Evaluation of indigenous and some of non indigenous tea clones to root lesion nematode (Pratylenchus loosi) in Gilan province

• Main Authors: Tanha Maafi, Zahra, Mirhoseini Moghadam, Abdolah, Yousofi, Nahid, Sadegh Hasani, Mahdi, Mir Sadeghi, Taghi, Sahmodin, Amrae, Bakhsh Zadeh, Fatane, Taheri, Esmaeil
• Format: Publication
• Language: Persian
• Published: Gilan (Iran) Plant pests and Diseases Research Institute 2003
• Subjects: DAMAGE; DANOS; DEGAT; DISEASE RESISTANCE; ENFERMEDADES DE LAS PLANTAS; INDIGENOUS ORGANISMS; INTRODUCED VARIETIES; IRAN ISLAMIC REPUBLIC; IRAN REPUBLICA ISLAMICA; IRAN REPUBLIQUE ISLAMIQUE; LAND VARIETIES; LESION; LESIONES; LESIONS; MALADIE DES PLANTES; ORGANISME INDIGENE; ORGANISME NUISIBLE; ORGANISMOS INDIGENOS; PESTS; PESTS OF PLANTS; PLAGAS; PLAGAS DE PLANTAS; PLANT DISEASES; PRATYLENCHUS; Pratylenchus loosi; RACINE; RAICES; RAVAGEUR DES PLANTES; RESISTANCE AUX MALADIES; RESISTENCIA A LA ENFERMEDAD; ROOTS; TEA; THE; VARIEDADES INDIGENAS; VARIEDADES NATURALIZADAS; VARIETE INDIGENE; VARIETE INTRODUITE

The root lesion nematode Pratylenchus loosi is widely distributed in most of tea plantations in the north of Iran and is a serious pest of tea in this region Some indigenous and non indigenous tea clones and some seedlings obtained from tea plants with tolerant appearance in infested tea fields were screened against P. loosi under pot and field conditions. Tea clone 3013 and an indigenous selected variety andrdquoFashalamiandrdquoshowed good vegetative growth and low population density of P. loosi in roots in comparison to other clones and Iranian selected varieties. The results from pot experiment corresponded with the field one in most cases, but clone 62/6 showed controversial results in both experiments so that, in pot experiment it showed susceptibility to P. loosi with 530 nematodes / 2 g. roots while in field experiment it was not infected by this nematode. On the basis of the obtained results it is necessary to screen the tested clones and Iranian selected varieties against different geographical population in order to access resistant and tolerant clones and introduce it to tea growers.