Genetic diversity of 46 azerbaijani durum wheat (triticum durum l.) Genotypes were screened using... more Genetic diversity of 46 azerbaijani durum wheat (triticum durum l.) Genotypes were screened using simple sequence repeats (ssrs). These accessions were collected from various bioclimatic regions of azerbaijan. Out of the used twenty-two primers, 13 primers showed polymorphism and were selected for the analyses. Among the genotypes under study, 31 alleles were detected. Highest number of alleles was detected in locus gwm 335 (on chromosome 5b) and on locus gwm 445 (on chromosome 2a) with 5 and 4 alleles, respectively. The lowest number of alleles was determined in locus gwm 617 with only 1 allele. For a, b and d genomes, the total number of alleles detected were 14, 15 and 2, respectively. Pic value between studied ssr markers was 0.912 and this result shows high genetic diversity between azerbaijani durum wheat genotypes. Therefore, these primers can be recommended for studying genetic diversity of azerbaijani durum wheat accessions. The genetic structure of the genotypes was analyz...
Ascochyta blight (AB), caused by the fungal pathogen Ascochyta rabiei, is a devastating foliar di... more Ascochyta blight (AB), caused by the fungal pathogen Ascochyta rabiei, is a devastating foliar disease of chickpea (Cicer arietinum L.). The genotyping-by-sequencing (GBS)-based approach was deployed for mapping QTLs associated with AB resistance in chickpea in two recombinant inbred line populations derived from two crosses (AB3279 derived from ILC 1929 × ILC 3279 and AB482 derived from ILC 1929 × ILC 482) and tested in six different environments. Twenty-one different genomic regions linked to AB resistance were identified in regions CalG02 and CalG04 in both populations AB3279 and AB482. These regions contain 1,118 SNPs significantly associated with AB resistance (p ≤ 0.001), which explained 11.2–39.3% of the phenotypic variation (PVE). Nine of the AB resistance-associated genomic regions were newly detected in this study, while twelve regions were known from previous AB studies. The proposed physical map narrows down AB resistance to consistent genomic regions identified across d...
Ascochyta blight (AB), caused by the fungal pathogen Ascochyta rabiei, is a devastating foliar di... more Ascochyta blight (AB), caused by the fungal pathogen Ascochyta rabiei, is a devastating foliar disease of chickpea (Cicer arietinum L.). The genotyping-by-sequencing (GBS)-based approach was deployed for mapping QTLs associated with AB resistance in chickpea in two recombinant inbred line populations derived from two crosses (AB3279 derived from ILC 1929 × ILC 3279 and AB482 derived from ILC 1929 × ILC 482) and tested in six different environments. Twenty-one different genomic regions linked to AB resistance were identified in regions CalG02 and CalG04 in both populations AB3279 and AB482. These regions contain 1,118 SNPs significantly associated with AB resistance (p ≤ 0.001), which explained 11.2–39.3% of the phenotypic variation (PVE). Nine of the AB resistance-associated genomic regions were newly detected in this study, while twelve regions were known from previous AB studies. The proposed physical map narrows down AB resistance to consistent genomic regions identified across different environments. Gene ontology (GO) assigned these QTLs to 319 genes, many of which were associated with stress and disease resistance, and with most important genes belonging to resistance gene families such as leucine-rich repeat (LRR) and transcription factor families. Our results indicate that the flowering-associated gene GIGANTEA is a possible key factor in AB resistance in chickpea. The results have identified AB resistance-associated regions on the physical genetic map of chickpea and allowed for the identification of associated markers that will help in breeding of AB-resistant varieties.
Hamwieh, A., F. Alo, S. Ahmed. 2018. Molecular Tools Developed for Disease Resistant Genes in Whe... more Hamwieh, A., F. Alo, S. Ahmed. 2018. Molecular Tools Developed for Disease Resistant Genes in Wheat, Barley, Lentil and Chickpea: A Review. Arab Journal of Plant Protection, 36(1): 50-56. The major objective of using molecular tools by the plant pathologists is to identify markers linked to the resistant genes. The best markers are those located within the genes or tightly linlked to the resistant genes. This paper will review the most recent markers/QTL linked to resistant genes reported in wheat (strip rust, leaf rust, and stem rust), barley (stripe rust, leaf rust, and stem rust), lentil (Fusarium wilt, Ascochyta, Anthracnose and Stemphylium blight) and chickpea (Ascochyta blight and Fusarium wilt). The markers tightly linked to the resistant genes could be used as markers assisted selection in the breeding program to improve effectiveness and efficiency of variety
SUMMARYStripe rust, caused byPuccinia striiformisf. sp.tritici(Pst), is a major wheat disease tha... more SUMMARYStripe rust, caused byPuccinia striiformisf. sp.tritici(Pst), is a major wheat disease that can inflict yield losses of up to 70% on susceptible varieties under favourable environmental conditions. The timely identification of plant genetic resources likely to possess novel resistance to this disease would facilitate the rapid development of resistant wheat varieties. The focused identification of germplasm strategy (FIGS) approach was used to predict stripe rust resistance in a collection of wheat landraces conserved at ICARDA genebank. Long-term climate data for the collection sites, from which these accessions originated and stripe rust evaluation scores for one group of accessions were presented to three different non-linear models to explore the trait×collection site environment interactions. Patterns in the data detected by the models were used to predict stripe rust resistance in a second and different set of accessions. The results of the prediction were then tested a...
Genetic diversity of 46 azerbaijani durum wheat (triticum durum l.) Genotypes were screened using... more Genetic diversity of 46 azerbaijani durum wheat (triticum durum l.) Genotypes were screened using simple sequence repeats (ssrs). These accessions were collected from various bioclimatic regions of azerbaijan. Out of the used twenty-two primers, 13 primers showed polymorphism and were selected for the analyses. Among the genotypes under study, 31 alleles were detected. Highest number of alleles was detected in locus gwm 335 (on chromosome 5b) and on locus gwm 445 (on chromosome 2a) with 5 and 4 alleles, respectively. The lowest number of alleles was determined in locus gwm 617 with only 1 allele. For a, b and d genomes, the total number of alleles detected were 14, 15 and 2, respectively. Pic value between studied ssr markers was 0.912 and this result shows high genetic diversity between azerbaijani durum wheat genotypes. Therefore, these primers can be recommended for studying genetic diversity of azerbaijani durum wheat accessions. The genetic structure of the genotypes was analyz...
Ascochyta blight (AB), caused by the fungal pathogen Ascochyta rabiei, is a devastating foliar di... more Ascochyta blight (AB), caused by the fungal pathogen Ascochyta rabiei, is a devastating foliar disease of chickpea (Cicer arietinum L.). The genotyping-by-sequencing (GBS)-based approach was deployed for mapping QTLs associated with AB resistance in chickpea in two recombinant inbred line populations derived from two crosses (AB3279 derived from ILC 1929 × ILC 3279 and AB482 derived from ILC 1929 × ILC 482) and tested in six different environments. Twenty-one different genomic regions linked to AB resistance were identified in regions CalG02 and CalG04 in both populations AB3279 and AB482. These regions contain 1,118 SNPs significantly associated with AB resistance (p ≤ 0.001), which explained 11.2–39.3% of the phenotypic variation (PVE). Nine of the AB resistance-associated genomic regions were newly detected in this study, while twelve regions were known from previous AB studies. The proposed physical map narrows down AB resistance to consistent genomic regions identified across d...
Ascochyta blight (AB), caused by the fungal pathogen Ascochyta rabiei, is a devastating foliar di... more Ascochyta blight (AB), caused by the fungal pathogen Ascochyta rabiei, is a devastating foliar disease of chickpea (Cicer arietinum L.). The genotyping-by-sequencing (GBS)-based approach was deployed for mapping QTLs associated with AB resistance in chickpea in two recombinant inbred line populations derived from two crosses (AB3279 derived from ILC 1929 × ILC 3279 and AB482 derived from ILC 1929 × ILC 482) and tested in six different environments. Twenty-one different genomic regions linked to AB resistance were identified in regions CalG02 and CalG04 in both populations AB3279 and AB482. These regions contain 1,118 SNPs significantly associated with AB resistance (p ≤ 0.001), which explained 11.2–39.3% of the phenotypic variation (PVE). Nine of the AB resistance-associated genomic regions were newly detected in this study, while twelve regions were known from previous AB studies. The proposed physical map narrows down AB resistance to consistent genomic regions identified across different environments. Gene ontology (GO) assigned these QTLs to 319 genes, many of which were associated with stress and disease resistance, and with most important genes belonging to resistance gene families such as leucine-rich repeat (LRR) and transcription factor families. Our results indicate that the flowering-associated gene GIGANTEA is a possible key factor in AB resistance in chickpea. The results have identified AB resistance-associated regions on the physical genetic map of chickpea and allowed for the identification of associated markers that will help in breeding of AB-resistant varieties.
Hamwieh, A., F. Alo, S. Ahmed. 2018. Molecular Tools Developed for Disease Resistant Genes in Whe... more Hamwieh, A., F. Alo, S. Ahmed. 2018. Molecular Tools Developed for Disease Resistant Genes in Wheat, Barley, Lentil and Chickpea: A Review. Arab Journal of Plant Protection, 36(1): 50-56. The major objective of using molecular tools by the plant pathologists is to identify markers linked to the resistant genes. The best markers are those located within the genes or tightly linlked to the resistant genes. This paper will review the most recent markers/QTL linked to resistant genes reported in wheat (strip rust, leaf rust, and stem rust), barley (stripe rust, leaf rust, and stem rust), lentil (Fusarium wilt, Ascochyta, Anthracnose and Stemphylium blight) and chickpea (Ascochyta blight and Fusarium wilt). The markers tightly linked to the resistant genes could be used as markers assisted selection in the breeding program to improve effectiveness and efficiency of variety
SUMMARYStripe rust, caused byPuccinia striiformisf. sp.tritici(Pst), is a major wheat disease tha... more SUMMARYStripe rust, caused byPuccinia striiformisf. sp.tritici(Pst), is a major wheat disease that can inflict yield losses of up to 70% on susceptible varieties under favourable environmental conditions. The timely identification of plant genetic resources likely to possess novel resistance to this disease would facilitate the rapid development of resistant wheat varieties. The focused identification of germplasm strategy (FIGS) approach was used to predict stripe rust resistance in a collection of wheat landraces conserved at ICARDA genebank. Long-term climate data for the collection sites, from which these accessions originated and stripe rust evaluation scores for one group of accessions were presented to three different non-linear models to explore the trait×collection site environment interactions. Patterns in the data detected by the models were used to predict stripe rust resistance in a second and different set of accessions. The results of the prediction were then tested a...
Uploads
Papers by fida ALO