Evaluation of selected Cucumis sativus accessions for resistance to Pseudoperonospora cubensis in Egypt

Metwally, E.; Rakha, Mohamed

doi:10.17221/12/2015-cjgpb

Cited by 4 publications

(3 citation statements)

References 11 publications

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“…After three weeks, seedlings (two true leaves) were transplanted to the net house in May. The plants were watered daily and fertilized twice a week with recommended nutrients at concentrations of 40 kg N, 17 kg P2O5, and 30 kg K2O per feddan [0.42 ha] applied through a drip irrigation system using a venturi injector from the first week of transplanting up to the 14 th week (Metwally and Rakha, 2015). Cucumber plants were trained vertically on overhead wires.…”

Section: Plants and Growth Conductionmentioning

confidence: 99%

Silicon supplements affect yield and fruit quality of cucumber (Cucumis sativus L.) grown in net houses

Abd-Alkarim¹,

Bayoumi²,

Metwally³

et al. 2017

Afr. J. Agric. Res.

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Silicon (Si) plays an important role in plant growth and development, but the uptake, accumulation in tissue, and beneficial effects of Si differ greatly between plant species. Net house experiments were conducted with Cucumis sativus L. 'Shabah F 1 ' in 2013 and repeated in 2014 to determine the effects of Si supplementation on yield, fruit quality, and chemical composition. Diatomite (86-89% SiO 2 ) was applied to cucumber plants three times at two-week intervals after two weeks from transplanting through either foliar spraying (50, 100, 200 mg/l or soil drenching in the root area (500, 1000 and 2000 mg/l). All treatments produced higher early and marketable fruit yield (number and weight) in both years. At all growth stages, application of Si significantly increased fruit firmness, but the effects of Si on total soluble solids varied depending on growth stage and concentration of Si. Significant differences among treatments for ascorbic acid content of cucumber fruits were found in 2013 but not 2014. Tissue analyses showed that Si-treated plants had more Si in the leaves and fruits (% dry wt.), and phosphorus and potassium (% dry wt.) in the leaves compared to untreated controls. We conclude that both foliar sprays and soil drenches of Si have the potential to increase cucumber yield and fruit quality in net house production.

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Section: Plants and Growth Conductionmentioning

confidence: 99%

Silicon supplements affect yield and fruit quality of cucumber (Cucumis sativus L.) grown in net houses

Abd-Alkarim¹,

Bayoumi²,

Metwally³

et al. 2017

Afr. J. Agric. Res.

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“…Plants spaced 1.5 × 0.5 m between and within rows. Plants were grown under drip irrigation and fertilizer was applied according Metwally and Rakha (2015). Disease severity % was recorded and calculated as indicated above after 60 days from transplanting.…”

Section: Disease Evaluation In Greenhouse Trialsmentioning

confidence: 99%

Grafting Cucumber onto Interspecific Cucurbita Hybrid Rootstocks to Improve Productivity and Control wilt Disease Caused by Fusarium oxysporum f. sp. cucumerinum

Kamel¹,

Taher²

2021

Journal of Plant Production

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Commercial cucurbits such as cucumber, melon and watermelon are commonly grafted onto interspecific Cucurbita hybrid rootstocks to increase yield and mange soil-borne diseases. This study conducted in private farm in Qallien district in Kafr El-Sheikh Governorate northern Egypt during the period from 2018 to 2020 to identify local Fusarium wilt-resistant interspecific Cucurbita hybrid rootstocks which provide high grafting compatibility with hybrid cucumber scions. Results revealed that disease severity percentage in all interspecific hybrids (0 to 45%) was significantly lower than susceptible commercial cucumber Junco F1 (73.4%). Seven out of the 20 individual hybrids (A02, B02, D02, F01, G02, H01 and I02) were resistant or highly resistant to Fusarium wilt with a mean disease severity ≤ 25%. Results from the greenhouse trials confirmed high levels of resistance in three interspecific hybrids (G02, H01 and I02) which were used as rootstocks for cucumber Junco F1. Fruit yield parameters were increased significantly in grafted cucumber Junco F1 onto wilt-resistant interspecific hybrids compared to un-grafted cucumber. Highly significant differences in anatomical structure were observed between wilt-resistant interspecific hybrid rootstock H01 and susceptible check Junco F1. Fruit yield parameters of grafted cucumber Junco F1 were negatively correlated with disease severity. The interspecific hybrids evaluated in the present study could be promising rootstocks to increase productivity and manage soil-borne diseases for commercial production of major cucurbits in Egypt.

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“…Resistant cultivars were recently introduced into Egypt, but yield losses were high if no fungicides were used (Metwally and Rakha, 2015). Propamocarb is a systemic carbamate fungicide with protective action against (Pythium spp., Phytophthora spp.)…”

Section: Introductionmentioning

confidence: 99%

Effect of Temperature, Relative Humidity and Some Systemic Fungicides on Cucumber Downy Mildew and Certain Crop Parameters

Ahmed

El-Hassawy

2021

Egyptian Journal of Phytopathology

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Downy mildew caused by Pseudoperonospora cubensis (Berk. and Curt) Rostow is a major disease of cucumber (Cucumis sativus L.) in Egypt. The current study was carried out in Fayoum, Ismailia and Kafr Elsheikh Governorates in summer and fall during of 2018 and 2019 seasons. The effect of some whither parameters on downy mildew was studied. Temperature, relative humidity, disease severity and their relationships were determined. Five fungicides Previcur N 72.2 SL, Veulet 80 WP, Previcur Energy 840 SL, Infinito 68.75 SC and Profiler 71.1 WG, were used for the disease control. Final disease severity (FDS), area under disease progressive curve (AUDPC) and fungicides efficacy were measured and analyzed. Scanning electron microscope was used for histopathological studies. Fresh, dry weight and the average number of fruits/plant and fruit yield/feddan (ton) were recorded. Kafr Elsheikh recorded the lowest average temperature, being 23.8°C during the two growing seasons followed by Ismailia and Fayoum, being 25.2°C and 26.9°C, respectively. Kafr Elsheikh, also recorded the highest average of relative humidity, being 53.3% during the two growing seasons followed by Fayoum and Ismailia, being 52.9% and 51.9%, respectively. The same trend was observed for disease severity that recorded the highest average in Kafr Elsheikh, Ismailia and Fayoum 36.2, 31.45 and 30.9%, respectively during the two growing seasons. On the other hand, the lowest average temperature and the highest average of relative humidity were recorded in

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Evaluation of selected Cucumis sativus accessions for resistance to Pseudoperonospora cubensis in Egypt

Cited by 4 publications

References 11 publications

Silicon supplements affect yield and fruit quality of cucumber (Cucumis sativus L.) grown in net houses

Silicon supplements affect yield and fruit quality of cucumber (Cucumis sativus L.) grown in net houses

Grafting Cucumber onto Interspecific Cucurbita Hybrid Rootstocks to Improve Productivity and Control wilt Disease Caused by Fusarium oxysporum f. sp. cucumerinum

Effect of Temperature, Relative Humidity and Some Systemic Fungicides on Cucumber Downy Mildew and Certain Crop Parameters

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