Two greenhouse experiments were conducted to evaluate ten ornamental plant species namely, Amaranthus tricolor, Coleus blumei, Ocimum basilicum, Gomphrena globosa, Catharanthus roseus, Dianthus caryophyllus, Tagetes erecta, Plectranthus amboinicus, Pelargonium odoratissimum and Pelargonium grandiflorum for their susceptibility or resistance to Meloidogyne incognita and Rotylenchulus reniformis infection. Based on the relationship between host growth response and reproduction factor (Rf) plant species of T. erecta was rated as highly resistant to both nematode species. However, plant species of C. roseus and P. odoratissimum were rated as resistant hosts to both nematode species. Plant species of G. globosa was rated as resistant or highly resistant host to M. incognita and R. reniformis respectively. Moreover, P. amboinicus was ranked as highly susceptible (HS) to M. incognita and R. reniformis as well. Plant species of P. grandiflorum was rated as resistant to M. incognita and susceptible to R. reniformis. Though, A. tricolor and C. blumei ranked as susceptible to M. incognita, and tolerant to R. reniformis. On the other hand, D. caryophyllus was found to be highly susceptible and susceptible to M. incognita, and R. reniformis respectively. Conversely, O. basilicum ranked as tolerant host to M. incognita and highly susceptible host to R. reniformis.

المصدر: Mostafa, Fatma, A.M._*; Refaei, A.R.*; Khalil, A.E.** and El Deriny, Marwa, M.** *Agric..Zool.Dept., Fac. of Agric.,Mansoura Univ., Mansoura, Egypt **Nematology Division, Agric. Researh Center,Giza, Egypt د.اشرف السعيد خليل

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ا.د./أشرف السعيد خليل

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