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Showing 4 results for bazgir

Zeinab Zolfaghari, Eadi Bazgir, Arezoo Naghavi,
Volume 9, Issue 1 (3-2020)

Z, Bazgir E, Naghavi A (2020) Report of five species of plant parasitic nematodes associated with hawthorn forest trees in western Iran. Plant Pathology Science 9(1):15-29. DOI: 10.2982/PPS.9.1.15
Introduction: The Hoplolaimidae family is one of the largest and economically most important families of the order/ infraorder Tylenchida / Tylenchomorpha. The members of this family spread all over the world and can be found under different climatic conditions. Some species in this family are serious plant parasites and significantly reduce crop yields. Materials and Methods: In the forests of Khorramabad city in western Iran 70 samples were collected from the soil around the roots of hawthorn trees in the period of 2017-2019. After recording the properties of each sample, they were transferred to a laboratory and cooled at 4 °C. The nematodes were extracted from the soil using the tray method, then fixed and transferred to pure glycerin, and permanent slides were made. The morphological and morphometric properties of the nematodes were examined using a light microscope equipped with a Dino Capture camera. The nematode species were identified using scientific identification keys. Results: Five species of plant parasitic nematodes belonging to two genera of Hoplolaimidae were identified in this study, including Rotylenchus goodeyi, Helicotylenchus canadensis, H. digonicus, H. vulgaris and H. tunisiensis. Conclusion: R. goodeyi is reporting as a new record for the nematode fauna of Iran. Morphometrical and morphological characteristics of these nemadodes are described here.

Soraya Mirzapour, Mostafa Darvishnia, Eidi Bazgir, Hossein Mirzaei Najafgholi,
Volume 9, Issue 2 (8-2020)

Mirzapour S, Darvishnia M, Bazgir E, Mirzaei Najafgholi H (2020) Pathogenic variation of Didymella rabiei isolates causing Chickpea blight in three western provinces of Iran. Plant Pathology Science 9(2):1-13. DOI: 10.2982/PPS.9.2.1
Introduction: Chickpea blight, caused by Didymella rabiei, is the most limiting factor in chickpea production areas in the world, including the western provinces of Iran. The aim of this study was to investigate the pathogenic diversity of the isolates collected from western provinces of Iran (Ilam, Lorestan and Kermanshah) on differential lines of chickpea, as well as the relationship between pathogenic diversity of the isolates and their geographical origins. Materials and Methods: During the 2017-18 chickpea growing season, samples of infected plants were collected from fields in western provinces and transferred to the laboratory. Then 100 pure isolates of D. rabiei were obtained. Based on the location of collection, the isolates were divided into 20 groups. Based on the morphological characteristics, one isolate from each group was selected as a representative for greenhouse experiments. The pathogenic diversity of theses 20 isolates was assessed on eight differential lines of chickpea. The factorial experiments were performed in a completely randomized block design under greenhouse conditions. Results: The results of analysis of variance showed that there was a significant difference between differential lines and isolates at a probability level of p<0.01. Based on the response of the differential lines, the pathogenic isolates were grouped into three pathogenic groups, including pathogenic group 1 (weakly aggressive), group 2 (aggressive or moderately aggressive), and group 3 (highly aggressive). The isolates from Kermanshah and Lorestan Province were classified into Group 1 and the Ilam isolates into Groups 1, 2 and 3. The greatest severity of the disease was found in three isolates of Ilam province. The variety ILC3996 showed the highest resistance to all isolates. Conclusion: D. rabiei isolates from three western provinces of Iran are divided into three pathogenic groups: 1 (low aggressive), 2 (moderately aggressive), and 3 (highly aggressive). Highly aggressive isolates identified in Ilam province can be used in chickpea breeding programs to produce resistant cultivars to the disease.. The wild variety ILC3996 has resistant genes against these pathogenic groups and showed resistance to all of these isolates.

Masoumeh Changaei, Mostafa Darvishnia, Kourosh Azizi, Eidi Bazgir,
Volume 9, Issue 2 (8-2020)

Changaei M, Darvishnia M, Azizi K, Bazgir E (2020) Plant parasitic nematodes fauna of stone fruit trees in Khorramabad County. Plant Pathology Science 9(2):51-62. DOI: 10.2982/PPS.9.2.51.
Introduction: The identification of plant parasitic nematodes, which are serious damaging factors for stone fruit trees production, is important to follow the goals of the agricultural sector and increase production. Materials and Methods: In order to identify plant parasitic nematodes associated with stone fruit trees in Khorramabad County, Iran, 72 soil samples were collected from stone fruit trees from different regions of Khorramabad County, during 2017 and 2018. After the extraction, killing and fixing of nematodes, species were identified in consideration of morphological and morphometric characteristics using a light microscope equipped with a digital camera. Results: Thirty species of plant-parasitic nematodes were identified from 19 genera of the suborder Tylenchina. Morphological characteristics of Aphelenchoides sp. and Ditylenchus sp. which did not match any of the reported species described.
Conclusion: Aphelenchoides haguei, Helicotylenchus tunisiensis, Merlinius nanus, Filenchus ditissimus and F. facultativus on stone fruit trees in Iran are reporting for the first time.
Dorna Forghani, Eidi Bazgir, Mehdi Nasr Esfahani, Mostafa Darvishnia,
Volume 9, Issue 2 (8-2020)

Forghani D, Bazgir E, Nasr Esfahani M, Darvishnia M (2020) Pathogenicity severity of  Iranian isolates of Rhizoctonia solani  in Burren potato cultivar. Plant Pathology Science 9(2):63-72.            DOI: 10.2982/PPS.9.2.63.
Introduction: Rhizoctonia solani Kühn is a soil borne fungus that causes stem canker and black scurf and severely damages crop in various potato growing areas in Iran. The aim of this study was to investigate the pathogenicity of various fungal isolates from different potato growing areas in Iran on the Burren cultivar. Material and Methods: In this study, The pathogenicity of 70 isolates of Rhizoctonia solani from major potato growing areas in Iran including the provinces of Ardabil, Isfahan, Fars, Kurdistan, Kerman, Lorestan and Hamedan was investigated on the potato cultivar ‘Burren’ in completely randomized design experiment under greenhouse conditions. Results: The analysis of variance showed that the pathogenicity of the isolates was very different at probability level of 1% is significant, and therefore they were divided into different groups. Conclusions: The isolates of Ardabil-1, Ardabil-5, Isfahan-14, Fars-26, Fars-29, Kurdistan-34, Kurdistan-39, Kurdistan-40, Kerman-47 and Hamedan-66 had the highest pathogenicity, while the  isolates Fars-21, Isfahan-20, Hamedan-65 and Isfahan-18 showed the lowest pathogenicity, respectively.

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