Intra- and inter-species variability of the aggressiveness in four Fusarium head blight species on durum wheat plants detected in an in vitro Petri-dish assay

Sakr, Nachaat

doi:10.1080/03235408.2018.1495390

Cited by 8 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The most commonly used method is the trapezoidal method, and it considers variability in time (hours, days, weeks, months or years) and evaluates average disease intensity between two points [48]. AUDPC is reported to be a best indicator to identify resistant mechanism in whole plant over a period of time [49] and lower AUDPC values shows more resistance. In the light chamber, the disease score at 15 and 30 days after inoculation in the MAGIC population varied from 2.16 to 8.71 and 2.93 to 8.56, respectively.…”

Section: Discussionmentioning

confidence: 99%

Variability and Trait Association Studies for Late Leaf Spot Resistance in a Groundnut MAGIC Population

et al. 2021

View full text Add to dashboard Cite

Globally, late leaf spot (LLS), a foliar fungal disease is one of the most important biotic constraint in groundnut production. Multi-Parent Advanced Generation Inter Cross (MAGIC) groundnut population was developed in a convergent crossing scheme using eight founder parents to develop a mapping population for multiple traits includes LLS. The experiments conducted in light chamber using detached leaf assay, and disease field screening nurseries at two locations (ICRISAT and ARS, Kasbe Digraj) showed significant variability for LLS resistance and component of resistance traits. Total 10 MAGIC lines with longer incubation (>11.0 days) and two MAGIC lines with longer latent period (>27 days) than the resistant parent, GPBD 4 were identified. The MAGIC lines, ICGR 171413, and ICGR 171443 with a lesion diameter of <1 mm and 4.10–5.67% of leaf area damage can be valuable sources for the alleles limiting the pathogen severity. A total of 20 MAGIC lines recorded significantly superior for disease score at 105 DAP_I (5.60–6.89) compared to resistant check, GPDB 4 (6.89). Further studies to determine the type and number of genes controlling the LLS component traits in groundnut will be useful for improvement of resistance to LLS. Genomic selection approach can be valuable in groundnut breeding to harness the minor alleles contributing to the component traits of LLS resistance.

show abstract

Section: Discussionmentioning

confidence: 99%

Variability and Trait Association Studies for Late Leaf Spot Resistance in a Groundnut MAGIC Population

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Therefore, AUDPC standard seems to be an efficient criterion for screening FHB resistance at early stages and has related to type II resistance on adult spikelets. In vitro AUDPC standard data were highly significantly correlated with artificial inoculation data in the growth chamber on durum and bread wheat cultivars (Types I and II) [26,27,30,31].…”

Section: Discussionmentioning

confidence: 86%

In Vitro Quantitative Resistance Components in Wheat Plants to Fusarium Head Blight

Sakr¹

2019

TOASJ

Self Cite

View full text Add to dashboard Cite

Background: In vitro tools have proved to be very useful in identifying quantitative resistance in wheat to Fusarium Head Blight (FHB) infection. However, there is a need to understand how the different in vitro and in planta tests correlate to describe the level of wheat resistance to FHB infection. Objective and Methods: We evaluated the correlation between in vitro symptom assessment using nine quantitative resistance criteria and in planta disease severity for Type II resistance assessment using a set of 16 FHB isolates across two widely grown Syrian wheat cultivars: Cham1 (durum) and Cham6 (bread). Results: Cultivar differences after inoculation with fungal isolates in seedlings and adult plants relative to the controls were detected. There were significant differences in the resistance of two wheat cultivars as measured by adult FHB resistance, Latent Period (LP) of detached leaf inoculation and standardized Area Under Disease Progress Curve (AUDPCstandard) of modified Petri-dish inoculation. Correlation coefficients between FHB severity and the two in vitro components LP and AUDPCstandard were significant (r=0.545 with p<0.05, and r=0.659 with p<0.01, respectively). No significant differences in the resistance of Cham6 and Cham1 were indicated for the other seven in vitro components: incubation period and lesion length of detached leaf inoculation, germination rate reduction and coleoptile length reduction of modified Petri-dish inoculation and lesion length of clip-dipping inoculation and percentage of infected seedlings of foliar-spraying and pin-point inoculations. Results from these seven components were not correlated with adult FHB resistance. Longer latent period and less AUDPCstandard were related to greater FHB disease-type II resistance. Conclusion: LP and AUDPCstandard are indicators of mechanisms of resistance occurring in the whole plant during FHB infection. Therefore, the idea of using in vitro components is based on their predictive ability of in planta adult FHB resistance.

show abstract

Aggressiveness of Fusarium species causing head blight on wheat plants determined in detached leaf and seedling in vitro assays

Sakr

2020

Indian Phytopathology

View full text Add to dashboard Cite

Intra- and inter-species variability of the aggressiveness in four Fusarium head blight species on durum wheat plants detected in an in vitro Petri-dish assay

Cited by 8 publications

References 14 publications

Variability and Trait Association Studies for Late Leaf Spot Resistance in a Groundnut MAGIC Population

Variability and Trait Association Studies for Late Leaf Spot Resistance in a Groundnut MAGIC Population

In Vitro Quantitative Resistance Components in Wheat Plants to Fusarium Head Blight

Aggressiveness of Fusarium species causing head blight on wheat plants determined in detached leaf and seedling in vitro assays

Contact Info

Product

Resources

About