Morphometric Evaluation of Hypotriploid and Triploid Populations of Meloidogyne arenaria

A morphometric comparison of seven hypotriploid populations with five pooled triploid populations of Meloidogyne arenaria was made using standard descriptive statistics, stepwise discriminant analysis (SDA), and cluster analysis. Six morphometric characters of females, 14 of second-stage juveniles (...

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Veröffentlicht in:Journal of nematology. - 1969. - 25(1993), 2 vom: 10. Juni, Seite 121-35
1. Verfasser: Hirschmann, H (VerfasserIn)
Weitere Verfasser: Rammah, A
Format: Aufsatz
Sprache:English
Veröffentlicht: 1993
Zugriff auf das übergeordnete Werk:Journal of nematology
Schlagworte:Journal Article Meloidogyne arenaria cluster analysis cytological race enzyme phenotype host race hypotriploid light microscopy morphology morphometrics mehr... nematode root-knot nematode stepwise discriminant analysis (SDA) taxonomy triploid variation
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245 1 0 |a Morphometric Evaluation of Hypotriploid and Triploid Populations of Meloidogyne arenaria 
264 1 |c 1993 
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520 |a A morphometric comparison of seven hypotriploid populations with five pooled triploid populations of Meloidogyne arenaria was made using standard descriptive statistics, stepwise discriminant analysis (SDA), and cluster analysis. Six morphometric characters of females, 14 of second-stage juveniles (J2), and 18 of males were measured for each population. Useful differentiating characters included: body length in J2; stylet length in females and J2; stylet-knob dimensions in females and males; dorsal esophageal gland orifice distance in all three life stages; esophagus-length ratio in males and J2; excretory pore position in J2; and spicule length in males. SDA and cluster analysis showed that in each life stage, the hypotriploid populations were set off to varying degrees from the triploid populations. In addition, the relationships among populations differed when different life stages were compared. No consistent relationships could be detected among the populations, when morphometric data of the present study and morphological findings of the same populations in a parallel study were considered. Morphometric differences were not sufficient to propose any of the hypotriploid populations as new species 
650 4 |a Journal Article 
650 4 |a Meloidogyne arenaria 
650 4 |a cluster analysis 
650 4 |a cytological race 
650 4 |a enzyme phenotype 
650 4 |a host race 
650 4 |a hypotriploid 
650 4 |a light microscopy 
650 4 |a morphology 
650 4 |a morphometrics 
650 4 |a nematode 
650 4 |a root-knot nematode 
650 4 |a stepwise discriminant analysis (SDA) 
650 4 |a taxonomy 
650 4 |a triploid 
650 4 |a variation 
700 1 |a Rammah, A  |e verfasserin  |4 aut 
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