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GrainGenes Reference Report: TAG-86-951

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Reference
TAG-86-951
Title
Haploid production in durum wheat by the interaction of Aegilops kotschyi cytoplasm and 1BL/1RS chromosomal interchange
Journal
Theoretical and Applied Genetics
Year
1993
Volume
86
Pages
951-954
Author
Hsam S
Zeller F
Abstract
The present study describes the development of an alloplasmid haploid-inducer in durum wheat cv 'Cando' This cultivar possesses the homozygous wheat-rye translocation 1BL/1RS from the 6x-wheat cv 'Veery' The nucleus of 4x-'Cando-Veery 1BL/1RS' was introduced into Aegilops kotschyi cytoplasm by initially using (kotschyi)-Salmon as the maternal parent In the cross of this alloplasmic durum line with 'Cando-Veery 1BL/1RS', which was used as the recurrent pollen parent, haploids (n = 14) were produced The frequency of haploids increased from 5.7% in the F1 generation to 14% in the BC1 generation. The presence of rye chromosome arm 1RS and the concomitant loss of 1BS in '(kotschyi)-Cando-Veery 1BL/1RS' are necessary for haploid induction. Proposals are made which may enable the use of haploids produced by nucleo-cytoplasmic interactions in future wheat breeding programs.
Keyword
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aegilops
chromosome-number
cytoplasmic-inheritance
haploid
haploidy
intergeneric-hybridization
nucleocytoplasmic-interaction
translocation-lines
triticum durum
triticum turgidum

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