Abstract
Isolated root-knot nematodes. Meloidogyne sp from the roots of the cucumber plant from different regions of southern Iraq, and the morphological study showed the presence of type M. incognita. It showed the perineal pattern characterized by the presence of a squarish dorsal arch located at the dorsal apex of the perineal pattern, and jagged and jagged cuticle lines, in addition to the unclear lateral fields and the presence of wrinkles or breaks instead. The measurements of the second larvae phase showed that the average body length (L) was 444 μm, while the largest body length was 496 μm and the lowest body length was 386 μm, the average length of the spear was 11.8 μm, the largest length of the shaft was 12.5 μm and the minimum length was 11 μm. The average tail length was 61.9 μm, the largest tail length was 66 μm, and the minimum tail length was 60 μm. As for hyaline, the largest length was 13 μm and the lowest length was 11 μm.
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