scholarly journals Mutations in the HvMKK3 and HvAlaAT1 genes affect barley preharvest sprouting and after‐ripened seed dormancy

Crop Science ◽  
2020 ◽  
Vol 60 (4) ◽  
pp. 1897-1906
Author(s):  
Justin M. Vetch ◽  
Jason G. Walling ◽  
Jamie Sherman ◽  
John M. Martin ◽  
Michael J. Giroux
Keyword(s):  
Seed Dormancy ◽  
Preharvest Sprouting

scholarly journals Interactions of the barley SD1 and SD2 seed dormancy loci influence preharvest sprouting, seed dormancy, and malting quality

Crop Science ◽  
2021 ◽  
Author(s):  
Daniel W. Sweeney ◽  
Travis E. Rooney ◽  
Jason G. Walling ◽  
Mark E. Sorrells
Keyword(s):  
Seed Dormancy ◽  
Preharvest Sprouting ◽  
Malting Quality

scholarly journals Identification of Chromosome Locations of Genes Affecting Preharvest Sprouting and Seed Dormancy Using Chromosome Substitution Lines in Tetraploid Wheat (Triticum turgidum L.)

Crop Science ◽  
2010 ◽  
Vol 50 (4) ◽  
pp. 1180-1187 ◽  
Author(s):  
Shiaoman Chao ◽  
Steven S. Xu ◽  
Elias M. Elias ◽  
Justin D. Faris ◽  
Mark E. Sorrells
Keyword(s):  
Seed Dormancy ◽  
Triticum Turgidum ◽  
Tetraploid Wheat ◽  
Preharvest Sprouting ◽  
Chromosome Substitution ◽  
Substitution Lines ◽  
Chromosome Substitution Lines

Evaluation and selection of bread wheat (Triticum aestivum L.) for preharvest sprouting tolerance

1995 ◽  
Vol 46 (3) ◽  
pp. 463 ◽  
Author(s):  
RM Trethowan
Keyword(s):  
Bread Wheat ◽  
Seed Dormancy ◽  
Triticum Aestivum L ◽  
Preharvest Sprouting ◽  
First Year ◽  
Falling Number ◽  
Selection For ◽  
Visual Measurements ◽  
Selection Of ◽  
Rain Simulator

This paper examines the success of selection for preharvest sprouting tolerance in white-grained bread wheat using a standard wetting treatment, germination of hand-threshed seed and falling number measurements. The rain simulator was usefull in shifting the population mean of field grown material towards higher levels of tolerance in successive years; however, large genotype x year interactions in material sown under rain protection did not allow accurate assessment of individual genotypes. The most accurate assessments were achieved using falling number measurements (h2 = 80.7%) and hand-threshed seed germinations (h2 = 38.4%), where no genotype x year interactions were recorded. Seed dormancy (determined from hand threshed grain) correlated significantly with change in falling number following 3 days' treatment in the rain simulator ( r = -0-56**). Visual measurements scored in the rain simulator, however, did not correlate significantly with seed dormancy in the first year (r = 0.20) but correlated strongly in the second (r = 0.73***). In comparisons of the same test between years, falling number (without rain treatment) and seed dormancy were significantly correlated (r = 0.68* and 0.90***, respectively), whilst visual scores of sprouting showed no association (r = -0.03).

SEED DORMANCY | Preharvest Sprouting

2003 ◽  
pp. 1333-1339
Author(s):  
R.L. Benech-Arnold ◽  
R.A. Sánchez
Keyword(s):  
Seed Dormancy ◽  
Preharvest Sprouting

scholarly journals Polymorphism of Sdr genes regulating seed dormancy in Triticum persicum Vav. and Triticum aethiopicum Jakubz.

2020 ◽  
Vol 23 (8) ◽  
pp. 964-971
Author(s):  
M. S. Bazhenov ◽  
E. D. Guseva ◽  
V. S. Rubets
Keyword(s):  
Common Wheat ◽  
Seed Dormancy ◽  
Association Studies ◽  
Physiological State ◽  
Tetraploid Wheat ◽  
Preharvest Sprouting ◽  
Local Varieties ◽  
Promising Area ◽  
Triticum Aethiopicum ◽  
Main Component

Preharvest sprouting of wheat grain, sporadically observed in many regions of cultivation of this crop, leads to deterioration of its food and sowing qualities. Seed dormancy is considered to be the main component of resistance to preharvest sprouting. This physiological state of seeds is regulated by many genes, and it depends heavily on environmental conditions. One of the regulators of seed dormancy in cereals is the Sdr4 gene (Seed dormancy 4), which was first studied in rice. In common wheat, the homologues of this gene (TaSdr-A1 and TaSdr-B1) are also involved in the regulation of seed dormancy. The search for valuable alleles in local varieties and endemic forms is a promising area of research aimed at increasing the resistance of crops to adverse environmental factors. In this study, Sdr genes were sequenced in several accessions of two tetraploid wheat species with limited cultivation areas: Persian wheat (Triticum persicum Vav.) and Ethiopian wheat (Triticum aethiopicum Jakubz.). As a result, the same Sdr-A1 and Sdr-B1 variants that had been found in common wheat were detected in these species. The Persian wheat accessions possessed only the Sdr-A1a allele, while Ethiopian ones, only Sdr-A1b. The analysis of F2 hybrids obtained from crossing these tetraploid species showed that the Sdr-A1b allele was associated with a lower germination index of grains than Sdr-A1a. This result was inconsistent with earlier association studies. Previously unknown polymorphisms were found in the promoter of the Sdr-B1 gene in the studied accessions. A deletion of 16 nucleotides was detected in the 3’-terminal region of the TraesCS2B02G215200 gene, located on the complementary DNA chain close to the 3’-end of the Sdr-B1 gene. Possible effects of the detected polymorphisms on the expression of Sdr genes are discussed.

Preharvest sprouting tolerance in three triticale biotypes

1993 ◽  
Vol 44 (8) ◽  
pp. 1789 ◽  
Author(s):  
RM Trethowan ◽  
WH Pfeiffer ◽  
RJ Pena ◽  
OS Abdalla
Keyword(s):  
Seed Dormancy ◽  
Moisture Stress ◽  
Water Soluble ◽  
Preharvest Sprouting ◽  
Human Consumption ◽  
Inhibitory Effects ◽  
Related Factors ◽  
Major Constraint ◽  
Chemical Inhibition ◽  
Selection Of

Preharvest sprouting is a major constraint to the utilization of triticale for human consumption in regions where moist, humid conditions prevail during harvest. To examine variation for different components of preharvest sprouting tolerance (PST), trials were conducted over six environments in Mexico. Seed dormancy, bract related chemical and mechanical inhibitory effects and falling number (FN) were measured in primary and secondary triticales and their wheat and rye progenitors. Seed dormancy contributed 78% to PST with significant variation among and within triticale biotypes and progenitor species for bract water soluble inhibitors, bract mechanical barriers and FN. Bract chemical inhibition was higher when soil moisture was non-limiting in moisture-stress/non-stress experiments, suggesting the presence of inhibitors other than abscisic acid. In combination, tolerance components enhanced PST. Substituted triticales [2D(2R)] showed higher seed dormancy and bract related tolerances compared with other triticale biotypes and displayed PST equivalent to wheat. The higher PST in wheat could be attributed to higher FN levels. Components of PST evident in the wheat and rye progenitors were suppressed by wheat/rye genomic interactions in primary triticales. The selection of triticales with high stable FN will be an important first step in the development of PST cultivars, by providing the building block upon which seed dormancy and other related factors can be introduced.

Genetic and QTL analyses of seed dormancy and preharvest sprouting resistance in the wheat germplasm CN10955

2008 ◽  
Vol 116 (7) ◽  
pp. 891-902 ◽  
Author(s):  
F. C. Ogbonnaya ◽  
M. Imtiaz ◽  
G. Ye ◽  
P. R. Hearnden ◽  
E. Hernandez ◽  
...  
Keyword(s):  
Seed Dormancy ◽  
Preharvest Sprouting ◽  
Wheat Germplasm ◽  
Sprouting Resistance ◽  
Preharvest Sprouting Resistance

A maize viviparous 1 gene increases seed dormancy and preharvest sprouting tolerance in transgenic wheat

2012 ◽  
Vol 55 (2) ◽  
pp. 166-173 ◽  
Author(s):  
Tao Huang ◽  
Bo Qu ◽  
He-Ping Li ◽  
Dong-Yun Zuo ◽  
Zheng-Xi Zhao ◽  
...  
Keyword(s):  
Seed Dormancy ◽  
Transgenic Wheat ◽  
Preharvest Sprouting

Novel loci and a role for nitric oxide for seed dormancy and preharvest sprouting in barley

2019 ◽  
Vol 42 (4) ◽  
pp. 1318-1327 ◽  
Author(s):  
Manuela Nagel ◽  
Ahmad M. Alqudah ◽  
Marlène Bailly ◽  
Loïc Rajjou ◽  
Sibylle Pistrick ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Seed Dormancy ◽  
Preharvest Sprouting
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