New soybean (Glycine max Fabales, Fabaceae) sources of qualitative genetic resistance to Asian soybean rust caused by Phakopsora pachyrhizi (Uredinales, Phakopsoraceae)
| Autor: | Larissa Di Cássia Laperuta, Aliny Simony Ribeiro, Marcelo Fernandes de Oliveira, José Francisco Ferraz de Toledo, Wilmar Ferreira Lima, J. U. V. Moreira, Pedro Henrique Braga Pierozzi, Carlos Alberto Arrabal Arias, Breno Francovig Rachid |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
disease resistance
Phakopsora pachyrhizi lcsh:QH426-470 genetic structures biology fungi food and beverages Fabaceae Plant disease resistance biology.organism_classification Major gene Diallel cross major genes lcsh:Genetics Agronomy genetic inheritance Genotype Genetics Cultivar Fabales Molecular Biology |
| Zdroj: | Genetics and Molecular Biology, Vol 31, Iss 2, Pp 505-511 (2008) Genetics and Molecular Biology v.31 n.2 2008 Genetics and Molecular Biology Sociedade Brasileira de Genética (SBG) instacron:SBG Genetics and Molecular Biology, Volume: 31, Issue: 2, Pages: 505-511, Published: 2008 |
| ISSN: | 1415-4757 |
| Popis: | Asian soybean rust (ASR), caused by the phytopathogenic fungi Phakopsora pachyrhizi, has caused large reductions in soybean (Glycine max) yield in most locations in Brazil where it has occurred since it was first reported in May 2001. Primary efforts to combat the disease involve the development of resistant cultivars, and four dominant major genes (Rpp1, Rpp2, Rpp3 and Rpp4) controlling resistance to ASR have been reported in the literature. To develop new long-lasting soybean ASR resistance genes, we used field experiments to assess ASR leaf lesion type in 11 soybean genotypes (BR01-18437, BRS 184, BRS 231, BRS 232, BRSGO Chapadões, DM 339, Embrapa 48, PI 200487, PI 230970, PI 459025-A and PI 200526) and the 55 F2 generations derived from their biparental diallel crosses. The results indicated that PI 200487 and PI 200526 carry different dominant resistance major genes which are both different from Rpp2 through Rpp4. Furthermore, resistance to ASR in BR01-18437 is controlled by a single recessive major gene, also different from Rpp1 through Rpp4 and different from the genes in PI 200487 and PI 200526. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|