Final diagnosis


Meloidogyne spp. (Root-knot nematodes)

The galls, initially pearly white, vary in size and affect both rootlets and roots of larger diameter. <b> <i> Meloidogyne </i> spp. </b> (root-knot nematodes)
When the level of population of the soil is important, one can see forming real chains of swellings and galls distributed along the roots. <b> <i> Meloidogyne </i> spp. </b> (root-knot nematodes)
Meloidogyne1
Meloidogyne3
Meloidogyne2
This root system heavily attacked by <b> <i> Meloidogyne </i> sp. </b> presents some rather spectacular hypertrophied roots. (root-knot nematodes)
This root system is strongly hypertrophied and corky. <b> <i> Meloidogyne </i> spp. </b> (root-knot nematodes)
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Meloidogyne4
In roots severely attacked by <b> <i> Meloidogyne </i> spp. </b>, it is quite easy to observe with a binocular magnifying glass, and by delicately tearing the tissues of the cortex, in hypertrophied females and white in color. (root-knot nematodes)
On this female extirpated from a gall, we can clearly see her stylet. <b> <i> Meloidogyne </i> spp. </b> (root-knot nematodes)
<b> <i> Meloidogyne </i> spp. </b>, like other phytophagous nematodes, have a hollow oral stylet that allows them to prick cells in order to absorb the contents. (root-knot nematodes)
In addition to females, the presence of adult nematodes or young larvae provided with a stylet confirms an attack of <b> <i> Meloidogyne </i> spp. </b> (root-knot nematodes )