Czech Journal of Genetics and Plant Breeding, 2009 (vol. 45), issue 2
Seed pod shattering in the genus Lotus and its overcomingReview
Jana ŘEPKOVÁ, Jan HOFBAUER
Czech J. Genet. Plant Breed., 2009, 45(2):39-44 | DOI: 10.17221/26/2009-CJGPB 
Birdsfoot trefoil (Lotus corniculatus L.) is a perennial species that is known for its outstanding characters as a crucial component of meadow and pasture vegetation and a highly successful fodder crop. However, its cultivation has been limited by the inability to control pod shattering. The anatomic and physiological bases of pod shattering are known and are considered to be controlled by more than one gene. This paper reviews the known causes of pod shattering and potential ways of overcoming pod indehiscence in L. corniculatus. Genetic transformation is possible in the genus Lotus; however, the useful genes determining...
Reaction of wheat varieties to infection with barley yellow dwarf virus and prospects for resistance breedingOriginal Paper
Ondřej Veškrna, Jana Chrpová, Václav Šíp, Tibor Sedláček, Pavel Horčička
Czech J. Genet. Plant Breed., 2009, 45(2):45-56 | DOI: 10.17221/32/2009-CJGPB
The reaction of winter and spring wheat to infection with barley yellow dwarf virus (BYDV-PAV) was evaluated in three-year small-plot field trials on 71 wheat varieties registered in the Czech Republic and at two locations for two years on 63 selected potential sources of resistance. Disease symptoms (VSS) were visually recorded using a 0-9 scale and the percent reduction of grain weight per spike (GWS-R) was measured on twenty plants per plot. The evaluation showed that among the registered varieties of winter and spring wheat no variety had a high resistance to BYDV (with VSS lower than 3.5). GWS-R ranged between 24% and 60%. Higher variability in...
Effect of environmental and genetic factors on the stability of pea (Pisum sativum L.) isozyme and DNA markersOriginal Paper
Jiří HORÁČEK, Miroslav GRIGA, Petr SMÝKAL, Miroslav HÝBL
Czech J. Genet. Plant Breed., 2009, 45(2):57-71 | DOI: 10.17221/25/2009-CJGPB
Environmental (geographic location, year-to-year effect) and genetic (intravarietal variation) effects on the stability of the isozyme patterns of esterase (EST), acid phosphatase (ACP), alcohol dehydrogenase (ADH), leucine aminopeptidase (LAP), shikimate dehydrogenase (SDH) and glucose-6-phosphate isomerase (PGI) used for pea cultivar genotyping were studied. In addition, selected DNA markers (RAPD, SSR, ISSR, IRAP) were used to study intravarietal genetic homogeneity/variation at a DNA level. Five commercial dry-seed pea (Pisum sativum L.) cultivars Canis, Gotik, Komet, Sonet and Zekon were grown during four years (2001 - 2004) in three...
Analysis of genotypic diversity in sesame (Sesamum indicum L.) based on some physiological charactersOriginal Paper
Partha Protim BANERJEE, Paresh Chandra KOLE
Czech J. Genet. Plant Breed., 2009, 45(2):72-78 | DOI: 10.17221/42/2008-CJGPB
Genetic diversity among 30 sesame genotypes, collected from different parts of India, was studied using measurements of leaf area index (LAI) obtained 30, 45, 60 and 75 days after sowing (DAS), crop growth rates (CGR) estimated between the above leaf area measurements (i.e. 30 to 45 DAS, 45 to 60 DAS and 60 to 75 DAS), days to peak flowering, duration of flowering, duration from peak flowering to maturity and oil yield per plant. The normalised Euclidean distance was calculated from the data, and, independently, the Mahalanobis D2 statistics was calculated after dimensionality was reduced by pivotal condensation. The clustering pattern...
Determination of leaf rust resistance genes Lr10, Lr26 and Lr37 by molecular markers in wheat cultivars registered in the Czech RepublicShort Communication
Alena HANZALOVÁ, Taťána SUMÍKOVÁ, Pavel BARTOŠ
Czech J. Genet. Plant Breed., 2009, 45(2):79-84 | DOI: 10.17221/28/2009-CJGPB
Twenty-seven winter wheat cultivars registered in the Czech Republic were tested by molecular markers for the presence of Lr26 and Lr37, and twenty-eight cultivars for the presence of Lr10. Gene Lr37 was determined in eleven cultivars, gene Lr10 in ten cultivars and gene Lr26 in four cultivars. Eight cultivars had combinations of two Lr genes, one cultivar possessed all the three Lr genes. The results of marker analyses were compared with multipathotype analysis which confirmed the presence of Lr26 but did not enable the verification of the presence of Lr10 and...
Ochre-seeded poppy variety RedyNew Varieties
L. Kameníková, V. Vrbovský
Czech J. Genet. Plant Breed., 2009, 45(2):85-86 | DOI: 10.17221/7/2009-CJGPB