Establishment and characterization of new wheat- Thinopyrum ponticum addition and translocation lines with resistance to Ug99 races

2016 ◽  
Vol 43 (9) ◽  
pp. 573-575 ◽  
Author(s):  
Hongwei Li ◽  
Qi Zheng ◽  
Zacharias A. Pretorius ◽  
Bin Li ◽  
Dingzhong Tang ◽  
...  
Keyword(s):  
Thinopyrum Ponticum ◽  
Translocation Lines

scholarly journals Development and Characterization of Wheat-Agropyron cristatum Introgression Lines Induced by Gametocidal Genes and Wheat ph1b Mutant

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 277
Author(s):  
Alejandro Copete-Parada ◽  
Carmen Palomino ◽  
Adoración Cabrera
Keyword(s):  
Genetic Resources ◽  
Agropyron Cristatum ◽  
Homologous Gene ◽  
Aegilops Cylindrica ◽  
Induction Frequency ◽  
Structural Aberrations ◽  
Translocation Lines ◽  
New Germplasm

The P genome of Agropyron cristatum Gaertn. contains many desirable genes that can be utilized as genetic resources to improve wheat. In this research, we used both the gametocidal chromosome 2Cc and the pairing homologous gene (Ph1b) mutant to induce structural aberrations and translocations between wheat and the 4P, 5P, and 6P genome chromosomes. By using the two approaches, a total of 19 wheat-A. cristatum translocations have been identified, in which 13 were induced by the Triticum aestivum cv. Chinese Spring (CS) ph1b mutant (CS ph1b) and six were induced by gametocidal chromosome 2Cc from Aegilops cylindrica Host. The wheat-4P, -5P and -6P A. cristatum translocations were characterized by in situ hybridization and by a set of conserved orthologous set (COS) molecular markers. The aberrations included centromeric translocations, terminal translocations, dicentric translocations, and deletions. The average induction frequency of chromosome structural aberrations was 10.9% using gametocidal 2Cc chromosome and 8.8% using ph1b mutant. The highest frequency obtained was for chromosome 4P using both approaches. All the wheat-A. cristatum translocation lines obtained were valuable for identifying A. cristatum chromosome 4P, 5P, and 6P related genes. In addition, these lines provided genetic resources and new germplasm accessions for the genetic improvement of wheat.

scholarly journals Molecular cytogenetic characterization of parental genomes in the partial amphidiploid Triticum aestivum x Thinopyrum ponticum

2005 ◽  
Vol 28 (2) ◽  
pp. 308-313 ◽  
Author(s):  
Ana Christina Brasileiro-Vidal ◽  
Angeles Cuadrado ◽  
Sandra P. Brammer ◽  
Ana Maria Benko-Iseppon ◽  
Marcelo Guerra
Keyword(s):  
Triticum Aestivum ◽  
Thinopyrum Ponticum ◽  
Molecular Cytogenetic ◽  
Cytogenetic Characterization

Development and characterization of wheat- Leymus racemosus translocation lines with resistance to Fusarium Head Blight

2005 ◽  
Vol 111 (5) ◽  
pp. 941-948 ◽  
Author(s):  
Peidu Chen ◽  
Wenxuan Liu ◽  
Jianhua Yuan ◽  
Xiue Wang ◽  
Bo Zhou ◽  
...  
Keyword(s):  
Fusarium Head Blight ◽  
Head Blight ◽  
Leymus Racemosus ◽  
Translocation Lines

Development and characterization of novel wheat-rye 1RS•1BL translocation lines with high resistance to Puccinia striiformis f. sp. tritici

2022 ◽  
Author(s):  
Tianheng Ren ◽  
Qing Jiang ◽  
Zixin Sun ◽  
Zhenglong Ren ◽  
Feiquan Tan ◽  
...  
Keyword(s):  
Stripe Rust ◽  
High Resistance ◽  
Puccinia Striiformis ◽  
Stripe Rust Resistance ◽  
Sources Of Resistance ◽  
Chinese Landrace ◽  
New Gene ◽  
Improvement Programs ◽  
Translocation Lines

Wheat-rye 1RS•1BL translocations from Petkus rye have contributed substantially to wheat production worldwide with their great disease resistance and yield traits. However, the resistance genes on the 1RS chromosomes have completely lost their resistance to newly emerged pathogens. Rye could widen the variation of 1RS as a naturally cross-pollinated related species of wheat. In this study, we developed three new 1RS•1BL translocation lines by crossing rye inbred line BL1, selected from Chinese landrace rye Baili, with wheat cultivar Mianyang11. These three new translocation lines exhibited high resistance to the most virulent and frequently occurring stripe rust pathotypes and showed high resistance in the field where stripe rust outbreaks have been most severe in China. One new gene for stripe rust resistance, located on 1RS of the new translocation lines, is tentatively named YrRt1054. YrRt1054 confers resistance to Puccinia striiformis f. sp. tritici pathotypes that are virulent toward Yr9 and YrCn17. This new resistance gene, YrRt1054, is available for wheat improvement programs. The present study indicated that rye cultivars may carry additional untapped variation as potential sources of resistance.

Establishment of wheat-Thinopyrum ponticum translocation lines with resistance to Puccinia graminis f. sp. tritici Ug99

2019 ◽  
Vol 46 (8) ◽  
pp. 405-407 ◽  
Author(s):  
Hongwei Li ◽  
Willem H.P. Boshoff ◽  
Zacharias A. Pretorius ◽  
Qi Zheng ◽  
Bin Li ◽  
...  
Keyword(s):  
Puccinia Graminis ◽  
Thinopyrum Ponticum ◽  
Translocation Lines
Sign in / Sign up

Export Citation Format

Share Document