Fine mapping of a preharvest sprouting QTL interval on chromosome 2B in white wheat

2014 ◽  
Vol 127 (8) ◽  
pp. 1843-1855 ◽  
Author(s):  
Suthasinee Somyong ◽  
Goro Ishikawa ◽  
Jesse D. Munkvold ◽  
James Tanaka ◽  
David Benscher ◽  
...  
2010 ◽  
Vol 27 (4) ◽  
pp. 511-523 ◽  
Author(s):  
Shubing Liu ◽  
Guihua Bai ◽  
Shibin Cai ◽  
Cuixia Chen

2002 ◽  
Vol 82 (2) ◽  
pp. 415-419 ◽  
Author(s):  
R. M. DePauw ◽  
R. S. Sadasivaiah ◽  
J. M. Clarke ◽  
M. R. Fernandez ◽  
R. E. Knox ◽  
...  

AC2000 is a hard white spring wheat (Triticum aestivum L.) with resistance to preharvest sprouting and prevalent races of common bunt [Tilletia laevis Kuhn in Rabenh. and T. caries (DC.) Tul. & C. Tul.]. It is eligible for grades of the Canada Prairie Spring (White) wheat class. Key words: Triticum aestivum L., cultivar description, white wheat, bunt resistance, preharvest sprouting resistance, noodle color


2002 ◽  
Vol 82 (1) ◽  
pp. 129-131 ◽  
Author(s):  
Pierre Hucl ◽  
Maria Matus-Cádiz

White-seeded spring wheat germplasm line W98616 was selected for improved levels of preharvest sprouting resistance. W98616 has levels of seed dormancy comparable to Columbus, a red-seeded sprouting-resistant cultivar. W98616 has similar test weight, kernel weight, maturity, plant height, grain protein, and kernel hardness, but is lower yielding and 2 d later heading relative to BW264, a hard white wheat cultivar. Key words: Triticum aestivum L., germplasm, white spring wheat, preharvest sprouting resistance


Crop Science ◽  
1984 ◽  
Vol 24 (4) ◽  
pp. 779-782 ◽  
Author(s):  
M. T. Nielsen ◽  
A. J. McCrate ◽  
E. G. Heyne ◽  
G. M. Paulsen

1998 ◽  
Vol 78 (4) ◽  
pp. 617-620 ◽  
Author(s):  
R. M. DePauw ◽  
T. N. McCaig ◽  
R. E. Knox ◽  
J. M.Clarke ◽  
M. R. Fernandez ◽  
...  

AC Vista is a hard white spring wheat (Triticum aestivum L.) with resistance to preharvest sprouting. It combines high grain yield and resistance to prevalent races of leaf rust, stem rust, common bunt, and loose smut except race T9 in a semidwarf photoperiod insensitive background. AC Vista has harder kernels and stronger gluten than AC Karma. It is eligible for grades of the Canada Prairie Spring (White) wheat class. Key words: Triticum aestivum L., cultivar description, white spring wheat, preharvest sprouting resistance, common bunt resistance, high grain yield


2019 ◽  
Author(s):  
Shantel A. Martinez ◽  
Oluwayesi Shorinola ◽  
Samantha Conselman ◽  
Deven See ◽  
Daniel Z. Skinner ◽  
...  

AbstractPreharvest sprouting (PHS) is the germination of mature grain on the mother plant when it rains before harvest. The ENHANCED RESPONSE TO ABA8 (ERA8) mutant increases seed dormancy and, consequently, PHS tolerance in soft white wheat ‘Zak’. ERA8 was mapped to chromosome 4A in a Zak/‘ZakERA8’ backcross population using bulked segregant analysis of exome sequenced DNA (BSA-exome-seq). ERA8 was fine-mapped relative to mutagen-induced SNPs to a 4.6 Mb region containing 70 genes. In the backcross population, the ERA8 ABA hypersensitive phenotype was strongly linked to a missense mutation TaMKK3-A-G1093A (LOD 16.5), a gene associated with natural PHS tolerance in barley and wheat. The map position of ERA8 was confirmed in an ‘Otis’/ZakERA8 but not in a ‘Louise’/ZakERA8 mapping population. This is likely because Otis carries the same natural PHS susceptible MKK3-A-A660S allele as Zak, whereas Louise carries the PHS tolerant MKK3-A-C660R allele. Thus, the variation for grain dormancy and PHS tolerance in the Louise/ZakERA8 population likely resulted from segregation of other loci rather than segregation for PHS tolerance at the MKK3 locus. This inadvertent complementation test suggests that the MKK3-A-G1093A mutation causes the ERA8 phenotype. Moreover, MKK3 was a known ABA signaling gene in the 70-gene 4.6 Mb ERA8 interval. None of these 70 genes showed the differential regulation in wild-type Zak versus ERA8 expected of a promoter mutation. Thus, the working model is that the ERA8 phenotype results from the MKK3-A-G1093A mutation.Key MessageUsing bulked segregant analysis of exome sequence, we fine-mapped the ABA hypersensitive mutant ERA8 in a wheat backcross population to the TaMKK3-A locus of chromosome 4A.


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