نتایج جستجو برای: wheat aphids
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Abstract Background Thinopyrum intermedium (2n = 6x 42) is an important wild perennial Triticeae species exhibiting many potentially favorable traits for wheat improvement. Wheat- Th . partial amphiploids serve as a bridge to transfer desirable genes from into common wheat. Results Three octoploid Trititrigia accessions (TE261–1, TE266–1, and TE346–1) with good resistances stripe rust, powdery ...
The functional response of Aphidius ervi to different Sitobion avenae densities on two wheat cultivars (Sardary and Alvand) was examined in laboratory conditions. Experiments were carried out in test tubes on an F2 lab generation without wheat clusters and also on F2 and F5 generations in pots using wheat clusters. In the tubes, female wasps were exposed to aphid densities of 2, 4, 7, 14, 28, 3...
The Russian wheat aphid, Diruaphis noxia (Kudjumov) (Hemiptera: Aphididae), is globally one of the most devastating pests of bread wheat, Tritium aestivum L., durum wheat, Triticum turgidum L., and barley, Hordeum vulgare L. Several sources of D. noxia resistance have been incorporated in commercial wheat and barley genotypes, but up to eight virulent biotypes, defined based on their ability to...
This paper will introduce and demonstrate the capabilities of the newly extended ‘Spatial DYMEX’ model software. Spatial DYMEX allows modellers to develop process-based population dynamics simulations that include spatially-explicit dispersal. Traditionally, models of species dynamics have focused on either population demographics or dispersal processes. Where trade-offs in model detail between...
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