A wheat (Triticum aestivum L. emend Thell) disomic addition line (2n = 6x = 44), SH1-152-2, with a pair of Elytrigia pontica (Podp.) Holub 2n = 10x = 70 [syn. Agropyron elongatum (Host) P.B.] chromosomes controlling blue aleurone color was crossed with a short-statured spring wheat ;Sonora 64' (T. aestivum). Isoline pairs of blue-disomic addition lines and nonblue euploid lines were produced by...

Limited availability of herbage during the cool season creates a problem of a supply of nutrients for livestock producers throughout the southern Great Plains of the USA and, particularly, on small farms where resource constraints limit possible mitigating strategies. Six coolseason grasses were individually sown into clean-tilled ground, no-till drilled into stubble of Korean lespedeza [Kummer...

The main British population of Gortyna borelii occurs on the north Essex coast, on sites very close to sea level. During 1999, 2000 and 2001, ovipositing strategies of G. borelii were studied providing details of egg laying behaviour, preferred oviposition host plants, height of ova deposition and distance of the oviposition site from the nearest larval food plant (Peucedanum officinale). Six o...

The south of the Non-Chernozem Region is north-ern boundary sugar beet production in Russian Fed-eration. An important factor restraining growth crop productivity high weed infestation crops. To devel-op an effective system protection against weeds, it necessary to study their species composition order determine most occurring and noxious species. available data geobotanical surveys since 1930s...