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Showing 2 results for Ditylenchus

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.
Farzad Moradi, Hojatolah Mazaheri-Laghab, Leila Kashi, Seid Saied Mosavi,
Volume 11, Issue 2 (9-2022)

Moradi F, Mazaheri-laghab H, Kashi L, Moosavi SS (2022) Impact of raw and pure saponins of six alfalfa ecotypes on Ditylenchus dipsaci egg hatching. Plant Pathology Science 11(2):61-72.    Doi: 10.2982/PPS.11.2.61
Introduction: The stem and bulb nematode, Ditylenchus dipsaci, is an important and damaging pathogen in a number of agricultural and ornamental plants, including alfalfa. The aim of this study was to investigate the effect of raw and pure saponins of six alfalfa ecotypes on the hatching of this nematode's eggs in order to find a biological method for its management. Materials and Methods: The effect of raw and pure saponins of six alfalfa ecotypes on the hatching of stem nematode eggs was investigated in a completely randomized factorial design with two factors of alfalfa ecotypes (six ecotypes) and their saponins (raw and pure) in vitro. Results: Analysis of variance showed that the interaction effect between two factors, ecotype and saponin, is statistically significant. At concentrations of 50 and 90 microliters of crude saponin from different ecotypes, 30-42% and 33-59% of the nematode eggs did not hatch, respectively. The Nishaburi ecotypes caused the most and the Shiraz and Khrisari polycross caused the least number of egg hatching. Concentrations of 10 and 50 microliters of pure saponin resulted in between 56 and 69% and 61 and 79% of total nematode eggs failing to hatch, respectively. The local ecotypes Miandoab and Nishaburi had the highest and Shiraz Polycross the lowest number of egg hatches. Conclusion: Pure saponins of alfalfa ecotypes have a greater effect on nematode egg hatching than raw saponins. Saponins of Shiraz Polycross alfalfa ecotype have a better effect than other ecotypes.


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