Plant-nematode populations associated with uncultivated vegetation, adjacent strawberry plants, and alternate crop sites were studied at three locations in Minnesota. At one site (Forest Lake), Paratylenchus projectus, Meloidogyne hapla, and Pratylenchus tenuis were frequently associated with the roots of native vegetation. These nematode species were also present in adjacent strawberry beds. A...

The effects of Pratylenchus vulnus on growth and nutrition of Cadaman peach and Ishtara and Julior plum rootstocks were evaluated in a microplot experiment lasting two growing seasons. Cadaman peach was the only rootstock that showed suppressed growth for all growth parameters at the end of the first year. At the end of the second growing season, dry and fresh shoot weights as well as shoot len...

Pratylenchus penetrans was obtained from Premier strawberry in Norfolk County and the Niagara Peninsula and from celery in the latter area. Host affected the dimensions of P. penetrans to a greater extent than geographical area in Ontario. Adults of P. penetrans from southern Ontario tended to be smaller than those reported elsewhere. The presence of three lip annules was consistent in the seve...

This is a report on the presence of Meloidogyne spp., Helicotylenchus multicintus and Pratylenchus goodeyi in roots of banana crops in Crete.

The effect of 93 field crop and pasture cultivars on the end-of-season population densities of Pratylenchus thornei in soil was determined in the field in southeastern Australia. Wheat and barley cultivars had different effects on the population densities of P. thornei. Most commercial wheat cultivars that are grown in southeastern Australia were susceptible, while the barley cultivars were res...

ROBERTO ARCE-PÉREZ1, RODOLFO NOVELO-GUTIÉRREZ1 & AYDEÉ CORNEJO2 1Instituto de Ecología, A. C., Carretera antigua a Coatepec 351, El Haya, 91070 Xalapa, Veracruz, MEXICO. E-mail: [email protected]; [email protected] 2Instituto Conmemorativo Gorgas de Estudio de la Salud, Ave. Justo Arosemena y Calle 35, Apartado Postal N° 0816-02593, Panamá, República de Panamá. E-mail: acornejo@gorg...

Nematode Collection and DNA Extraction Nematodes were collected following methods previously described [1]. Mixed-­‐stages of Anguina agrostis were obtained from infected bentgrass seed. Globodera ellingtonae eggs were obtained from cysts reared on potato in field microplots. A population of Xiphinema americanum originally obtained from a vineyard was cultured in soil on sudangrass in a greenho...

Host suitability of olive cultivars Arbequina and Picual to several plant-parasitic nematodes was studied under controlled conditions. Arbequina and Picual were not suitable hosts for the root-lesion nematodes Pratylenchus fallax, P. thornei, and Zygotylenchus guevarai. However, the ring nematode Mesocriconema xenoplax and the spiral nematodes Helicotylenchus digonicus and H. pseudorobustus rep...