1601: Greenhouse screening for Fusarium wilt resistance in lupine
(2002) Greenhouse screening for Fusarium wilt resistance in lupine . Paper presented at Proceedings of the 10' international lupin conference, Island, 19-24 June 2002.*
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Summary
Fusarium wilt can cause total crop failure. Evaluation of Ffusarium resistance in heavily infected soil were performed in a grenhouse where the dominant fusarium species in the soil in descending order was F. oxysporum then F. avenaceum, F. culmorum, F. solani, F. gibbosum. Large fusarium wilt presure was observed and fully susceptible lines were completely destroyed by Fusarium wilt caused by F. oxisporum. Segregation in F2 and F3 in L. angustifolius showed that resistant genotypes have two dominant non-allelic resistance genes to wilt. We call this gene Relation to fusarium oxisporum (Rfo1,Rfo2). Susceptible genotypes have either two wild genes (++ ++) or one wild and one dominant resistant gene (++ Rfo2 Rfo2, or Rfo1Rfo1 ++). Crossing ‘++ Rfo2Rfo2’ to ‘Rfo1Rfo1 ++’ segregates in 9:7 resistant to susceptible in F2, respectively. The same segregation was observed by crossing ‘Rfo1Rfo1 Rfo2Rfo2’ to ‘++ ++’. We recommend the use of these resistant genes in breeding in areas with potential Fusarium wilt problems.
| Document Language: | English |
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| Keywords: | Fusarium resistance, Lupin angustifolius, albus and luteus, inheritance. Fusarium resistance, Lupin angustifolius, albus and luteus, inheritance |
| Subject Areas: | Crop husbandry > Breeding, genetics and propagation |
| Research affiliation: | Denmark > DARCOF II (2000-2005) > VI.4 (GRAINLEG) Grain legumes for organic farming ... |
| Funding Part: | 25-75% |
| Orgprints ID Number: | 1601 |
| Contact: | Jørnsgård, Ass.prof. Bjarne |
| Deposited On: | 08 October 2003 |
| EPrint Type: | Conference paper |
| Published?: | In Press |
| Peer Review Status: | Peer-reviewed and accepted |
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