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Control of late maturity alpha-amylase in wheat by the dwarfing gene Rht - D1b and genes on the 1B/1R translocation

Published on Aug 1, 2013in Molecular Breeding1.86
· DOI :10.1007/s11032-013-9881-5
Aidan D. Farrell7
Estimated H-index: 7
(UWI: University of the West Indies),
P. S. Kettlewell2
Estimated H-index: 2
(Harper Adams University)
+ 4 AuthorsPeter Jack10
Estimated H-index: 10
Abstract
The occurrence of late maturity alpha-amylase (LMA) was investigated using two doubled haploid wheat populations segregating for the dwarfing gene Rht-D1b and the 1B/1R translocation. Genotypes were assessed in the field and in controlled environments where a cold-shock treatment was used to induce LMA. Results from field-grown genotypes from the cross Spark × Rialto suggest that the absence of Rht-D1b or the presence of the 1B/1R translocation increases the expression of LMA.These two genetic factors were found to act independently and to have a positive interaction (complementary epistasis). In Option × Potent genotypes fixed for Rht-D1b, the 1B/1R effect was similar to that seen in the equivalent Spark × Rialto genotypes. Under controlled environment conditions, genotypes with the 1B/1R translocation showed a higher occurrence of LMA under both control and cold-shock conditions. 1B/1R was present in the majority of genotypes expressing LMA under control and cold-shock conditions. The results point to the novel finding that the 1B/1R translocation increases the expression of alpha-amylase in LMA-prone germplasm independently of effects of Rht-D1b, whereas previously it had been thought to act by a modification of the Rht-D1b effect.
  • References (34)
  • Citations (10)
References34
Newest
#1Jose M. Barrero (CSIRO: Commonwealth Scientific and Industrial Research Organisation)H-Index: 16
#2Kolumbina Mrva (University of Adelaide)H-Index: 16
Last.Daryl J. Mares (University of Adelaide)H-Index: 28
view all 7 authors...
#1K.R. Kondhare (Harper Adams University)H-Index: 3
#2P.S. Kettlewell (Harper Adams University)H-Index: 14
Last.J.M. Monaghan (Harper Adams University)H-Index: 12
view all 5 authors...
#1M. J. Gooding (University of Reading)H-Index: 30
#2Rajneet Uppal (University of Reading)H-Index: 4
Last.A.J. Murdoch (University of Reading)H-Index: 19
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Cited By10
Newest
#1Liangliang Ju (CAS: Chinese Academy of Sciences)H-Index: 1
#2Guangbing Deng (CAS: Chinese Academy of Sciences)H-Index: 9
Last.Hai Long (CAS: Chinese Academy of Sciences)H-Index: 10
view all 8 authors...
#1Hao Tang (Sichuan Agricultural University)H-Index: 1
#2Hongbo Wang (Sichuan Agricultural University)H-Index: 1
Last.Benju Yan (Sichuan Agricultural University)H-Index: 8
view all 9 authors...
#1Richard Casebow (University of Reading)H-Index: 1
#2Caroline Hadley (University of Reading)H-Index: 1
Last.M. J. Gooding (Aberystwyth University)H-Index: 30
view all 8 authors...
#1K.R. Kondhare (IISc: Indian Institute of Science)H-Index: 1
#2Aidan D. Farrell (UWI: University of the West Indies)H-Index: 7
Last.J.M. Monaghan (Harper Adams University)H-Index: 12
view all 5 authors...
#1K.R. Kondhare (Harper Adams University)H-Index: 3
#2P.S. Kettlewell (Harper Adams University)H-Index: 14
Last.J.M. Monaghan (Harper Adams University)H-Index: 12
view all 5 authors...
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