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  • Agropyron elongatum derivatives  (1)
  • Agropyron intermedium  (1)
  • Springer  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Molecular cytogenetic analysis of Agropyron elongatum chromatin in wheat germplasm specifying resistance to wheat streak mosaic virus (1993)
    Springer
    Theoretical and applied genetics 86 (1993), S. 41-48 
    Details
    ISSN: 1432-2242
    Keywords: Wheat ; Agropyron elongatum derivatives ; WSMV resistance ; Molecular cytogenetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Three lines derived from wheat (6x) x Agropyron elongatum (10x) that are resistant to wheat streak mosaic virus (WSMV) were analyzed by chromosome pairing, banding, and in situ hybridization. Line CI15321 was identified as a disomic substitution line where wheat chromosome 1D is replaced by Ag. elongatum chromosome 1Ae-1. Line 87-94-1 is a wheat-Ag. elongatum ditelosomic addition 1Ae-1L. Line CI15322 contains an Ag. elongatum chromosome, 1Ae-2, that substitutes for chromosome 1D. The short arm of 1Ae-2 paired with the short arm of 1Ae-1 at metaphase I (MI) in 82% of the pollen mother cells (PMCs). However, the long arms of these two chromosomes did not pair with each other. In CI15322, the long arm of chromosome 4D has an Agropyron chromosome segment which was derived from the distal part of 1Ae-1L. This translocation chromosome is designated as T4DS·4DL-1L. T4DS·4DL-1Ae-1L has a 0.73 μm distal part of the long arm of 4D replaced by a 1.31 μm distal segment from 1Ae-1L. The major WSMV resistance gene(s) in these lines is located on the distal part of 1Ae-1L.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00223806
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  • 2
    Electronic Resource
    Electronic Resource
    Radiation-induced nonhomoeologous wheat-Agropyron intermedium chromosomal translocations conferring resistance to leaf rust (1993)
    Springer
    Theoretical and applied genetics 86 (1993), S. 141-149 
    Details
    ISSN: 1432-2242
    Keywords: Common wheat ; Allen translocations ; Agropyron intermedium ; Leaf rust resistance ; In-situ hybridization ; C-banding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The Agropyron intermedium chromosome 7Ai #2 is the source of the leaf rust resistance gene Lr38 which was transferred to wheat by irradiation. The chromosomal constitutions of eight radiation-induced rust-resistant wheat-Agropyron intermedium derivatives were analyzed by C-banding and genomic in-situ hybridization (GISH). Five lines were identified as wheat Ag. intermedium chromosome translocation lines with the translocation chromosomes T2AS·2AL-7Ai#2L, T5AL · 5AS-7Ai # 2L, T1DS · 1DL-7Ai # 2L, T3DL · 3DS-7Ai#2L, and T6DS · 6DL-7Ai#2L. The sizes of the 7Ai#2L segments in mitotic metaphases of these translocations are 2.42 μm, 4.20 μm, 2.55 μm, 2.78 μm, and 4.19 μm, respectively. One line was identified as a wheat-Ag. intermedium chromosome addition line. The added Ag. intermedium chromosome in this line is different from 7Ai # 2. This line has resistance to leaf rust and stem rust. Based on the rust reactions, and the C-banding and GISH results, the remaining two lines do not contain any Ag. intermedium-derived chromatin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00222072
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    Paper (German National Licenses)
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