2017
DOI: 10.21474/ijar01/5529
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Two Step Transfer of Rye-Derived Hessian Fly- Resistance Gene H21 to Durum Wheat by Compensating Robertsonian Translocation and Induced Homoeologous Recombination.

Abstract: The Hessian fly resistance gene H21 is present on the wheat-rye wholearm translocation T2BS·2RL and was recently transferred to durum wheat. However, homozygous lines for this translocation have poor plant vigor, low seed set, and are almost completely sterile, making it impossible to use this germplasm directly in durum wheat improvement. The objective of this study was to reduce the rye segment in T2BS·2RL using ph-mediated recombination, thereby making this gene available for durum breeding. A total of 39 p… Show more

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Cited by 2 publications
(2 citation statements)
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References 27 publications
(41 reference statements)
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“…The second step of such transfers can be accomplished either by homologous recombination to stack more genes in the alien chromosome arm as was first done (Friebe et al 1994;Jiang et al, 1994b) in transferring the powdery mildew gene Pm20 from 6RL to the existing translocation T6BS•6RL. In the case of non-homologous arms, the reduction of the alien segment can be accomplished by induced homoeologous recombination as was shown by Ferrahi et al (2017a).…”
Section: Discussion:-mentioning
confidence: 96%
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“…The second step of such transfers can be accomplished either by homologous recombination to stack more genes in the alien chromosome arm as was first done (Friebe et al 1994;Jiang et al, 1994b) in transferring the powdery mildew gene Pm20 from 6RL to the existing translocation T6BS•6RL. In the case of non-homologous arms, the reduction of the alien segment can be accomplished by induced homoeologous recombination as was shown by Ferrahi et al (2017a).…”
Section: Discussion:-mentioning
confidence: 96%
“…Very little progress has been made in durum wheat(Dvorak and Lukaszewski 2000;Dvorak and Gorham 1992;Dvorak et al 1994;Luo et al 1996b;Ceoloni et al 1996, Ferrahi et al, 2017a, Ferrahi et al, 2017b, probably because the a b buffering ability of tetraploid durum wheat is less than that of hexaploid wheat. Other sources of resistance need to be used in durum wheat improvement to increase the genetic variability.…”
mentioning
confidence: 99%