Search Results

You are looking at 1 - 10 of 353 items for :

  • "genetic variation" x
  • Refine by Access: All Content x
Clear All

The gene pool of Polish oat cultivars is quite narrow. Obsolete cultivars bred at the beginning of the 20th century could be one of the “new” sources of genetic diversity. Re-using them in breeding programs might be much easier than interspecific hybridization with wild relatives. The aim of this study was to assess genetic variation within cultivars bred in Poland before 1939. Molecular analysis was carried out using ISSR markers. The obtained results have shown the old cultivars are much more heterogenic than the advanced ones. Distinctiveness of the gene pool of these accessions in relation to the modern Polish cultivar and landrace was also observed. UPGMA analysis has shown, despite the considerable time lapse, the tested cultivars retain their genetic integrity. Based on archive pedigree data it was found that most of the analysed accessions had diverse origin. Low value of total genetic variation of the old cultivars collection may indicate the gene pool of the primeval oat forms which were brought and grown in Poland was quite narrow. Both breeding history and the results presented in this paper suggest the restoration of old cultivars to Polish breeding should be one of the main tasks of gene bank in the future. According to the monitoring of accession sharing conducted by the national gene bank, breeders’ interest in old cultivars and landraces was and still is neglected.

Restricted access

, A.Ju. 2000. Multivariate analysis of genetic variation in Aegilops tauschii from the world germplasm collection. Genet. Resour. and Crop Evol. 47 :185–190. Dudnikov A

Restricted access
Acta Veterinaria Hungarica
Authors: Daniela Šátková-Jakabová, J. Trandžík, Ľudmila Hudecová-Kvasňáková, Erika Hegedüšová-Zetochová, A. Bugarský, J. Buleca Jr., L. Zöldág, F. Jakab, and P. Fľak

457 Edwards, A., Hammond, H. A., Jin, L., Caskey, C. T. and Chakraborty, R. (1992): Genetic variation at five trimeric and tetrameric tandem repeats. Genomics 12 , 241

Restricted access
Cereal Research Communications
Authors: Zhonghu He, Zhaohua Xu, Lanqin Xia, Xianchun Xia, Jun Yan, Yan Zhang, and Xinmin Chen

Boggini, G..; Cattaneo, M.; Paganoni, C.; Vaccino, P. (2001). Genetic variation for waxy proteins and starch properties in Italian wheat germplasm. Euphytica 119: 111–114 Vaccino P

Restricted access

1957 Lu, Z. M., Chen, J., Percy, R., Sharifi, M. R., Rundel, P. W., Zeiger, E. (1997): Genetic variation in carbon isotope discrimination and its

Restricted access

breeding systems and pollination vectors on the genetic variation of small plant populations within an agricultural landscape . – Oikos 81 : 17 – 29 . https://doi.org/10

Restricted access

Zhao, H. L., Houweling, A. H., Vanstone, C. A. és mtsai: Genetic variation in ABC G5/G8 and NPC1L1 impact cholesterol response to plant sterols in hypercholesterolemic men. Lipids, 2008, 43 , 1155

Restricted access

Wheat improves some traits when inoculated with Azospirillum. However, inconsistent results have been observed in field experiments. The ability of Azospirillum brasilense Cd to adhere to wheat was tested in a germplasm panel consisting of a number of bread wheat cultivars, synthetic hexaploids, synthetic derivatives, and a partial set of single chromosome substitution lines to determine the plant genetic role. Seeds of genotypes were grown in modified Hoagland's medium at seedling stage and then roots were inoculated with the bacteria and adhered cells were counted. The majority of the bread wheat cultivars and synthetic derivatives and some of the synthetic hexaploids were able to support bacterial adhesion. Neither the age of the seedling nor the imposition of either salinity stress or nitrogen starvation had any effect on the extent of adhesion. A pedigree analysis revealed that the root-adhered A. brasilense cultivars shared common ancestor(s), and the substitution line analysis suggested that the genes underlying the trait were located on chromosomes 5D and 6D. The present results are consistent with the notion that the D genome is the source of genetic variation for the capacity of A. brasilense to adhere to the seedling roots.

Restricted access

Ayana, A., Bekele, E., Bryngelsson, T. (2000): Genetic variation in wild sorghum ( Sorghum bicolor ssp. verticilliflorum (L.) Moench) germplasm from Ethiopia and Eritrea assessed by random amplified polymorphic DNA (RAPD). Hereditas , 132

Restricted access

110 1439 1444 Pagnotta, M.A., Impiglia, A., Tanzarella, O.A., Nachit, M.M., Porceddu, E. 2004. Genetic variation of the durum wheat landrace Haurani

Restricted access