Plant Parasitic Nematodes Associated with Wheat in Northern and Middle Egypt

Korayem, A. M.; Youssef, M. M. A.; Mohamed, Mona A.; Elkelany, Usama Samy; Hammam, Mostafa M. A.

doi:10.21608/ejaj.2019.52843

Cited by 17 publications

(2 citation statements)

References 7 publications

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“…were found to be the most prominent in wheat fields in Ismailia governorate (PV= 67.35 and 37.95, respectively). These results are in coincidence with those previously reported by Korayem et al (2019) who indicated that there were 14 nematode genera and species associating wheat plants in 12 governorates in northern and mid Egypt. They also concluded that Tylenchorhynchus spp., Pratylenchus spp., Helicotylenchus spp., and Heterodera app.…”

Section: Resultssupporting

confidence: 92%

Phytonematodes Associating Wheat in North Eastern Egypt and Pathogenicity of Heterodera avenae on Certain Cereal Cultivars

Abdel-Baset¹,

Dawabah²

2020

Int. J. Phytopathol.

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A survey of plant-parasitic nematodes (PPNs) associating wheat in Ismailia governorate, northeastern Egypt was carried-out during 2016/2017 and 2017/2018 growing seasons. Results showed that seven PPNs genera and/or species were found associating wheat roots. These genera and/or species, in descending order of frequency, were: Tylenchorhynchus spp. (14%), Helicotylenchus spp. (10%), Heterodera avenae (8%), Ditylenchus spp. (5%), Meloidogyne javanica (4%), Pratylenchus spp. and Xiphinema spp. (3%, each). Two screening pot experiments, in two consecutive growing seasons (2017/17 and 2017/18) were carried out to determine the host suitability of 15 Egyptian cereal cultivars including bread wheat (Triticum aestivum), barley (Hordeum vulgare) and oat (Avena sativa) to the cereal cyst nematode, Heterodera avenae, under greenhouse conditions. Results of both experiments were very similar and showed that oat cv. Baladi and wheat cv. Giza 171 were highly susceptible, while wheat cvs. Masr 1, Masr 2, Masr 3, Sakha 95, Seds 1, Seds 12, and Shandawel 1 were susceptible. However, barley cvs. Giza 135, Giza 123, Giza 124, and Giza 125 were found to be moderately resistant to the tested nematode. H. avenae suppressed (P ≤ 0.05) the dry weights of roots, shoots and spikes of the inoculated plants, compared to the non-inoculated checks. Another greenhouse pot experiment was carried out during the wheat-growing season 2018/2019 to determine the effect of different initial population densities (Pi) of H. avenae on the growth parameters of wheat cv. Giza 171 and on nematode reproduction. Results showed that as the nematode Pi increased, both the wheat growth parameters and the nematode reproduction factor (Rf) were decreased (P ≤ 0.05).

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Section: Resultssupporting

confidence: 92%

Phytonematodes Associating Wheat in North Eastern Egypt and Pathogenicity of Heterodera avenae on Certain Cereal Cultivars

Abdel-Baset¹,

Dawabah²

2020

Int. J. Phytopathol.

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“…Sikandar et al (2020) mentioned that P. chrysogenum (Snef1216) caused inhibition of the egg hatching and increased mortality of M. incognita, relying on increasing the concentration and exposure time to the fungus filtrate; as a novel nematicidal agent against the root-knot nematode. Korayem et al (2019) stated that Aspergillus spp., A. niger, Fusarium spp., Penicillium spp., and Trichoderma spp. were common fungi in the rhizosphere of wheat crop grown in different governorates of Egypt.…”

Section: Impact On Percentage Of Fungal Frequencymentioning

confidence: 99%

Is Use of Two Trichoderma Species Sole or Combined with a Plant Extract Effective for the Biocontrol Meloidogyne incognita on Potato and Soil Microorganisms Diversity?

Youssef,

El-Nagdi,

Abd- El-Khair

et al. 2023

PJN

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Nature-friendly compounds are being explored to substitute chemically synthesized products for safe and effective control of crop pests. This study investigated the effects of Trichoderma viride (Tv) and T. virens (Tvr) as antifungal agents individually or combined with pomegranate peel aqueous extract (PP) on M. incognita infesting potato cv. Spunta. Based on the percentages juvenile reduction in soil at harvest time, the combined treatments of Tv or Tvr with PP recorded 66.8 or 60.5% nematode reductions, respectively, as each fungal agent was applied in soil before planting. However, such reductions were 83.7 and 78.7%, respectively, when Tv or Tvr were used as single treatments indicating more efficacy on M. incognita populations in the absence of PP. All treatments significantly (P ≤ 0.05) increased weights of plant branches and tubers; especially by individual than combined treatments. Biochemical compounds were influenced by different treatments of the tested materials. The diversity and community of aerobic bacteria, spore-forming bacteria and fungi and frequency% of fungi in potato rhizosphere varied among different treatments.

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Helicotylenchus sp.

2022

CABI Compendium

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Plant Parasitic Nematodes Associated with Wheat in Northern and Middle Egypt

Cited by 17 publications

References 7 publications

Phytonematodes Associating Wheat in North Eastern Egypt and Pathogenicity of Heterodera avenae on Certain Cereal Cultivars

Phytonematodes Associating Wheat in North Eastern Egypt and Pathogenicity of Heterodera avenae on Certain Cereal Cultivars

Is Use of Two Trichoderma Species Sole or Combined with a Plant Extract Effective for the Biocontrol Meloidogyne incognita on Potato and Soil Microorganisms Diversity?

Helicotylenchus sp.

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