Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 527294
Title De structuur van de kegetop als taxonomisch kenmerk bij Heterodera-soonsa. met citroenvormige cysten. [English title not available]
Author(s) Oostenbrink, M.; Ouden, H. Den
Source Tijdschrift over plantenziekten (1954)3. - ISSN 0926-3454 - p. 146 - 151.
Department(s) Laboratory of Nematology
Publication type Article in professional journal
Publication year 1954
Keyword(s) vulva - Heterodera - Heteroderidae - ongewervelde dieren - dieren - eukaryoten - cysten (ontwikkelingsstadia) - plantenparasitaire nematoden - Nematoda - taxonomie - invertebrates - animals - eukaryotes - cysts (developmental stages) - plant parasitic nematodes - nematoda - taxonomy
Categories Nematoda
Abstract The structure of the vulva cone of the lemon-shaped cysts of species of Heterodera is of taxonomic value. In H. avenae (=H. major) the transparent lip tops of the cone are narrow and have a very short touching line forming together the shape of the figure 8. The vulvar split is extremely short and this probably prevents the deposition of eggs in a gelatinous egg-sac which is a normal feature in other lemon-shaped species. These characters can be usefully used to differentiate H. avenae in mixed populations. In H. schachtii the transparent patches on the lip tops are smaller than in H, trifolii and the average length of the patches is 32.1 micro . In H. trfolii it is 45.6 micro According to the statistics presented these two species can be distinguished accordingly as the average length of the patches in five specimens of a popula tion is below or above 38.7 micro .

R.T.L.

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