Phenotype uniformity in combined-stress environments has a different genetic architecture than in single-stress treatments
For crop production it is desirable for the mapping between genotype and phenotype to be consistent, such that an optimized genotype produces uniform sets of individual plants. Uniformity is strongly selected in breeding programs, usually automatically, as harvest equipment eliminates severely non-...
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doaj-bb1f3ea57f904c27acda3b8dd9b4fdd82020-11-24T20:41:19ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2011-05-01210.3389/fpls.2011.0001210562Phenotype uniformity in combined-stress environments has a different genetic architecture than in single-stress treatmentsG. Buddhika eMakumburage0Ann E Stapleton1University of North Carolina WilmingtonUniversity of North Carolina WilmingtonFor crop production it is desirable for the mapping between genotype and phenotype to be consistent, such that an optimized genotype produces uniform sets of individual plants. Uniformity is strongly selected in breeding programs, usually automatically, as harvest equipment eliminates severely non-uniform individuals. Uniformity is genetically controlled, is known to be increased by interplant competition, and is predicted to increase upon abiotic stress. We mapped maize loci controlling genotype by environment interaction in plant height uniformity. These loci are different than the loci controlling mean plant height. Uniformity decreases upon combining two abiotic stresses, with alleles conferring greater uniformity in a single stress showing little improvement in a combined stress treatment. The maize B73 and Mo17 inbreds do not provide segregating alleles for improvement in plant height uniformity, suggesting that the genetic network specifying plant height has a past history of selection for robustness.http://journal.frontiersin.org/Journal/10.3389/fpls.2011.00012/fullMaizeQTLabioticcombined stressmultiple stressphenotype stability |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
G. Buddhika eMakumburage Ann E Stapleton |
spellingShingle |
G. Buddhika eMakumburage Ann E Stapleton Phenotype uniformity in combined-stress environments has a different genetic architecture than in single-stress treatments Frontiers in Plant Science Maize QTL abiotic combined stress multiple stress phenotype stability |
author_facet |
G. Buddhika eMakumburage Ann E Stapleton |
author_sort |
G. Buddhika eMakumburage |
title |
Phenotype uniformity in combined-stress environments has a different genetic architecture than in single-stress treatments |
title_short |
Phenotype uniformity in combined-stress environments has a different genetic architecture than in single-stress treatments |
title_full |
Phenotype uniformity in combined-stress environments has a different genetic architecture than in single-stress treatments |
title_fullStr |
Phenotype uniformity in combined-stress environments has a different genetic architecture than in single-stress treatments |
title_full_unstemmed |
Phenotype uniformity in combined-stress environments has a different genetic architecture than in single-stress treatments |
title_sort |
phenotype uniformity in combined-stress environments has a different genetic architecture than in single-stress treatments |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Plant Science |
issn |
1664-462X |
publishDate |
2011-05-01 |
description |
For crop production it is desirable for the mapping between genotype and phenotype to be consistent, such that an optimized genotype produces uniform sets of individual plants. Uniformity is strongly selected in breeding programs, usually automatically, as harvest equipment eliminates severely non-uniform individuals. Uniformity is genetically controlled, is known to be increased by interplant competition, and is predicted to increase upon abiotic stress. We mapped maize loci controlling genotype by environment interaction in plant height uniformity. These loci are different than the loci controlling mean plant height. Uniformity decreases upon combining two abiotic stresses, with alleles conferring greater uniformity in a single stress showing little improvement in a combined stress treatment. The maize B73 and Mo17 inbreds do not provide segregating alleles for improvement in plant height uniformity, suggesting that the genetic network specifying plant height has a past history of selection for robustness. |
topic |
Maize QTL abiotic combined stress multiple stress phenotype stability |
url |
http://journal.frontiersin.org/Journal/10.3389/fpls.2011.00012/full |
work_keys_str_mv |
AT gbuddhikaemakumburage phenotypeuniformityincombinedstressenvironmentshasadifferentgeneticarchitecturethaninsinglestresstreatments AT annestapleton phenotypeuniformityincombinedstressenvironmentshasadifferentgeneticarchitecturethaninsinglestresstreatments |
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1716825563782447104 |