Kabuli (Cicer arietinum L.) Variety Developed through Introgression Breeding

Nadeem,

Naveed,

Shafiq

et al. 2024

SJA

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Over the years, a crop variety grown on the commercial scale and under different conditions becomes vulnerable to various kinds of issues involving both biotic and abiotic plant stresses, alone or in combinations. This demands their substitution with new and improved genotypes possessing higher productivity and inherent resistance/tolerance against yield-limiting stresses. In this context, this editorial reports the development of a new chickpea kabuli variety "Noor-2019". This cultivar has improved yield potential, dietary elements (proteins, fat, ash), and more importantly, resistance against fusarium wilt and ascochyta blight compared to the existing varieties. The evolution of this strain commenced in 2002-03 cropping season by crossing K-90399 as a female parent with K-52582 as a male parent. The female parent had high yield potential, whereas the male parent had wilt resistance and was developed through introgression breeding using ILWC-126, an accession of Cicer reticulatum. Henceforth, the genetic variability was created to select for high yield and wilt resistant recombinants in subsequent generations. Resultantly, a uniform and high yielding progeny line PCK-09012, later designated as "Noor-2019" was selected and evaluated for yield, agronomy, and insect pests. This cultivar revealed a potential yield of 2882 kg ha -1 in testing phase and outperformed standard checks by producing 78.2%, 13.1%, and 28.8% higher grain yield in station, adaptation and national uniform yield trials, respectively. The plants of Noor-2019 are 60-65cm tall, semi-erect, and medium in canopy spread. Its grains are light brown, ram-headed, medium in size with a 100-seed weight of 25 g. Adoption of this cultivar across different climatic regions of Punjab, and other provinces could contribute in attaining self-sufficiency in local chickpea production as well as plummeting import bill.

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“…A diversity of aggressiveness patterns and rapid evolution of highly virulent isolates within the A. rabiei population in Turkey disclose the adaptation plasticity of this destructive and prolific fungal pathogen (Nalçacı et al, 2021). Knowledge about pathogen aggressiveness and identification of sources of resistance to different pathotypes is very useful for the proper decisions in plant breeding programs (Farahani et al, 2019). The aim in this study was to determine the susceptibility of chickpea cultivars developed and widely grown in Turkey to pathotypes of A. rabiei and the changes that occurred over the years.…”

Section: Introductionmentioning

confidence: 99%

Promjene osjetljivosti starih i novoregistriranih kultivara slanutka (Cicer arietinum L.) na snijet prouzročenu patotipovima Ascochyta rabiei (Pass.) Labr.

Keçeli

2023

Poljoprivreda (Online)

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Blight disease, caused by Ascochyta rabiei (Pass.) Labrousse (teleomorph=Didymella rabiei), is one of the most important biotic stress factors affecting chickpea produc tion worldwide. The high variation in disease severity among different chickpea cul tivars and the decrease in the resistance of the cultivars over time make it necessary to test the cultivars regularly. The aim in this research was to determine and evalu ate the changes in the susceptibility of chickpea cultivars, which were developed in different years and widely cultivated, against A. rabiei pathotypes in Turkey. A three replication pot experiment was conducted in a randomized plot design in the climate chamber in 2021. Fifteen registered chickpea cultivars (including one susceptible and one susceptible control cultivar) and four pathotypes of chickpea blight disease agent A. rabiei were used in the study. While Pathotype-IV was determined as the most aggressive, it was followed by the Pathotype-III, Pathotype-II, and Pathotype-I, respectively. The Azkan cultivar, included as a Tolerant (T) control in the experiment, had the Mid-Susceptible/Susceptible (MS/S) values, which can be explained by the decrease in resistance over time. However, it is opined that the main reason for the better resistance values of Akçin-91, registered in 1991, and Gökçe, registered in 1997, was provoked by the genetic basis of these cultivars, when compared to the recently registered cultivars.

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Pathogenic Diversity of Ascochyta rabiei Isolates and Identification of Resistance Sources in Core Collection of Chickpea Germplasm

Cited by 16 publications

References 32 publications

Disease Surveillance and Pathogenic Variability of Ascochyta Rabiei causing Blight of Chickpea in Punjab Pakistan

Disease Surveillance and Pathogenic Variability of Ascochyta Rabiei causing Blight of Chickpea in Punjab Pakistan

Noor-2019: A High Yielding and Wilt Resistant Chickpea Kabuli (Cicer arietinum L.) Variety Developed through Introgression Breeding

Promjene osjetljivosti starih i novoregistriranih kultivara slanutka (Cicer arietinum L.) na snijet prouzročenu patotipovima Ascochyta rabiei (Pass.) Labr.

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