| phylogenetic relationships based on ribosomal dna data for four species of cyst nematodes from italy and one from syria. | phylogenetic analysis of new ribosomal dna (rdna) data for heterodera mediterranea, h. hordecalis, h. carotae, and h. fici from italy and h. ciceri from syria, along with published data for other species, showed high bootstrap support for the following relationships: (((((h. carotae h. cruciferae) h. goettingiana) (((h. trifolii h. ciceri) h. mediterranea) ((h. avenae h. latipons) h. fici))) (cactodera betulae h. hordecalis)) (globodera rostochiensis g. pallida)). the rdna sequence data were for ... | 2001 | 19265879 |
| factors affecting egg hatch of heterodera mediterranea and differential responses of olive cultivars to infestation. | the influence of temperature and olive root exudates on heterodera mediterranea egg hatch and the effects of h. mediterranea on the growth of two olive cultivars (arbequina and picual) were investigated. egg hatch occurred over a temperature range of 10 to 30 degrees c and was optimal at 20 to 25 degrees c. there were no differences in egg hatch between sterile deionized distilled water or root exudate dilutions (undiluted, diluted 1:1, and 1:2) of arbequina and picual at 20 degrees c. heteroder ... | 2002 | 19265924 |
| biology of heterodera mediterranea. | heterodera mediterranea completes embryogenic development in 15-18 days at 24 +/- 2 c. on olive and pistachio seedlings the postembryogenic development was completed in 42-50 days at 24-30 c. juveniles and adults have semiendoparasitic habits and do not penetrate completely into the root tissue. this cyst forming nematode has been detected only on olea europaea, pistacia lentiscus, and p. vera. syncytia formation and disorder of root stelar structure are the main anatomical changes induced by th ... | 1983 | 19295850 |