scholarly journals Breeding groundnut for rust resistance: A review

2018 ◽  
Author(s):  
Happy Daudi ◽  
Hussein Shimelis ◽  
Learnmore Mwadzingeni ◽  
Mark Laing ◽  
Patrick Okori
Keyword(s):  
Marker Assisted Selection ◽  
Rust Resistance ◽  
Resistance Breeding ◽  
Conventional Breeding ◽  
Host Pathogen Interaction ◽  
Genomic Tools ◽  
Groundnut Rust ◽  
Elite Germplasm ◽  
Rust Resistance Genes ◽  
Molecular Makers

Sustainable groundnut production can be realised through development and adoption of high yielding cultivars possessing durable rust resistance. Integrating conventional breeding with genomic tools in identifying candidate rust resistance genes, and introgressing the genes into adapted elite germplasm, with the aid of molecular makers, could enhance breeding for rust resistance. This review highlights breeding approaches for groundnut rust resistance, with emphasis on integrating conventional breeding with marker-assisted selection. The life cycle, symptoms and epidemiology of the pathogen are also discussed to understand the host-pathogen interaction and guide groundnut rust resistance breeding

scholarly journals Reaction of Exotic Soybean Germplasm to Phakopsora pachyrhizi in Uganda

Plant Disease ◽  
2008 ◽  
Vol 92 (11) ◽  
pp. 1493-1496 ◽  
Author(s):  
H. K. Oloka ◽  
P. Tukamuhabwa ◽  
T. Sengooba ◽  
S. Shanmugasundram
Keyword(s):  
Research And Development ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Growth Stage ◽  
Resistance Breeding ◽  
Soybean Rust ◽  
Phakopsora Pachyrhizi ◽  
Moderate Resistance ◽  
Rust Resistance Genes

Host plant resistance is the best long-term strategy for managing soybean rust (Phakopsora pachyrhizi) in endemic areas. Resistance breeding efforts are hampered by the presence of several races of the pathogen that often overcome single resistance genes deployed against them. In Uganda, only two soybean cultivars show moderate resistance to Phakopsora pachyrhizi, but this is likely to break down given the aggressive nature of the pathogen. A total of 25 rust tolerant or resistant accessions were imported from the Asian Vegetable Research and Development Centre and screened at Namulonge, in central Uganda. Only 10 accessions, G 33, G 8527, G8586, G 8587, GC 60020-8-7-7-18, GC 87016-11-B-2, GC 87021-26-B-1, SRE-D-14A, SRE-D-14B, and SS 86045-23-2, showed no rust symptoms at growth stage R6 during the three seasons of testing. Soybean rust resistance genes Rpp1, Rpp3, and Rpp4 did not confer resistance at Namulonge; gene Rpp2 was effective.

scholarly journals DNA marker-assisted selection to pyramid rust resistance genes in “carioca” seeded common bean lines

Euphytica ◽  
2014 ◽  
Vol 199 (3) ◽  
pp. 303-316 ◽  
Author(s):  
Thiago Lívio P. O. Souza ◽  
Vilmar A. Ragagnin ◽  
Suelen N. Dessaune ◽  
Demerson A. Sanglard ◽  
José Eustáquio S. Carneiro ◽  
...  
Keyword(s):  
Common Bean ◽  
Resistance Genes ◽  
Marker Assisted Selection ◽  
Rust Resistance ◽  
Dna Marker ◽  
Rust Resistance Genes

Incorporation of leaf rust resistance genes into winter wheat genotypes using marker-assisted selection

2007 ◽  
Vol 55 (2) ◽  
pp. 149-156 ◽  
Author(s):  
M. Gál ◽  
G. Vida ◽  
A. Uhrin ◽  
Z. Bedő ◽  
O. Veisz
Keyword(s):  
Winter Wheat ◽  
Leaf Rust ◽  
Resistance Genes ◽  
Marker Assisted Selection ◽  
Rust Resistance ◽  
Leaf Rust Resistance ◽  
Wheat Breeding ◽  
Wheat Varieties ◽  
Rust Resistance Genes ◽  
Leaf Rust Resistance Genes

The breeding and cultivation of resistant wheat varieties is an effective way of controlling leaf rust ( Puccinia triticina Eriks.). The use of molecular markers facilitates the incorporation of the major leaf rust resistance genes ( Lr genes) responsible for resistance into new varieties and the pyramiding of these genes. Marker-assisted selection was used to incorporate the Lr genes currently effective in Hungary ( Lr9 , Lr24 , Lr25 , Lr29 ) into winter wheat varieties. The Lr genes were identified using STS, SCAR and RAPD markers closely linked to them. Investigations were made on how these markers could be utilised in plant breeding, and near-isogenic lines resembling the recurrent variety but each containing a different Lr gene were developed to form the initial stock for the pyramiding of resistance genes. The results indicate that the marker-assisted selection technique elaborated for resistance genes Lr24 , Lr25 and Lr29 can be applied simply and effectively in wheat breeding, while the detection of the Lr9 marker is uncertain.

scholarly journals Linkage Maps of Wheat Stripe Rust Resistance Genes Yr5 and Yr15 for Use in Marker-Assisted Selection

Crop Science ◽  
2009 ◽  
Vol 49 (5) ◽  
pp. 1786-1790 ◽  
Author(s):  
Lesley R. Murphy ◽  
Dipak Santra ◽  
Kimberlee Kidwell ◽  
Guiping Yan ◽  
Xianming Chen ◽  
...  
Keyword(s):  
Stripe Rust ◽  
Resistance Genes ◽  
Marker Assisted Selection ◽  
Rust Resistance ◽  
Stripe Rust Resistance ◽  
Linkage Maps ◽  
Wheat Stripe Rust ◽  
Rust Resistance Genes

Characterization of Wheat Stripe Rust Resistance Genes in Shaanmai 139

2010 ◽  
Vol 36 (1) ◽  
pp. 109-114 ◽  
Author(s):  
Hong ZHANG ◽  
Zhi-Long REN ◽  
Yin-Gang HU ◽  
Chang-You WANG ◽  
Wan-Quan JI
Keyword(s):  
Stripe Rust ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Stripe Rust Resistance ◽  
Wheat Stripe Rust ◽  
Rust Resistance Genes

scholarly journals Seedling Stage Resistance of Iranian Bread Wheat Germplasm to Race Ug99 of Puccinia graminis f. sp. tritici

Plant Disease ◽  
2013 ◽  
Vol 97 (3) ◽  
pp. 387-392 ◽  
Author(s):  
Mohsen Mohammadi ◽  
Davoud Torkamaneh ◽  
Mehran Patpour
Keyword(s):  
Resistance Genes ◽  
Stem Rust ◽  
Rust Resistance ◽  
Stem Rust Resistance ◽  
Puccinia Graminis ◽  
Wheat Cultivars ◽  
Breeding Lines ◽  
Wheat Germplasm ◽  
Stem Rust Resistance Genes ◽  
Rust Resistance Genes

Following emergence of Ug99, the new virulent race of Puccinia graminis f. sp. tritici in Africa, a global effort for identification and utilization of new sources of Ug99-resistant germplasm has been undertaken. In this study, we conducted replicated experiments to evaluate the resistance of Iranian wheat germplasm to the TTKSK lineage of the Ug99 race of P. graminis f. sp. tritici. We also evaluated for presence of stem rust resistance genes (i.e., Sr2, Sr24, Sr26, Sr38, Sr39, Sr31, and Sr1RSAmigo) in wheat cultivars and breeding lines widely cultivated in Iran. Our phenotyping data revealed high levels of susceptibility to Ug99 in Iranian bread wheat germplasm. Our genotyping data revealed that Iranian cultivars do not carry Sr24, Sr26, or Sr1RSAmigo. Only a few salt-tolerant cultivars and breeding lines tested positively for Sr2, Sr31, Sr38, or Sr39 markers. In conclusion, the genetic basis for resistance to Ug99 in Iranian wheat cultivars was found to be vulnerable. Acquiring knowledge about existing resistance genes and haplotypes in wheat cultivars and breeding lines will help breeders, cereal pathologists, and policy makers to select and pyramid effective stem rust resistance genes.

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