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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

    Molecular map** of the downy mildew and rust resistance genes in a sunflower germplasm line TX16R

    The sunflower germplasm line TX16R is resistant to Plasmopara halstedii (causal agent of sunflower downy mildew) and Puccinia helianthi (causal agent of sunflower rust), which are two destructive foliar diseases ...

    Z. Liu, L. Zhang, G. J. Ma, G. J. Seiler, C. C. Jan, L. L. Qi in Molecular Breeding (2019)

  6. 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)

  7. 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)

  8. 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)

  9. No Access

    Article

    Shape optimization of energy storage flywheel rotor

    A flywheel plays an important role in storing energy in modern machine systems. Flywheels can store rotational energy at a high rotating speed and have the ability to deliver a high output power if the system ...

    L. Jiang, W. Zhang, G. J. Ma, C. W. Wu in Structural and Multidisciplinary Optimization (2017)

  10. 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)

  11. No Access

    Article

    Map saturation and SNP marker development for the rust resistance genes (R 4 , R 5 , R 13a , and R 13b ) in sunflower (Helianthus annuus L.)

    Sunflower rust, which is incited by the fungus Puccinia helianthi Schwein., is the most common disease in Australia, Argentina, South Africa, and North America. Three independent genes, R

    L. L. Qi, Y. M. Long, G. J. Ma, S. G. Markell in Molecular Breeding (2015)

  12. 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)

  13. 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)

  14. No Access

    Article

    Influence of wall slip on the hydrodynamic behavior of a two-dimensional slider bearing

    In the present paper, a multi-linearity method is used to address the nonlinear slip control equation for the hydrodynamic analysis of a two-dimensional (2-D) slip gap flow. Numerical analysis of a finite leng...

    G. J. Ma, C. W. Wu, P. Zhou in Acta Mechanica Sinica (2007)

  15. No Access

    Article

    Initial study of strengthening of NiAl–Cr(Mo)–Hf alloys by strong magnetic field

    It was found that after treatment under 10T magnetic field and temperature 900 °C the bending strength of NiAl–Cr(Mo)–Hf alloy is increased by about 75%. The fracture section observation shows that the specime...

    G. J. Ma, C. W. Wu, W. L. Zhou, X. L. Guo, M. F. Ren… in Journal of Materials Research (2005)

  16. No Access

    Chapter

    Studies on Micronucleus Test by Human Skin Puncture

    Our work on scoring the frequency of micronucleus (MNF) directly in 1–2 drops of human blood obtained from skin puncture was reported in a previous paper. The results of further study are given as follows:

      K. X. Xue, Y. Y. Cai, B. Y. Ding, X. J. Sun, P. Zhou… in Mutation, Cancer, and Malformation (1984)