Template-Type: ReDIF-Article 1.0 Author-Name: Mehdi Saidi Author-Workplace-Name: Department of Horticulture, College of Agriculture, Ilam University, Ilam, Iran Author-Name: Sudhakar Demudhar Warade Author-Workplace-Name: Department of Horticulture, Mahatma Phule Agricultural University, Rahuri, India Title: Tomato breeding for resistance to Tomato spotted wilt virus (TSWV): an overview of conventional and molecular approaches Abstract: The disease caused by Tomato spotted wilt virus (TSWV) belongs to the most destructive diseases of tomato all over the world. Therefore, tomato has been subjected to many breeding efforts, including the incorporation of resistance to the virus. Recently emerged approaches, ideas and technologies could affect the future direction of the virus resistance breeding. In particular molecular techniques have provided opportunities in the form of linked molecular markers to speed up and simplify the selection of host resistance genes. Transformation of an inbred tomato line with the TSWV nucleoprotein gene cassette resulted in high levels of resistance to TSWV that have been retained in the hybrids derived from the parental tomato line. These and other techniques offer great opportunities for improving the virus resistance and, therefore, it is time to reconsider the future direction of resistance breeding in tomato. The effort has been made to review available sources of resistance, conventional breeding methods, marker-assisted selection, pathogen-derived resistance and transgenic resistance approaches in this paper. Keywords: tomato, spotted wilt, TSWV, breeding, resistance Journal: Czech Journal of Genetics and Plant Breeding Pages: 83-92 Volume: 44 Issue: 3 Year: 2008 DOI: 10.17221/47/2008-CJGPB File-URL: http://cjgpb.agriculturejournals.cz/doi/10.17221/47/2008-CJGPB.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjg-200803-0001.txt Handle: RePEc:caa:jnlcjg:v:44:y:2008:i:3:id:47-2008-CJGPB Template-Type: ReDIF-Article 1.0 Author-Name: Lutfor Rahman Author-Workplace-Name: Deptartment of Plant Science, College of Agriculture and Life Sciences, Seoul National University, Seoul, Korea Author-Workplace-Name: Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea Author-Name: Most Sakina Khanam Author-Workplace-Name: Division of Crop Physiology and Quality Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh, Bangladesh Author-Name: Hee-Jong Koh Author-Workplace-Name: Deptartment of Plant Science, College of Agriculture and Life Sciences, Seoul National University, Seoul, Korea Author-Workplace-Name: Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea Title: QTL analysis for yield related traits using populations derived from an indica-japonica hybrid in rice (Oryza sativaL.) Abstract: Introgression has been achieved from a wild species Oryza minuta (2n = 48, BBCC, Acc No.101141) into O. sativa subsp. indica IR71033-121-15. This introgression line was developed at International Rice Research Institute (IRRI) through embryo rescue as well as three backcrosses using IR31917-45-3-2 as a recurrent parent. These two IR lines resemble each other but differ in several important agronomic traits, which can be attributable to O. minuta introgressions. Out of 530 STS markers tested for introgression analysis, at least 14 introgressed chromosomal segments from O. minuta were detected throughout 12 chromosomes. Most of the introgressed segments were quite small in size, as they were detected by single markers and flanking markers were negative for introgressions. A population from the cross between japonica cultivar Junambyeo and introgressed indica line IR71033-121-15, consisting of 146 plants, was evaluated for ten agronomic traits. Genotyping of F2 lines and phenotyping from both F2 and F3 were considered for QTL analysis. A total of 11 single-locus QTLs (S-QTLs) were identified for ten traits, i.e. days to heading (DTH), panicle number (PN), spikelet fertility (SF), panicle length (PL), spikelet per panicle (SPP), grain length (GL), grain width (GW), grain length to width ratio (GLW) and grain thickness (GT) in both populations. The O. minuta derived alleles of QTLs, spp6, gl3, glw3, glw5 and t12 were detected in both populations indicating robust QTLs for these traits. QTLs from O. minuta introgression could be new sources of natural genetic variation for genetic improvement of rice. Keywords: rice, pleiotropic effect, alien introgression, Sequence Tagged Site (STS) markers, Oryza minuta, quantitative trait locus (QTL) Journal: Czech Journal of Genetics and Plant Breeding Pages: 93-104 Volume: 44 Issue: 3 Year: 2008 DOI: 10.17221/16/2008-CJGPB File-URL: http://cjgpb.agriculturejournals.cz/doi/10.17221/16/2008-CJGPB.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjg-200803-0002.txt Handle: RePEc:caa:jnlcjg:v:44:y:2008:i:3:id:16-2008-CJGPB Template-Type: ReDIF-Article 1.0 Author-Name: Zuzana Kocourková Author-Workplace-Name: Plant Breeding Station Stupice, SELGEN, a.s., Stupice, Czech Republic Author-Name: Jana Bradová Author-Workplace-Name: Crop Research Institute, Prague-Ruzyně, Czech Republic Author-Name: Zuzana Kohutová Author-Workplace-Name: Czech University of Life Sciences in Prague, Prague, Czech Republic Author-Name: Lucie Slámová Author-Workplace-Name: Czech University of Life Sciences in Prague, Prague, Czech Republic Author-Name: Pavel Vejl Author-Workplace-Name: Czech University of Life Sciences in Prague, Prague, Czech Republic Author-Name: Pavel Horčička Author-Workplace-Name: Plant Breeding Station Stupice, SELGEN, a.s., Stupice, Czech Republic Title: Wheat breeding for the improved bread-making quality using PCR based markers of glutenins Abstract: The relation between high-molecular-weight (HMW) glutenin subunits and bread-making quality could enable selection for improved bread-making quality in early stages of breeding process. The composition of HMW glutenin subunits was investigated in F2 and F7 progenies derived from the cross between winter wheat varieties Sulamit and Clever. The presence of Glu-A1 (AxNull and Ax1), Glu-B1 (Bx6+By8 and Bx 17+By18) and Glu-D1 alleles (x 5+Dy10 and Dx 2+Dy12) was monitored using a PCR based assay. Segregation of alleles corresponded with the theoretically assumed 1:2:1 Mendelian ratio in F2 generation, however, the values of χ2-test in F7 generation indicated a strong affection of allelic frequencies by the breeding process. Significant variation was also observed in Glu-1 score frequency between F2 and F7 generation. These changes were probably caused by deliberate phenotypic selection for important agronomical traits. SDS and Zeleny sedimentation tests, mixographic parameter breakdown and HMW glutenin composition were analyzed in F7 to reveal the effects of different combinations of HMW glutenin alleles on the bread-making quality characters. The results showed statistically significant differences in the contribution of HMW glutenin alleles. In general, the alleles Ax1, Bx17+By18 and Dx5+Dy 10 can be considered as markers of good baking quality. The data presented in this paper suggest that heterozygous constitution may also have a positive effect on bread-making quality. Keywords: bread-making quality, breeding, glutenin subunits, MAS, winter wheat Journal: Czech Journal of Genetics and Plant Breeding Pages: 105-113 Volume: 44 Issue: 3 Year: 2008 DOI: 10.17221/20/2008-CJGPB File-URL: http://cjgpb.agriculturejournals.cz/doi/10.17221/20/2008-CJGPB.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjg-200803-0003.txt Handle: RePEc:caa:jnlcjg:v:44:y:2008:i:3:id:20-2008-CJGPB Template-Type: ReDIF-Article 1.0 Author-Name: Leonor Caballero Author-Workplace-Name: Department of Genetics, University of Córdoba, Córdoba, Spain Author-Name: Luis M. Martín Author-Workplace-Name: Department of Genetics, University of Córdoba, Córdoba, Spain Author-Name: Juan B. Alvarez Author-Workplace-Name: Department of Genetics, University of Córdoba, Córdoba, Spain Title: Relationships between the HMW- and LMW-glutenin subunits and SDS-sedimentation volume in Spanish hulled wheat lines Abstract: Emmer and spelt are two hulled wheats that were widely grown in Spain until the latter 1960s. Twenty-nine emmer and twenty-six spelt lines obtained from Spanish accessions of these hulled wheats were analysed for quality traits and endosperm storage protein composition. The results showed a wide range of variability in these traits. Likewise, a certain association between some alleles of these proteins and the SDS-sedimentation volume has been detected. Keywords: emmer wheat, genetic resources, bread-making quality, spelt wheat Journal: Czech Journal of Genetics and Plant Breeding Pages: 114-117 Volume: 44 Issue: 3 Year: 2008 DOI: 10.17221/8/2008-CJGPB File-URL: http://cjgpb.agriculturejournals.cz/doi/10.17221/8/2008-CJGPB.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjg-200803-0004.txt Handle: RePEc:caa:jnlcjg:v:44:y:2008:i:3:id:8-2008-CJGPB Template-Type: ReDIF-Article 1.0 Author-Name: I. Bareš Title: Prof. Ing. ANTONIN KOVÁČIK, DrSc. Journal: Czech Journal of Genetics and Plant Breeding Pages: 119-120 Volume: 44 Issue: 3 Year: 2008 DOI: 10.17221/54/2008-CJGPB File-URL: http://cjgpb.agriculturejournals.cz/doi/10.17221/54/2008-CJGPB.html File-Format: text/html Handle: RePEc:caa:jnlcjg:v:44:y:2008:i:3:id:54-2008-CJGPB Template-Type: ReDIF-Article 1.0 Author-Name: L. Bobková Author-Name: M. Hromádko Title: Winter wheat Bohemia Journal: Czech Journal of Genetics and Plant Breeding Pages: 121-122 Volume: 44 Issue: 3 Year: 2008 DOI: 10.17221/60/2008-CJGPB File-URL: http://cjgpb.agriculturejournals.cz/doi/10.17221/60/2008-CJGPB.html File-Format: text/html Handle: RePEc:caa:jnlcjg:v:44:y:2008:i:3:id:60-2008-CJGPB Template-Type: ReDIF-Article 1.0 Author-Name: R. Tyller Author-Name: V. Tyller Author-Name: I. Macháčková Title: Red clover Bonus Journal: Czech Journal of Genetics and Plant Breeding Pages: 123-124 Volume: 44 Issue: 3 Year: 2008 DOI: 10.17221/52/2008-CJGPB File-URL: http://cjgpb.agriculturejournals.cz/doi/10.17221/52/2008-CJGPB.html File-Format: text/html Handle: RePEc:caa:jnlcjg:v:44:y:2008:i:3:id:52-2008-CJGPB Template-Type: ReDIF-Article 1.0 Author-Name: R. Tyller Author-Name: V. Tyller Author-Name: I. Macháčková Title: Red clover Garant Journal: Czech Journal of Genetics and Plant Breeding Pages: 125-126 Volume: 44 Issue: 3 Year: 2008 DOI: 10.17221/53/2008-CJGPB File-URL: http://cjgpb.agriculturejournals.cz/doi/10.17221/53/2008-CJGPB.html File-Format: text/html Handle: RePEc:caa:jnlcjg:v:44:y:2008:i:3:id:53-2008-CJGPB Template-Type: ReDIF-Article 1.0 Author-Name: R. Šafaříková Title: List of field crop varieties registered in the Czech Republic in 2007 Journal: Czech Journal of Genetics and Plant Breeding Pages: 127-128 Volume: 44 Issue: 3 Year: 2008 DOI: 10.17221/55/2008-CJGPB File-URL: http://cjgpb.agriculturejournals.cz/doi/10.17221/55/2008-CJGPB.html File-Format: text/html Handle: RePEc:caa:jnlcjg:v:44:y:2008:i:3:id:55-2008-CJGPB