A gene for hybrid necrosis in an inbred line of rye (Secale cereale L.)

Scoles, G. J.

doi:10.1007/bf00022881

Cited by 9 publications

(7 citation statements)

References 11 publications

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“…Determining the location of the complementary gene of triticale in this study, whether in the B genome or in the R genome, is not possible by means of testcross, unless parentages of the triticale lines were known; therefore, we assumed that the Ne1s allele in the triticale lines used in this study was located in the B genome. The distribution of necrosis alleles in rye is not well documented, but many cultivars are suspected to be heterogeneous for different alleles of the necrosis genes (Scoles 1985;Ren and Lelley 1989). We crossed some of the most winterhardy open pollinated cultivars of rye (Cougar, Gauthier, Kustro, Puma) with winter wheats carrying the Ne2 alleles, but observed no symptom of necrosis (unpublished data).…”

Section: Expression Of Necrosis In Wheat × × Triticale Hybridsmentioning

confidence: 99%

“…The study of hybrid necrosis in crosses with triticale is complicated by the occasional presence of an additional pair of genes (Ner1 and Ner2) on the R genome, which can interact with genes on the B genome to cause hybrid necrosis (Scoles 1985;Ren and Lelley 1989). Determining the location of the complementary gene of triticale in this study, whether in the B genome or in the R genome, is not possible by means of testcross, unless parentages of the triticale lines were known; therefore, we assumed that the Ne1s allele in the triticale lines used in this study was located in the B genome.…”

Section: Expression Of Necrosis In Wheat × × Triticale Hybridsmentioning

confidence: 99%

“…Two additional genes, Ner 1 and Ner 2 , were identified in rye and cause hybrid necrosis in triticale by interacting with necrosis genes of the B genome (Scoles 1985;Ren and Lelley 1989).…”

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Hybrid necrosis as a barrier to gene transfer in hexaploid winter wheat × triticale crosses

Bizimungu¹,

Collin²,

Comeau³

et al. 1998

Can. J. Plant Sci.

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. 1998. Hybrid necrosis as a barrier to gene transfer in hexaploid winter wheat × × triticale crosses. Can. J. Plant Sci. 78: 239-244. An interspecific wheat × triticale hybridization program was initiated with the scope of widening and improving the winter wheat gene pool. However, progress was hampered by severe necrosis that caused the death of F 1 hybrids from crosses between the most winterhardy wheat and triticale cultivars. This paper describes hybrid necrosis as the main barrier to gene transfer between winter wheat cultivars Borden, Augusta and Ruby, and hexaploid winter triticales OAC Wintri and K9-6. Crosses with tester lines revealed that the three winter wheats were carriers of the necrotic Ne2 allele. High temperature (30°C) treatment until heading stage permitted to only partially circumvent the problem. A study of cross direction effects at the backcross level showed that the conventional method (F 1 × wheat) was more efficient for plant recovery, but plants produced by the alternative backcross system (wheat × F 1 ) were more self-fertile. Within the most winterhardy germplasm, hybrid necrosis is a major problem for transferring genes between winter wheat and triticale. The use of non-necrotic winter wheat lines such as MC11N, a local winter wheat selection, may have a special value as a bridge to circumvent the necrosis problem. jusqu'à l'épiaison n'a permis de contourner le problème que partiellement. Une étude de la direction du croisement au niveau du rétrocroisement a montré que la méthode conventionnelle (F 1 × blé) était plus efficace pour la récupération de plantes, mais que les plantes produites par la méthode alternative (blé × F 1 ) étaient plus auto-fertiles. Parmi le germoplasme le plus rustique, la nécrose hybride est un problème important pour le transfert de gènes entre le blé et le triticale d'hiver. L'utilisation de lignées de blé d'hiver non nécrosantes comme MC11N, une sélection locale de blé d'hiver, pourrait être utile comme pont pour contourner le problème de nécrose.

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Section: Expression Of Necrosis In Wheat × × Triticale Hybridsmentioning

confidence: 99%

Section: Expression Of Necrosis In Wheat × × Triticale Hybridsmentioning

confidence: 99%

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Hybrid necrosis as a barrier to gene transfer in hexaploid winter wheat × triticale crosses

Bizimungu¹,

Collin²,

Comeau³

et al. 1998

Can. J. Plant Sci.

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“…The hexaploid wheat cultivar 'Siesta F was provided by Dr. SCOLES (1985); this line carries the gene Ne2m. In addition, the bread wheat cv.…”

Section: Methodsmentioning

confidence: 99%

Genetics of Hybrid Necrosis in Rye

Ren

Lelley

1988

Plant Breeding

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In dipioid rj--e, two genes were detected which cause hybrid necrosis by compiementar}' action if both are present in dominant condition. Moreover, the,se genes cause hybrid necrosis in tnticale complementing with either one of the two genes, Nel and Nel, which are known to cause hybrid necrosis m wheat. It is suggested, that the two genes in rye are named Nerl and Ner2 corresponding to the wheat gene with which they complement in triticaie. The consequences of the presence of necrosis genes in rj-e popuiations for breeding of r^'e are discussed.

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“…Recently, two genes were found that cause hybrid necrosis in rye in a similar complementary way as Nel and Ne2 do in wheat. Because in addition to their effect in rye, these two genes condition hybrid necrosis in triticale by a dominant complementary interaction with the respective wheat genes of the B genome (Jung and Lelley 1985;Scoles 1985;Ren and Lelley 1989), they were named Nerl and Ner2 (Ren and Lelley 1988).…”

Section: Introductionmentioning

confidence: 99%

Chromosomal localization of genes in the R genome causing hybrid necrosis in rye and triticale

Ren¹,

Lelley²

1990

Genome

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REN, Z. L., and LELLEY, T. 1990. Chromosomal localization of genes in the R genome causing hybrid necrosis in rye and triticale. Genome, 33: 40-43. By using a set of primary hexaploid triticale lines monosomic for each of the seven rye chromosomes and with the help of a complete series of monosomic wheat-rye addition lines the two genes Nerl and Ner2 were chromosomally localized in the rye genome. These two genes condition hybrid necrosis in rye through a dominant complementary interaction. Interacting with the corresponding necrosis genes in the B genome of wheat, Nel and Ne2, these two genes in rye also cause hybrid necrosis in triticale. The Nerl locus was localized on the long arm of chromosome 5R and the Ner2 locus on the long arm of chromosome 7R. The results provide further evidence for a strong phylogenetic relationship of these two cereal species. of genes in the R genome causing hybrid necrosis in rye and triticale. Genome, 33 : 40-43. A partir d'un groupe de lignees hexaploi'des primaires, monosomiques pour chacun des sept chromosomes du seigle, et a I'aide de series completes de lignees d'addition monosomiques ble-seigle, les deux genes Nerl et Ner2 ont ete localises dans des chromosomes du genome du seigle. Ces deux genes conditionnent les necroses chez les hybrides du seigle, par une interaction complementaire dominante. Comme ils interagissent avec les genes necrologiques correspondants du genome B du ble, Nel et Ne2, ces deux genes du seigle causent egalement des necroses chez les hybrides de triticale. Le locus de Nerl a ete localise sur le bras long du chromosome 5R et celui de Ner2, sur le bras long du chromosome 7R. Ces resultats apportent une evidence additionnelle de la forte relation phylogenetique entre ces deux especes cerealieres.

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A gene for hybrid necrosis in an inbred line of rye (Secale cereale L.)

Cited by 9 publications

References 11 publications

Hybrid necrosis as a barrier to gene transfer in hexaploid winter wheat × triticale crosses

Hybrid necrosis as a barrier to gene transfer in hexaploid winter wheat × triticale crosses

Genetics of Hybrid Necrosis in Rye

Chromosomal localization of genes in the R genome causing hybrid necrosis in rye and triticale

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