Molecular cytogenetic analysis of Agropyron elongatum chromatin in wheat germplasm specifying resistance to wheat streak mosaic virus

1993 ◽  
Vol 86 (1) ◽  
pp. 41-48 ◽  
Author(s):  
J. Jiang ◽  
B. Friebe ◽  
H. S. Dhaliwal ◽  
T. J. Martin ◽  
B. S. Gill
2011 ◽  
Vol 5 (3) ◽  
pp. 414-417 ◽  
Author(s):  
Jasdeep S. Mutti ◽  
P. Stephen Baenziger ◽  
Robert A. Graybosch ◽  
Roy French ◽  
Kulvinder S. Gill

Crop Science ◽  
1995 ◽  
Vol 35 (4) ◽  
pp. 1236-1237 ◽  
Author(s):  
B. S. Gill ◽  
B. Friebe ◽  
D. L. Wilson ◽  
T. J. Martin ◽  
T. S. Cox

Genome ◽  
1990 ◽  
Vol 33 (3) ◽  
pp. 400-404 ◽  
Author(s):  
E. D. P. Whelan ◽  
O. M. Lukow

The wheat curl mite (Eriophyes tulipae Keifer) is the vector of both wheat streak mosaic virus and the wheat spot mosaic agent, which cause damaging diseases of wheat (Triticum aestivum). A spontaneous translocation between chromosome 6A of the hard spring wheat cultivar 'Cadet' and a group 6 chromosome (6Ag) from decaploid Agropyron elongatum (Host) Beauv. resulted in a transfer of resistance to colonization by the wheat curl mite from 6Ag to a wheat chromosome. Transmission of resistance was 50.2% through the egg and 28.2% through the pollen. In segregating progenies, 64.1% of the plants were resistant, and 25.5% of the resistant plants were homozygous resistant. Meiotic pairing of hybrids from crosses between the translocation line and ditelocentrics for chromosome 6A suggested that the translocated chromosome consisted of the short arm of 'Cadet' 6A and the p or short arm of chromosome 6Ag of A. elongatum that confers mite resistance. This postulation was confirmed by electrophoretic patterns of seed endosperm proteins; the translocation line produced α-gliadins coded by genes on the short arm of 'Cadet' 6A as well as β-gliadins coded by genes on the short arm of A. elongatum chromosome 6.Key words: electrophoresis, gliadins, wheat streak mosaic virus, Agropyron elongatum, Robertsonian translocation.


2019 ◽  
Vol 13 (4) ◽  
pp. 389-402 ◽  
Author(s):  
Ekaterina D. Badaeva ◽  
Sergei A. Surzhikov ◽  
Alexander V. Agafonov

Thinopyrum bessarabicum (T. Săvulescu & T. Rayss, 1923) A. Löve, 1980 is diploid (2n=2x=14, JJ or EbEb), perennial self-fertilizing rhizomatous maritime beach grass, which is phylogenetically close to another diploid wheatgrass species, Agropyron elongatum (N. Host, 1797) P. de Beauvois, 1812. The detailed karyotype of Th. bessarabicum was constructed based on FISH with six DNA probes representing 5S and 45S rRNA gene families and four tandem repeats. We found that the combination of pAesp_SAT86 (= pTa-713) probe with pSc119.2 or pAs1/ pTa-535 allows the precise identification of all J-genome chromosomes. Comparison of our data with the results of other authors showed that karyotypically Th. bessarabicum is distinct from A. elongatum. On the other hand, differences between the J-genome chromosomes of Th. bessarabicum and the chromosomes of hexaploid Th. intermedium (N. Host, 1797) M. Barkworth & D.R. Dewey, 1985 and decaploid Th. ponticum (J. Podpěra, 1902) Z.–W. Liu & R.–C. Wang, 1993 in the distribution of rDNA loci and hybridization patterns of pSc119.2 and pAs1 probes could be an indicative of (1) this diploid species was probably not involved in the origin of these polyploids or (2) it could has contributed the J-genome to Th. intermedium and Th. ponticum, but it was substantially modified over the course of speciation


Crop Science ◽  
2002 ◽  
Vol 42 (4) ◽  
pp. 1381-1382 ◽  
Author(s):  
S.D. Haley ◽  
T.J. Martin ◽  
J.S. Quick ◽  
D.L. Seifers ◽  
J.A. Stromberger ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document