TABLE CONTENTS

Identification of Medicinal Hosts for Root-knot Nematodes in the North of
Iran
Davarian T. (1), A. Taheri (2), M. Darajeh (2) & H. Alemi (2)
(1) Young Researchers Club, Islamic Azad University, Gorgan Branch, Gorgan, Iran; (2) Dept. of Plant
Protection, Faculty of Crop Sciences, Gorgan University of Agricultural Sciences and Natural Resources,
Gorgan, Iran.
Iran is considered as a major source for medicinal plants in the world, because of historical
backgrounds in medicinal identification and utilization to remedy human and animal diseases
and the plants significant diversity. So, study on plants pathogens to control their damage is
really important. During a survey conducting about distribution of root-knot
nematodes(Meloidogyne spp.) in the north of Iran, root infection of 10 important species of
medicinal plants: Artemisia abrotanum L.(Wormwood), Capsicum annuum L.(Red Pepper),
Lycopersicum esculentum L.(Tomato), Ocimum basilicum L.(Basil), Olea europaea
L.(Olive), Oxalis corniculata L.(Woodsorrel), Punica granatum L.(Pomegranate), Rosa
canina L.(Rose), Viola odorata L.(Sweet Violet) and V. tricolor L.(Heartsease) were
observed during 2006. Infected roots were collected and females were extracted from roots,
then morphology of perineal patterns were studied and M. incognita (Kofoid & White, 1919)
Chitwood, 1949 and M. javanica(Treub, 1885) Chitwood, 1949 were identified. Galls
induced by these two species occurred both individually and in clusters, varied in size, with
evident distortions of entire root circumference in each host. Severe infection and damage
was observed in basil and tomato by M. incognita and M. javanica, respectively.
Study of Nematodes Associated with Ornamental Foliage Plants in the
North of Iran
Davarian, T. (1), A. Taheri (2), E. Pourjam (3) & Kh. Hemmati (2)
(1) Young Researchers Club, Islamic Azad University, Gorgan Branch, Gorgan, Iran; (2) Faculty of Crop
Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran; (3) Faculty of
Agriculture, Tarbiat Modarres University, Tehran, Iran.
In order to identify nematodes associated with ornamental foliage plants in greenhouses in
the north of Iran, soil and root samples of the most common ornamentals:(Aloe, Aluminium
plant, Angel wings, Begonia, Chinese evergreen, Climbing philodendron, Croton, Desert
privet, Devils ivy, Dumb cane, Dwarf banana, Elephant foot tree, Finger plant, Flaming
dragon tree, Goose foot plant, Ivy tree, Madagascar dragon tree, Mother of thousands, Prayer
plant, Rubber plant, Screw pine, Spider plant, Spineless yucca, Star fish, Sweetheart plant,
Swiss cheese plant, Tiger begonia, Umbrella grass, Umbrella tree, Upright philodendron,
Velvet plant and Weeping fig) were collected during 2004-2006. The samples were washed
and the nematodes were extracted by sieving and centrifugal sugar-flotation technique. Then
they were fixed and transferred to glycerin according to the Seinhorst modified method. The
permanent slides were mounted and studied thoroughly. In this study 35 species of
Tylenchida, 4 species of Rhabditida, 1 species of Dorylaimida were identified. The most
important species were Meloidogyne incognita, M. javanica, Pratylenchus neglectus and
Scutellonema brachyurus. The root lesion nematode, P. neglectus was found in 35% of soils
and 5% of root samples, with the population density of 10-120/200 g soil.The root-knot
nematodes, Meloidogyne incognita and M. javanica were the most dominant species with
significant damage up to 100% in some samples. In 29% of cases both species were present
in the same soil. S. brachyurus was found in 10% of soils and 6% of root samples, with the
population density of 50-430/200 g soil.
5 th International Congress of Nematology, 2008 202