Search Results
Water deficiency is a major constraint in wheat production and the most important contributor to yield reduction in the semiarid regions of the world. species related to wheat are valuable genetic sources for different traits including resistance/tolerance to biotic and abiotic stresses. To locate the genes controlling the physiological and agronomic criteria of drought tolerance, disomic addition lines of secale cereale cv. Imperial (donor) into the genetic background of Triticum aestivum cv. Chinese Spring (recipient) were tested under field, greenhouse and laboratory conditions. Disomic addition lines exhibited significant differences for relative water content (RWC), relative water loss (RWL), water use efficiency (WUE) and stomatal resistance (SR), indicating the presence of genetic variation and the possibility of selection for improving drought tolerance. Three physiological variables, RWL, WUE and SR, with high correlation with the stress tolerance index (STI) and germination stress index (GSI), contributed 69.7% to the variability of yield under stress (Ys) in the regression equation. Based on the physiological multiple selection index (MSI) most of the QTLs controlling physiological indices of drought tolerance were located on chromosomes 3R, 5R and 7R. The contribution of addition line 7R to the MSI was 47%. The evaluation of disomic addition lines for STI and GSI revealed that most of the QTLs involved in these quantitative criteria of drought tolerance are located on 3R and 7R. Cluster analysis and three dimensional plots of Ys, yield potential (Yp) and MSI indicated that 3R and 7R are the most important chromosomes carrying useful genes for improving drought tolerance.
Lessons to be learnt from the 50-year long-term fertilisation experiments on perennial rye and other crops in Őrbottyán
I. Kádár, L. Márton and I. Láng
Chai, J.F., Zhou, R.H., Jia, J.Z., Liu, X. 2006. Development and application of a new codomint PCR marker for dectecting 1BL.1RS wheat-rye chromosome translocations. Plant Breed. 125 :302
Shewry, P. R., Bradberry, D., Franklin, J., White, R. P. (1984): The chromosomal locations and linkage relationships of the structural genes for the prolamin storage proteins (secalins) of rye. Theor. Appl. Genet. , 69, 63
. Dimitrijevic , M. , Petrovic , S. , Gustafson , J.P. 2008 . The effect of wheat/rye translocation 1BL/1RS in a different quality genetic background on biological traits in wheat . Genetika 40 : 261 – 270
Növénytermelés 1993 42 391 398 Börner, A., Korzun, V. (1998): A consensus linkage map of rye
Abstract
Dielectric analysis (DEA), supported by thermogravimetric analysis (TG), differential scanning calorimetry (DSC), powder X-ray diffraction analysis (PXRD) and photomicrography, reveal the chiral difference in the amino acids. The acids are classified as dielectric materials based on their structure, relating chirality to the vector sum of the average dipole moment, composed of the constant optical (electronic) and infra-red (atomic) polarizabilities, as well as dipole orientation. This study encompasses 14 L-and D-amino acid isomers. Physical properties recorded include AC electrical conductivity, charge transfer complexes, melting, recrystallization, amorphous and crystalline phases, and relaxation spectra, activation energies and polarization times for the electrical charging process.
., Lukaszewski, A.J., Sodkiewicz, W., Apolinarska, B. 1980. The recombinants of two 4× wheat in crosses with rye. Hodowla Rosl. Aklim. Nasienn 24 :543–550. Apolinarska B. The recombinants
Weizen und Roggen . (Investigations on compatibility between. wheat and rye). Z. Planzenzüchtg . 64 : 44 – 72 . Lamoureux , D. , Boeuf , C. , Regad , F. , Garsmeur , O
1 19 21 Dhaliwal, A.S. MacRitchie, F. 1990. Contributions of protein fractions to dough handling properties of wheat-rye translocation cultivars. J
