THE EFFECT OF PRATYLENCHUS PENETRANS ON A CLONE OF FRAGARIA VESCA

摘要

The effect ofPratylenchus penetrans(Cobb, 1917) Sher amp; Allen, 1953 on a clone ofFragaria vescawas investigated. In the presence of small numbers ofP.penetrans, the net increase in the number of petioles, petiole length, and fresh weight was significantly less than that of the controls. It would appear by analogy thatP.penetransmay well be an important primary parasite in the strawberry root-rot complex.