Perineal pattern of meloidogyne graminicola
WebRoot-knot nematodes (RKNs), Meloidogyne spp., and particularly M. graminicola, are serious pests of rice, being, probably, the most economically important plant-parasitic nematode in this crop. M. graminicola is an obligate sedentary endoparasite adapted … WebJan 29, 2014 · Finally, two Meloidogyne species, M. graminicola and M. kikuyensis, were reported to affect members of the Poaceae family, Paspalum spp. and kikuyu grass (Pennisetum ... This problem is best illustrated by the fact that the existence of what is known as the incognita type perineal pattern is now acknowledged to occur in a number …
Perineal pattern of meloidogyne graminicola
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Webbody width, length of the second stage juveniles, and female perineal pattern, indicated that Meloidogyne species found was M. graminicola. Key words: Morphology, morphometric, perineal pattern. http://www.ainfo.inia.uy/digital/bitstream/item/12329/1/Belle-C.-2024.-Australasian-Plant-Pathology-10.1007-s13314-018-0333-2.pdf
WebAbstract: The perineal pattern of Meloidogyne graminicola is oval, characterized by the anastomosing of cuticular striae converging, and elevating at the tail terminus. A deep lateral incisure forming a low arch traverses the rounded perineal pattern of Meloidogyne hapla. WebMeloidogyne graminicola, a devastating plant pathogen of rice (Oryza sativa), is considered to a severe constraint to productivity in rice-growing areas (Zhan et al., 2024). ... and second-stage juveniles (J2) were identified as described previously (Tian et al., 2024; Wang et al., 2024). The perineal pattern of the females (n=12) was ...
WebOct 26, 2024 · In females (n = 20), the perineal pattern was dorsoventrally oval with low and round dorsal arch, and the lateral field was not obvious or absent, striae are usually … WebFeb 7, 2024 · Meloidogyne graminis. Light (A, B, E, H, J) and scanning electron microscope (C, D, F, G, I, K) photographs. Females: A, perineal pattern. Males: B, C, anterior region in …
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WebFig. 2 Perineal pattern (a and b), and esterase phenotype (c)of Meloidogyne graminicola detected in Cyperus rotundus in Santa Maria, Rio Grande do Sul state, Brazil (VS1: Meloidogyne graminicola; Est. J3*: Meloidogyne javanica reference isolate) Fig. 1 Meloidogyne graminicola root infestation symptoms on purple nutsedge (Cyperus … how to set a tempo in sibeliusWebDec 18, 2024 · Cuticle prominently annulated. Annules about 2.1-2.5 µm apart near mid-body. Lip region continuous with body or slightly offset by a constriction, nearly flat anteriorly, 3.5-4.0 µm high and 8.5-9.0 µm wide, consisting of a prominent labial annule … how to set a snap trapWebPerineal pattern morphology has been the standard characteristic used for the identification of the most common Meloidogyne species since 1949 (Chitwood, 1949). The perineal … how to set a threshold valueWebApr 23, 2024 · Meloidogyne enterolobii, reported from only a few crop production areas in South Africa (Van den Berg et al., 2024), is very aggressive, has a wide host range and is known to overcome various root-knot nematode resistance genes (Castagnone-Sereno, 2012). ... (particularly perineal pattern morphology) for accurate identification of … how to set a task as priorityWebMolecular identification was based on amplification of r-DNA by polymerase chain reaction technique using primers rDNA2 and rDNA 1.58s. RKN were detected associated with the incidence of root knot in rice plant. RKN was identified as Meloidogyne graminicola based on morphological characters of juvenile 2 and the female perineal pattern. how to set a time limitWebOct 4, 2024 · Several pear shaped females of Meloidogyne sp. were observed with gelatinous egg masses often completely embedded inside the root galls. The perineal pattern of the females(n = 9) was oval-shaped with low and round dorsal arches, and striae were smooth and sometimes few lines converge at either end of vulva. Lateral fields … how to set a timer in javaWebthe perineal pattern. Infective second stage juveniles are short (0.3-0.5 mm) and have a weak cephalic framework. The esophageal gland lobe overlaps the intestine ventrally. The tail tip tapers to a long, fine point with a long hyaline region. ETIOLOGY M. graminicola is a damaging parasite on upland, lowland and deepwater rice. how to set a theme in outlook