Abstract Purpose Soil water repellence causes uneven soil wetting which can constrain dryland crop and pasture establishment yield. The same processes are likely to affect nutrient availability from fertiliser, but the effects of on growth nutrition per se have seldom been reported. Here, we investigated early wheat ( Triticum aestivum cv. Mace) uptake responses repellence. Methods Wheat was fu...

Seedings of winter wheat (Triticum aestivum L. cv. Kharkov MC 22) were grown at 24 C (unhardened) and 4 C (hardened). Indoleacetic acid (IAA) was added to excised coleoptile segments after lengthy incubation and their responses were determined by photometric auxanometry at both 25 C and 5 C. The segments' rates of uptake of (14)CIAA were also compared at both temperatures. Cold hardening had no...

The nucleolus organizing regions (NORs) on the short arms of chromosomes 1A(m) and 5A(m) of diploid wheat, Triticum monococcum L., are at the most distal loci in the linkage maps of these two chromosome arms. This distal location differs from the interstitial location of the Nor loci on chromosome arms 1BS of tetraploid Triticum turgidum L. and hexaploid T. aestivum L., 5DS of T. aestivum and d...

The cellular content of UDP-glucose in isolated wheat (Triticum aestivum L.) embryo increases 8-fold during the first 40 minutes of imbibition. An additional 3-fold increase in the amount of UDP-glucose was observed in the next 5 hours of germination. This communication also describes a unique, quantitative method to achieve a high sensitivity in a direct determination of UDP-glucose with Na [(...

Nitrogen is a key regulator of primary productivity in many terrestrial ecosystems. Historically, only inorganic N (NH(4)(+) and NO(3)(-)) and L-amino acids have been considered to be important to the N nutrition of terrestrial plants. However, amino acids are also present in soil as small peptides and in D-enantiomeric form. We compared the uptake and assimilation of N as free amino acid and s...

Kernel texture (‘hardness’) is an important trait that determines end-use quality of wheat (Triticum aestivum L. and Triticum turgidum ssp. durum [Desf.] Husn.). Variation in texture is associated with the presence/absence or sequence polymorphism of two proteins, puroindoline a and puroindoline b. This work describes the flanking and coding region sequences of puroindoline genes from 25 access...

Triticum genus encloses several tetraploid species that are used as genetic stocks for expanding the genetic variability of wheat (Triticum aestivum L.). Although the T. aestivum (2n = 6x = 42, AABBDD) and T. durum (2n = 4x = 28, AABB) karyotypes were well examined by chromosome staining, Giemsa C-banding and FISH markers, other tetraploids are still poorly characterized. Here, we established a...

Applications of the key plant nutrient nitrogen (N) increase uptake and accumulation pollutants such as polycyclic aromatic hydrocarbons (PAHs). However, it is unclear how a plant’s preference for particular form N in soil affects PAHs. In this study, we investigated physiological mechanisms involved fluoranthene by rice ( Oryza sativa L.) wheat Triticum aestivum examined these were affected di...