Genetic mapping of cytological and isozyme markers on chromosomes 1R, 3R, 4R and 6R of rye

Alonso‐Blanco, Carlos; Goicoechea, P. G.; Roca, A.; Alvarez, E.; Giráldez, R.

doi:10.1007/bf00225899

Cited by 10 publications

(2 citation statements)

References 21 publications

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“…It is currently unknown where the exact breakpoints are on 6R which demarcate the translocation breakpoints of the 7R, 3R, and 6R segments. Alonso‐Blanco et al (1994) stated that the 3R and 7R segments on the 6R chromosome of their study represented 25 to 30% of the distal length of the 6RL chromosome arm. Studies are underway to determine this using the current deletion lines.…”

Section: Discussionmentioning

confidence: 93%

Deletion Mapping of a Nematode Resistance Gene on Rye Chromosome 6R in Wheat

et al. 2001

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Four deletion mutants of rye chromosome 6R were identified in progeny of wheat (Triticum aestivum L.) lines of ph1bph1b genotype and monosomic for chromosome 6R. The rye chromosome carried a resistance gene against the cereal cyst nematode (CCN) (Heterodera avenae Woll.) and this chromosome originated in triticale line T‐701 (× Triticosecale Witt.). The deletion mutants were selected on the basis of dissociation of three isozyme loci on the long arm of the rye (Secale cereale L.) chromosome. Three plants and their progeny showed expression of the rye genes α‐Amy‐R1 and Got‐R2 but lacked the gene PgdR2 The other plant and its progeny showed expression of the α‐Amy‐R1 gene while the genes Got‐R2 and PgdR2 were absent. The four deletion chromosomes displayed long‐arm terminal deficiencies of different sizes which enabled mapping of the rye isozyme genes and the CCN resistance gene. The distal to proximal order of the 6R isozyme loci was found to be: PgdR2, Got‐R2, and then α‐Amy‐R1 Bioassay tests demonstrated that the CCN resistance gene (CreR) was located on an interstitial section of the long arm of 6R adjacent to Got‐R2

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Section: Discussionmentioning

confidence: 93%

Deletion Mapping of a Nematode Resistance Gene on Rye Chromosome 6R in Wheat

et al. 2001

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“…Most of them are restriction fragment length polymorphism (RFLP) markers, along with a few A(amplified)FLP, isozyme, protein and randomly amplified polymorphic DNA (RAPD) markers and a single simple sequence repeat (SSR) marker. Cytological and genetic maps have revealed that the majority of these molecular markers are located in the distal region of the 1RS chromosome arm (Alonso-Blanco et al 1994;. Ma et al (2001) concluded that no polymorphic marker is available between the centromere and the Cband designated as C1-1RS.…”

Section: Introductionmentioning

confidence: 99%

Genetic and physical mapping of sequence-specific amplified polymorphic (SSAP) markers on the 1RS chromosome arm of rye in a wheat background

Nagy

Lelley

2003

Theor Appl Genet

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Three rye-specific repeated sequences, pSc10C, pSc20H and R173-1, were used to design sequence-specific anchored primers. These primers and 16 restriction site-specific adaptor primers were used in all possible combinations to establish sequence-specific amplified polymorphic (SSAP) markers for the 1RS chromosome arm of rye in a wheat background. Thirty 1RS-specific SSAP markers were detected in 19 primer combinations. Along with six markers localised previously on 1RS, 26 of the SSAP markers were mapped genetically in wheat genotypes carrying recombinant 1BL.1RS translocations. A clear decrease in recombination frequency from distal to proximal regions was observed. Wheat-rye addition lines for the 1R chromosome with different-sized deletions of the short arm were used to physically localise these markers. Physical mapping suggested an even distribution of the SSAP markers along the total length of the 1RS chromosome arm.

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Genetic variation in germplasm accessions of Secale vavilovii Grossh

Meier

Kunzmann

Zeller

1996

Genet Resour Crop Evol

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The accurate identification and classification of wild species enhance the utilization of potential plant genetic resources_ The wild rye species Secale vavilovii Grossh. may serve to broaden the genetic variation in cultivated rye, S. cereale. The combined analyses of cytological, isozymic and other genetic characteristics in the present study revealed that of the fourteen rye accessions designated as S_ vavilovii, only three accessions were correctly classified. Thus it is essential to increase multidisciplinary, international research and collaboration to aid in the classification and utilization of the yet untapped plant germplasm.

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Genetic mapping of cytological and isozyme markers on chromosomes 1R, 3R, 4R and 6R of rye

Cited by 10 publications

References 21 publications

Deletion Mapping of a Nematode Resistance Gene on Rye Chromosome 6R in Wheat

Deletion Mapping of a Nematode Resistance Gene on Rye Chromosome 6R in Wheat

Genetic and physical mapping of sequence-specific amplified polymorphic (SSAP) markers on the 1RS chromosome arm of rye in a wheat background

Genetic variation in germplasm accessions of Secale vavilovii Grossh

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