Creation of wheat-alien disomic addition lines and localization of desirable genes on alien chromosomes are important for utilization of these genes in genetic improvement of common wheat. In this study, wheat-Agropyron cristatum derivative line 5113 was characterized by genomic in situ hybridization (GISH) and specific-locus amplified fragment sequencing (SLAF-seq), and was demonstrated to be ...

A 1.0 kb region of the mitochondrial cytochrome oxidase subunit I gene from the greenbug aphid, Schizaphis graminum (Rondani), was sequenced for 24 field collected clones from non-cultivated and cultivated hosts. Maximum likelihood, maximum parsimony and neighbour-joining phylogenies were estimated for these clones, plus 12 previously sequenced clones. All three tests produced trees with identi...

Abstract. Purpose. The research is aimed at developing methods for creating highly productive and nutritious pasture agrophytocenoses, adapted to the extreme conditions of arid zone Northern Caspian region. Methods. paper provides an assessment productivity perennial one-species (Agropyron) poly-species (Agropyron, Eutoria, Kochia) agrophytocenoses a five-year period their vegetation, depending...

The objective of these studies was to compare preference for leafy spurge (Euphorbiu es& L.) by sheep and goats. Study 1 was a choice test that paired leafy spurge with either arrowleaf balsamroot (Balsamorhiza sagittata (Pursh)Nutt.) or crested wheatgrass (Agropyron cristatum (L.)Gaertn.) for a 30 minute feeding period. Study 2 consisted of 3 grazing trials on spurgeinfested pastures. Differen...

The present study was conducted to examine photosynthetic characteristics of three dominant grass species (Agropyron cristatum, Leymus chinensis, and Cleistogenes squarrosa) and their responses to burning and nitrogen fertilization in a semiarid grassland in northern China. Photosynthetic rate (P(n)), stomatal conductance (g(s)), and water use efficiency (WUE) showed strong temporal variability...

Records are given for 15 Scaphisomatini species captured by V-flight intercept traps in Arizona. Baeocera hamata Löbl & Stephan, B. nana Casey and Toxidium gammaroides LeConte recorded the first time from Arizona, arizonensis sp. nov., obscura nov. vintercepta Scaphisoma declivum described as new. dakotanum Fall is synonymized with S. desertorum Casey. The aedeagi of Casey, rufulum LeConte, rub...