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A century of wheat breeding in Brazil: the origin and inheritance of the Lr34 locus in wheat varieties released from 1922 to 2016. Repositório Alice
CHAVES, M. S.; SILVA, G. B. da; CAIERAO, E.; FEDERIZZI, L. C.; MARTINELLI, J. A..
Abstract: Wheat breeding in Brazil began in 1919. A cross between the varieties Fronteira and Mentana gave rise to Frontana, the most popular ever released, being recommended for more than 40 years. Frontana played an important role as a source of resistance to leaf and stripe rust as well as resistance to preharvest sprouting. Possessing an early maturity cycle, it contributed to change the predominant varietal pattern at that time. The resistance gene Lr34 was first described in Frontana. The gene confers durable adult plant resistance to leaf rust and other biotrophic fungi. Because of its durability, stability across environments, haplotype diversity and wide geographical distribution, Lr34 is probably the most important single resistance gene in...
Tipo: Artigo de periódico Palavras-chave: Diagnostic molecular markers; Adult plant resistance; KASPar; Leaf rust.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1122054
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A century of wheat breeding in Brazil: the origin and inheritance of the Lr34 locus in wheat varieties released from 1922 to 2016. Repositório Alice
CHAVES, M. S.; SILVA, G. B. da; CAIERAO, E.; FEDERIZZI, L. C.; MARTINELLI, J. A..
Abstract: Wheat breeding in Brazil began in 1919. A cross between the varieties Fronteira and Mentana gave rise to Frontana, the most popular ever released, being recommended for more than 40 years. Frontana played an important role as a source of resistance to leaf and stripe rust as well as resistance to preharvest sprouting. Possessing an early maturity cycle, it contributed to change the predominant varietal pattern at that time. The resistance gene Lr34 was first described in Frontana. The gene confers durable adult plant resistance to leaf rust and other biotrophic fungi. Because of its durability, stability across environments, haplotype diversity and wide geographical distribution, Lr34 is probably the most important single resistance gene in...
Tipo: Artigo de periódico Palavras-chave: Diagnostic molecular markers; Adult plant resistance; KASPar; Leaf rust.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1121808
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Genetic characterization of leaf and stripe rust resistance in the Brazilian wheat cultivar toropi. Repositório Alice
ROSA, S. B.; ZANELLA, C. M.; HIEBERT, C. W.; BRULE-BABEL, A. L.; RANDHAWA, H. S.; SHORTER, S.; BOYD, L. A.; MCCALLUM, B. D.; BRAMMER, S. P..
Leaf and stripe rust are major threats to wheat production worldwide. The effective, multiple rust resistances present in the Brazilian cultivar Toropi makes it an excellent choice for a genetic study of rust resistance. Testing of DNA from different seed lots of Toropi with 2,194 polymorphic 90K iSelect single nucleotide polymorphism markers identified significant genetic divergence, with as much as 35% dissimilarity between seed lots. As a result, further work was conducted with a single plant line derived from Toropi variant Toropi-6.4. A double haploid population with 168 lines derived from the cross Toropi-6.4 × Thatcher was phenotyped over multiple years and locations in Canada, New Zealand, and Kenya, with a total of seven field trials undertaken...
Tipo: Artigo de periódico Palavras-chave: Adult plant resistance; Durable resistance; QTL; Leaf rust; Stripe rust; Wheat.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1137644
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Glutenin analysis for the safe screening of self-pollinated wheat seeds when developing doubled-haploid populations PAB
Torres,Gisele Abigail Montan; Scagliusi,Sandra Maria Mansur; Chaves,Márcia Soares; Consoli,Luciano.
Abstract: The objective of this work was to apply glutenin analysis, as a simple and reliable method, to identify self-pollinated wheat (Triticum aestivum) seeds in F1 crosses, when developing mapping populations using doubled-haploid (DH) technology. F1 seeds were subjected to glutenin analyses using gel electrophoresis, to verify and confirm their heterozygotic profiles. Glutenin analyses were carried out using one half of the endosperm of each of the 87 F1 seeds. The other half of the endosperm was used to develop the mapping population through DHs. Plants with band patterns different from the expected ones were discarded. Although the incidence of self-pollinated seeds was relatively low (only 8%), the screening of F1 heterozygotic profiles is...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Puccinia recondita f. sp. tritici; Triticum aestivum; Adult plant resistance; Leaf rust; Microspore culture; Toropi wheat cultivar.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000500646
Registros recuperados: 4
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