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Evaluation of a damage threshold for two-spotted spider mites, Tetranychus urticae Koch (Acari: Tetranychidae), in hop culture

โœ Scribed by F WEIHRAUCH


Book ID
111327814
Publisher
Association of Applied Biologists
Year
2005
Tongue
English
Weight
132 KB
Volume
146
Category
Article
ISSN
0003-4746

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Cytological studies of the two-spotted s
โœ C. C. M. Feiertag-Koppen ๐Ÿ“‚ Article ๐Ÿ“… 1980 ๐Ÿ› Springer Netherlands ๐ŸŒ English โš– 632 KB

The morphology and behaviour of the holokinetic chromosomes of Tetranychus urticae Koch were studied in maturing oocytes from diplotene up to and including metaphase. Each of the three diplotene bivalents contains 2-3 chiasmata. During congression the dyads of the axially orientated bivalents make