Czech Journal of Genetics and Plant Breeding, 2011 (vol. 47), issue 1
Variation in the spatio-temporal expression of insecticidal genes in cottonReview
Allah Bakhsh, Kamran Shahzad, Tayyab Husnain
Czech J. Genet. Plant Breed., 2011, 47(1):1-9 | DOI: 10.17221/131/2010-CJGPB 
The most significant breakthrough in plant biotechnology is the development of the techniques to transform genes from unrelated sources into commercially important crop plants to develop resistance against targeted insect pests. The spatio-temporal expression of insecticidal genes in transgenic cotton varies with plant age, plant parts and environmental conditions. The understanding of this temporal and spatial variation in efficacy and the resulting mechanisms is essential for cotton protection and production. This review summarizes variations in the efficacy of introduced insecticidal genes in cotton crop. The factors contributing to the variability...
Resistance of triticale to wheat leaf rust (Puccinia triticina)Original Paper
Alena Hanzalová, Pavel Bartoš
Czech J. Genet. Plant Breed., 2011, 47(1):10-16 | DOI: 10.17221/100/2010-CJGPB
Reactions of winter triticale cultivars mostly from central Europe to recent and old leaf rust isolates were tested in the greenhouse. In one trial 20 cultivars were tested with 8 leaf rust isolates, collected recently from official wheat and triticale trials in the Czech Republic and Slovakia. In another trial 15 cultivars were tested with 6 old leaf rust isolates, used to identify leaf rust resistance genes in wheat. The cultivars Cando, Hortenso and Tricolor, registered in the Czech Republic, were resistant to the majority of the recent isolates. The Hungarian cultivar Tatra was resistant to all the recent isolates. The old leaf rust isolates were...
Study of silicon effects on antioxidant enzyme activities and osmotic adjustment of wheat under drought stressOriginal Paper
Sara Tale Ahmad, Raheem Haddad
Czech J. Genet. Plant Breed., 2011, 47(1):17-27 | DOI: 10.17221/92/2010-CJGPB
The effect of silicon (Si) was investigated on the major antioxidant enzyme activities including superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), peroxidase (POD), relative water content (RWC), chlorophyll and soluble protein contents, proline (Pro) and glycine betaine (GB) accumulation in three different growth stages (2nd, 4th leaf and tillering stages) of wheat (Triticum aestivum L.) plants under drought stress. The experiment was performed in a completely randomized design for three treatments including control, drought and Si-drought (2mM silicate sodium/kg) with three replications in a greenhouse....
Variation of morphological and agronomic traits in hybrids of Trifolium pratense × T. medium and a comparison with the parental speciesOriginal Paper
Hana Jakešová, Jana Řepková, David Hampel, Lydie Čechová, Jan Hofbauer
Czech J. Genet. Plant Breed., 2011, 47(1):28-36 | DOI: 10.17221/2/2011-CJGPB
Trifolium pratense L. is a high-yielding and high-quality fodder crop. However, it shows low persistence, which may be overcome by hybridisation with species that produce rhizomes. Hybrids between T. pratense L. and T. medium L. were previously obtained by embryo rescue. The aim of this study was to evaluate 16 characteristics (stem weight, stem length, internode number, length/width ratio of a central leaflet of the trifoliate leaf on the 4th internode, stem thickness on the 4th internode, average leaf area of the trifoliate leaf, weight of dry plant, plant length, stem and head number per plant, head...
Expression of resistance to Ramularia leaf spot in winter barley cultivars grown in conditions of the Czech RepublicShort Communication
Pavel Mařík, Zdenek Šnejdar, Pavel Matušinsky
Czech J. Genet. Plant Breed., 2011, 47(1):37-40 | DOI: 10.17221/34/2010-CJGPB
The fungus Ramularia collo-cygni is increasingly important as the causal agent of Ramularia leaf spot (RLS), a novel leaf spot disease of barley. The work aimed to identify gene resources suitable for developing new breeding lines of winter barley with improved resistance. During the first experimental period (2001-2005), RLS incidence was monitored in 711 cultivars and advanced breeding lines. Differences were detected in the intensity of symptomatic expression, but no material showed high resistance. During the second experimental period (2006-2009), response to natural RLS infection was evaluated in 19 winter barley cultivars (12 six-row...
Low-linolenic linseed (Linum usitatissimum L.) AllanNew Varieties
E. Tejklová, M. Bjelková
Czech J. Genet. Plant Breed., 2011, 47(1):41-42 | DOI: 10.17221/123/2010-CJGPB
List of field crop varieties registered in the Czech Republic in 2010New Varieties
R. Šafaříková
Czech J. Genet. Plant Breed., 2011, 47(1):43-44 | DOI: 10.17221/13/2011-CJGPB