نتایج جستجو برای: phyllotreta
تعداد نتایج: 78 فیلتر نتایج به سال:
Crucifer-feeding flea beetles, Phyllotreta spp., are chronic insect pests in Canadian prairie canola production. Multiple laboratory and field feeding bioassays were conducted to determine the susceptibility of a wide range of crucifer species, cultivars, and accessions to feeding by flea beetles with the goal of discovering sources of resistant germplasm. In 62 bioassays of 218 entries, no con...
A convenient synthesis of (6R,7S)-(+)-himachala-9,11-diene, the pheromone of the chrysomelid beetle Phyllotreta striolata is described. The diene is obtained in a single operation by a spontaneous “bromination/dehydrobromination” of 2,6,6,9-tetramethylbicyclo[5.4.0]undec-8-ene. The halogenation/dehalogenation sequence proceeds spontaneously in CCl4, and is less uniform in CH2Cl2 and CHCl3. H NM...
The chapter presents previous field and laboratory investigations of cabbage flea beetles (Phyllotreta spp.) and cabbage stink bugs (Eurydema spp.) interactions with different Bras‐ sica crops in Slovenia. The special emphasis is given to an influence of different glucosi‐ nolates on injuries caused by mentioned economically important two genera of insect pests. In the study, we found out that ...
The glossy cauliflower PI 234599 has been used in breeding programs as a source of resistance to diamondback moth, Plutella xylostella (L.), and other lepidopterous larvae, but the relationship between insect resistance and glossiness has not been clear. One way to clarify this relationship is to find glossy lines carrying different genes for glossiness and test their resistance to insects. In ...
The distribution of Nosema phyllotretae infection of Phyllotreta atra populations in Turkey is reported for the first time. In total, 48 of the 1668 beetles from 24 samples collected in five localities were infected by the parasite. Nosema infection was found in P. atra adults from only one of the five localities studied. The infection average was 2.8% and it reached 42.5% in some samples. The ...
فون کک‌های گیاهی ایران، شامل 59 گونه از 11 جنس ارایه می‌شود. گونه‌ی Phyllotreta muehlei sp. nov. به عنوان گونه‌ی جدید توصیف شده و 13 گونه برای اولین بار از ایران گزارش می‌گردند.
The ability of a specialized herbivore to overcome the chemical defense of a particular plant taxon not only makes it accessible as a food source but may also provide metabolites to be exploited for communication or chemical defense. Phyllotreta flea beetles are adapted to crucifer plants (Brassicales) that are defended by the glucosinolate-myrosinase system, the so-called "mustard-oil bomb." T...
an account of the iranian alticine fauna, comprising 59 species from 11 genera, is presented. phyllotreta muehlei sp. nov. is newly described and 13 species are recorded for the first time from iran.
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