Pratylenchus (Nematoda: Pratylenchidae)
Diagnosis, Biology, Pathogenicity and Management, p. 384 (2007)
Pablo Castillo, Nicola Vovlas

Nematode resistance in Roses

In Rosa spp., Coolen and Hendrickx (1972b) identified slight resistance to P. penetrans in one (R. eglanteria) out of 13 common commercial rose rootstocks in Belgium, showing that Rosa dumetorum Thuill., Rosa canina L. and Rosa multiflora Thunb. Ex Murr. were hosts, in descending order of host suitability, for P. penetrans under field conditions. Similarly, Santo and Lear (1976) showed that Rosa noisettiana Thory cv. Manetti rootstock was a good host of P. vulnus whereas R. multiflora was less suitable and Ohkawa and Saigusa (1981) found that Rosa chinensis Jacq. cv. Major and R. multiflora cv. 60-5 proved to be efficient hosts for P. vulnus and P. penetrans. Subsequently, R. multiflora cv. Ludiek was found to he resistant to P. vulnus (Schneider et al., 1995). Peng and Moens (2002a) detected partial resistance to P. penetrans in R. virginiana P. Mill. which supported significantly lower multiplication of the nematode than the control R. corymbifera  cv. Laxa. Finally, Peng et al. (2003) screened 131 Rosa accessions and whilst the majority of accessions supported the multiplication of P. penetrans, resistance of R. multiflora cv. K1 and R. virginiana to P. penetrans was confirmed and Rosa laevigata Michx. anemoides supported a significantly low nematode population.