First report of Meloidogyne naasi parasitizing turfgrass in Portugal
Publié en ligne: 25 août 2020
Pages: 1 - 4
© 2020 M. Clara Vieira dos Santos et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
Figure 1:
Root-knot nematodes (Meloidogyne naasi Franklin, 1965) extracted from soil and root samples collected from a football field in Portugal. A: turfgrass root showing galling by root-knot nematodes and excised M. naasi female (arrow); B: perineal pattern; C-G: second-stage juveniles: C: worm-star aggregation; D: whole body; E: pharyngeal region; F: tail; G: Pasteuria penetrans (ex Thorne, 1940) Sayre and Starr, 1985 endospores (arrows) attached to cuticle. Bars = 2000 µm (A); 125 µm (C); 25 µm (B, D-G).Morphometric characters of second-stage juveniles in the Portuguese population of Meloidogyne naasi Franklin, 1965.
|
M. naasi Portuguese population |
M. naasi Original description (Franklin, 1965) |
Characters |
n
|
Mean |
Range |
n
|
Mean |
Range |
Body length |
17 |
457.3 |
440.6-487.2 |
25 |
435 |
418-465 |
Maximum body width |
17 |
15.5 |
14.5-16.7 |
25 |
15 |
14-18 |
Stylet length |
17 |
14.4 |
13.6-15.2 |
25 |
14 |
13-15 |
Tail length |
13 |
82.8 |
76.4-89.9 |
25 |
70 |
52-78 |
Hyaline tail terminus |
14 |
26.6 |
23.2-32.0 |
25 |
n.d. |
n.d. |
a
|
17 |
29.6 |
27.8-32.6 |
25 |
28 |
25-32 |
c
|
13 |
5.5 |
5.2-5.8 |
25 |
6.2 |
n.d. |