Abstract
Objective of the present work was to compare the magnitude of genetic variability generated in hexaploid oat genotypes treated with two mutagenic agents: physical versus chemical. The physical agent was nearly always superior to the chemical agent, regardless of the evaluated cross or generation, providing a larger number of phenotypic classes of shorter plants. The mutant genotypes indicated a differentiated sensitivity to doses of the applied agents. This fact shows the efficiency of these agents in altering the genetic variability of this trait upwards (high height) as well as downwards (short height). In general, data pointed to a decrease in the trait plant height under increasing agent doses. The largest degree of genetiC divergence and dominance for the new dwarfing genes was obtained by doses 100 Gy and 0.5%, respectively, of mutagenic physical and chemical agents applied to UFRGS 10 genotype in the M2 generation.
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Claims 6
Claim · model-written summary
The physical mutagenic agent was nearly always superior to the chemical agent in oat, giving a larger number of phenotypic classes of shorter plants regardless of cross or generation.
- Taxon
- oat
Avena sativae0 - Treatment
- physical agente1
- Outcome
- larger number of phenotypic classes of shorter plantse1
- Direction
- superiore1
- Comparator
- chemical agente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compare the magnitude of genetic variability generated in hexaploid oat genotypes treated with two mutagenic agents”
e1“The physical agent was nearly always superior to the chemical agent, regardless of the evaluated cross or generation, providing a larger number of phenotypic classes of shorter plants”
Claim · model-written summary
The mutant oat genotypes showed differentiated sensitivity to doses of the applied agents.
- Taxon
- oatAvena sativae0
- Material
- mutant genotypese1
- Outcome
- differentiated sensitivity to dosese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compare the magnitude of genetic variability generated in hexaploid oat genotypes treated with two mutagenic agents”
e1“The mutant genotypes indicated a differentiated sensitivity to doses of the applied agents”
Claim · model-written summary
Plant height of oat generally decreased under increasing mutagen doses.
- Taxon
- oatAvena sativae0
- Treatment
- increasing agent dosese1
- Outcome
- plant heighte1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compare the magnitude of genetic variability generated in hexaploid oat genotypes treated with two mutagenic agents”
e1“In general, data pointed to a decrease in the trait plant height under increasing agent doses”
Claim · model-written summary
The authors conclude the mutagenic agents are efficient in altering genetic variability of plant height both upwards (taller) and downwards (shorter).
- Taxon
- oatAvena sativae0
- Treatment
- these agentse1
- Outcome
- genetic variability of this traite1
- Direction
- upwards (high height) as well as downwards (short height)e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compare the magnitude of genetic variability generated in hexaploid oat genotypes treated with two mutagenic agents”
e1“This fact shows the efficiency of these agents in altering the genetic variability of this trait upwards (high height) as well as downwards (short height)”
Claim · model-written summary
The largest degree of genetic divergence for the new dwarfing genes in the M2 generation of UFRGS 10 was obtained with the physical agent at 100 Gy.
- Taxon
- oatAvena sativae0
- Material
- UFRGS 10 genotypee1
- Treatment
- 100 Gye1
- Outcome
- genetiC divergencee1
- Direction
- largeste1
- Qualifier
- M2 generatione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compare the magnitude of genetic variability generated in hexaploid oat genotypes treated with two mutagenic agents”
e1“The largest degree of genetiC divergence and dominance for the new dwarfing genes was obtained by doses 100 Gy and 0.5%, respectively, of mutagenic physical and chemical agents applied to UFRGS 10 genotype in the M2 generation”
Claim · model-written summary
The largest degree of dominance for the new dwarfing genes in the M2 generation of UFRGS 10 was obtained with the chemical agent at 0.5%.
- Taxon
- oatAvena sativae0
- Material
- UFRGS 10 genotypee1
- Treatment
- 0.5%e1
- Outcome
- dominance for the new dwarfing genese1
- Direction
- largeste1
- Qualifier
- M2 generatione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compare the magnitude of genetic variability generated in hexaploid oat genotypes treated with two mutagenic agents”
e1“The largest degree of genetiC divergence and dominance for the new dwarfing genes was obtained by doses 100 Gy and 0.5%, respectively, of mutagenic physical and chemical agents applied to UFRGS 10 genotype in the M2 generation”