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  1. No Access

    Article

    Whole-genome sequencing enables molecular dissection and candidate gene identification of the rust resistance gene R12 in sunflower (Helianthus annuus L.)

    We finely mapped the rust resistance gene R12 to a 0.1248-cM region, identified a potential R12 candidate gene in the XRQ reference genome, and developed three diagnostic SNP markers for R12.

    G. J. Ma, Z. I. Talukder, Q. J. Song, X. H. Li… in Theoretical and Applied Genetics (2023)

  2. No Access

    Article

    Introgression and targeting of the Pl37 and Pl38 genes for downy mildew resistance from wild Helianthus annuus and H. praecox into cultivated sunflower (Helianthus annuus L.)

    Two new downy mildew resistance genes, Pl37 and Pl38, were introgressed from wild sunflower species into cultivated sunflower and mapped to sunflower chromosomes 4 and 2, respectively

    L. L. Qi, Z. I. Talukder, G. J. Ma, G. J. Seiler in Theoretical and Applied Genetics (2023)

  3. No Access

    Article

    Discovery and map** of two new rust resistance genes, R17 and R18, in sunflower using genoty** by sequencing

    Discovery of two rust resistance genes, R17 and R18, from the sunflower lines introduced from South Africa and genetic map** of them to sunflower chromosome 13.

    L. L. Qi, Z. I. Talukder, G. J. Ma, X. H. Li in Theoretical and Applied Genetics (2021)

  4. No Access

    Article

    Diversification of the downy mildew resistance gene pool by introgression of a new gene, Pl35, from wild Helianthus argophyllus into oilseed and confection sunflowers (Helianthus annuus L.)

    We have mapped a new downy mildew resistance gene, Pl35, derived from wild Helianthus argophyllus to sunflower linkage group 1. New germplasms incorporating the Pl35 gene were developed for both oilseed and confe...

    L. L. Qi, G. J. Ma, X. H. Li, G. J. Seiler in Theoretical and Applied Genetics (2019)

  5. No Access

    Article

    High-throughput genoty**-by-sequencing facilitates molecular tagging of a novel rust resistance gene, R 15 , in sunflower (Helianthus annuus L.)

    A novel rust resistance gene, R 15 , derived from the cultivated sunflower HA-R8 was assigned to linkage group 8 of the sunflower genome using a genoty**-by-sequencing appr...

    G. J. Ma, Q. J. Song, S. G. Markell, L. L. Qi in Theoretical and Applied Genetics (2018)

  6. No Access

    Article

    Genoty**-by-sequencing targeting of a novel downy mildew resistance gene Pl 20 from wild Helianthus argophyllus for sunflower (Helianthus annuus L.)

    Genoty**-by-sequencing revealed a new downy mildew resistance gene, Pl 20 , from wild ...

    G. J. Ma, S. G. Markell, Q. J. Song, L. L. Qi in Theoretical and Applied Genetics (2017)

  7. No Access

    Article

    An innovative SNP genoty** method adapting to multiple platforms and throughputs

    An innovative genoty** method designated as semi-thermal asymmetric reverse PCR (STARP) was developed for genoty** individual SNPs with improved accuracy, flexible throughputs, low operatio...

    Y. M. Long, W. S. Chao, G. J. Ma, S. S. Xu, L. L. Qi in Theoretical and Applied Genetics (2017)

  8. No Access

    Article

    Discovery and introgression of the wild sunflower-derived novel downy mildew resistance gene Pl 19 in confection sunflower (Helianthus annuus L.)

    A new downy mildew resistance gene, Pl 19 , was identified from wild Helianthus a...

    Z. W. Zhang, G. J. Ma, J. Zhao, S. G. Markell, L. L. Qi in Theoretical and Applied Genetics (2017)

  9. No Access

    Article

    Genetics and map** of a novel downy mildew resistance gene, Pl 18 , introgressed from wild Helianthus argophyllus into cultivated sunflower (Helianthus annuus L.)

    A novel downy mildew resistance gene, Pl 18 , was introgressed from wild Helianth...

    L. L. Qi, M. E. Foley, X. W. Cai, T. J. Gulya in Theoretical and Applied Genetics (2016)

  10. No Access

    Article

    Pl 17 is a novel gene independent of known downy mildew resistance genes in the cultivated sunflower (Helianthus annuus L.)

    Pl 17 , a novel downy mildew resistance gene independent of known downy mildew resistance genes in sunflowers, was ge...

    L. L. Qi, Y. M. Long, C. C. Jan, G. J. Ma, T. J. Gulya in Theoretical and Applied Genetics (2015)

  11. No Access

    Article

    Relocation of a rust resistance gene R 2 and its marker-assisted gene pyramiding in confection sunflower (Helianthus annuus L.)

    The rust resistance gene R 2 was reassigned to linkage group 14 of the sunflower genome. DNA mark...

    L. L. Qi, G. J. Ma, Y. M. Long, B. S. Hulke, L. Gong… in Theoretical and Applied Genetics (2015)

  12. No Access

    Article

    Genetic map** of rust resistance genes in confection sunflower line HA-R6 and oilseed line RHA 397

    Few widely effective resistance sources to sunflower rust, incited by Puccinia helianthi Schwein., have been identified in confection sunflower (Helianthus annuus L.). The USDA inbred line HA-R6 is one of the few...

    L. Gong, T. J. Gulya, S. G. Markell, B. S. Hulke… in Theoretical and Applied Genetics (2013)

  13. No Access

    Article

    Molecular tagging of a novel rust resistance gene R 12 in sunflower (Helianthus annuus L.)

    Sunflower production in North America has recently suffered economic losses in yield and seed quality from sunflower rust (Puccinia helianthi Schwein.) because of the increasing incidence and lack of resistance t...

    L. Gong, B. S. Hulke, T. J. Gulya, S. G. Markell… in Theoretical and Applied Genetics (2013)

  14. No Access

    Article

    Genetics and map** of the R 11 gene conferring resistance to recently emerged rust races, tightly linked to male fertility restoration, in sunflower (Helianthus annuus L.)

    Sunflower oil is one of the major sources of edible oil. As the second largest hybrid crop in the world, hybrid sunflowers are developed by using the PET1 cytoplasmic male sterility system that contributes to ...

    L. L. Qi, G. J. Seiler, B. A. Vick, T. J. Gulya in Theoretical and Applied Genetics (2012)

  15. No Access

    Article

    Molecular map** of the rust resistance gene R 4 to a large NBS-LRR cluster on linkage group 13 of sunflower

    Rust is a serious fungal disease in the sunflower growing areas worldwide with increasing importance in North America in recent years. Several genes conferring resistance to rust have been identified in sunflo...

    L. L. Qi, B. S. Hulke, B. A. Vick, T. J. Gulya in Theoretical and Applied Genetics (2011)

  16. No Access

    Article

    A novel Robertsonian translocation event leads to transfer of a stem rust resistance gene (Sr52) effective against race Ug99 from Dasypyrum villosum into bread wheat

    Stem rust (Puccinia graminis f. sp. tritici Eriks. & E. Henn.) (the causal agent of wheat stem rust) race Ug99 (also designated TTKSK) and its derivatives have defeated several important stem rust resistance gene...

    L. L. Qi, M. O. Pumphrey, Bernd Friebe, P. Zhang… in Theoretical and Applied Genetics (2011)

  17. No Access

    Article

    Molecular cytogenetic characterization of alien introgressions with gene Fhb3 for resistance to Fusarium head blight disease of wheat

    Fusarium head blight (FHB) resistance was identified in the alien species Leymus racemosus, and wheat-Leymus introgression lines with FHB resistance were reported previously. Detailed mol...

    L. L. Qi, M. O. Pumphrey, Bernd Friebe, P. D. Chen… in Theoretical and Applied Genetics (2008)

  18. No Access

    Article

    High-density physical maps reveal that the dominant male-sterile gene Ms3 is located in a genomic region of low recombination in wheat and is not amenable to map-based cloning

    In wheat it is essential to know whether a gene is located in a high or low recombination region of the genome before initiating a map-based cloning approach. The objective of this study was to explore the pot...

    L. L. Qi, B. S. Gill in Theoretical and Applied Genetics (2001)

  19. No Access

    Article

    Development of a complete set of Triticum aestivum-Aegilops speltoides chromosome addition lines

    Aegilops speltoides Tausch (2n = 2x = 14, SS) is considered as the closest living relative of the B and G genomes of polyploid wheats. A complete set of Triticum aestivum L. cv Chinese Spring-Ae. speltoides whol...

    B. Friebe, L. L. Qi, S. Nasuda, P. Zhang, N. A. Tuleen… in Theoretical and Applied Genetics (2000)

  20. No Access

    Article

    Identification and physical map** of three Haynaldia villosa chromosome-6V deletion lines

     Three deletion lines (del6V?2S-1, del6V? 2L-1, and del6V?2L-2) of Haynaldia villosa chromosome 6V added to wheat were identified by C-banding and characterized by RFLP analyses. The breakpoints were located at f...

    L. L. Qi, S. L. Wang, P. D. Chen, D. J. Liu, B. S. Gill in Theoretical and Applied Genetics (1998)

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