Hexamermis eurygasteri n. sp (Nematoda: Mermithidae) parasitising the sunn pest Eurygaster integriceps Puton (Hemiptera: Scutelleridae) in Turkey

WOS: 000291250900003PubMed ID: 21643896A new species of mermithid nematode, Hexamermis eurygasteri n. sp. (Nematoda: Mermithidae) is described as a parasite of the sunn pest Eurygaster integriceps Puton (Hemiptera: Scutelleridae) in Turkey. The combination of the following characters separate H. eurygasteri from other members of Hexamermis Steiner, 1924, as defined by Artyukhovsky (1990) and Kaiser (1991): amphidial pouch integrated into lateral cephalic papillae; amphidial openings minute; well-developed cuticular vulval cone; small vulval lips; vagina straight or slightly curved at tip, without reverse bend; spicules shorter in length than body diameter at cloaca; spicules straight, except occasionally for short bend at base; spicule tips bluntly rounded; and two double rows of genital papillae. This is the first description of a nematode parasite of a member of the Scutelleridae and the first description of a mermithid nematode from Turkey. This mermithid has potential as a biological control agent in an integrated control programme of the sunn pest

Leaf mineral composition of grafted eggplant grown in soil infested with Verticillium and root-knot nematodes

WOS: 000282876200014The objective of this work was to determine differences in leaf mineral composition between ungrafted and grafted onto (Solanum torvum) eggplant (Solanum melongena), cultivars 'Faselis' and 'Pala', grown in a soil infested with Verticillium dahliae and Meloidogyne incognita, or in a noninfested soil. Grafting increased leaf P and Mn concentrations, and decreased N concentrations, in both soils. Grafting also enhanced leaf Ca concentration of 'Pala', but it did not affect that of 'Faselis' depending on the cropping year. Leaf Mg concentration of grafted plants in infested soil was lower than that of ungrafted ones in noninfested soil. Results showed that, under the same fertilization program, the grafted 'Faselis' plants used the nutrients more efficiently than the 'Pala' ones. Use of S. torvum as a rootstock for 'Faselis' resulted in an effective protection against multiple pathogen infestation. Fertilization may be necessary when grafted 'Faselis' plants are grown in a soil infested with the pathogens, since grafting and infestation generally decrease leaf N, Mg, Ca and Fe concentrations, either by reducing the nutrient concentrations directly or by increasing leaf Mn concentration.Mustafa Kemal UniversityMustafa Kemal UniversityTo Mustafa Kemal University, for funding the project; and to Dr. Mehmet Arslan, for reviewing the earlier version of the manuscript

Leaf mineral composition of grafted eggplant grown in soil infested with Verticillium and root-knot nematodes

WOS: 000282876200014The objective of this work was to determine differences in leaf mineral composition between ungrafted and grafted onto (Solanum torvum) eggplant (Solanum melongena), cultivars 'Faselis' and 'Pala', grown in a soil infested with Verticillium dahliae and Meloidogyne incognita, or in a noninfested soil. Grafting increased leaf P and Mn concentrations, and decreased N concentrations, in both soils. Grafting also enhanced leaf Ca concentration of 'Pala', but it did not affect that of 'Faselis' depending on the cropping year. Leaf Mg concentration of grafted plants in infested soil was lower than that of ungrafted ones in noninfested soil. Results showed that, under the same fertilization program, the grafted 'Faselis' plants used the nutrients more efficiently than the 'Pala' ones. Use of S. torvum as a rootstock for 'Faselis' resulted in an effective protection against multiple pathogen infestation. Fertilization may be necessary when grafted 'Faselis' plants are grown in a soil infested with the pathogens, since grafting and infestation generally decrease leaf N, Mg, Ca and Fe concentrations, either by reducing the nutrient concentrations directly or by increasing leaf Mn concentration.Mustafa Kemal UniversityMustafa Kemal UniversityTo Mustafa Kemal University, for funding the project; and to Dr. Mehmet Arslan, for reviewing the earlier version of the manuscript