Abstract
The progeny of a 7 x 7 diallel cross between plants randomly selected from a segregating tetraploid setaria population (S. sphacelata var. sevicea and var. splendida) was studied at Lawes, south-east Queensland, over a two year period in two spaced plant replicates. Plants were harvested at 6-week intervals (9-10 week in winter), and dry weight and flower head number were recorded. Two additional replicates were allowed to grow uninterrupted, and date of flowering and flower head number were recorded. Damage caused by the fungus Pyricularia gvisea was scored on all four replicates. Genetic analysis indicated a high order of general combining ability variance for yield in the population and strong positive genetic correlation between seasons for yield (rg = 0.72-1.26). Variance estimates derived from analysis of variance and parent offspring regression were comparable. Genetic variance was strongly and consistently additive for days to flower and flower head number. Positive genetic correlations between seasons and years for days to flower (rg = 0.31-1.09) indicated that genetic differences in flowering were not strongly confounded by environmental effects. Dry matter yield was genetically correlated with flower head number and hence earliness to flower (rg = 0.79-1.16). Days to flower was genetically correlated with flower head length (rg = 0.71-0.91). Resistance to the pathogen Pyricularia grisea was shown to be under genetic control. The data suggested that resistance may be controlled by a gene exhibiting tetrasomic inheritance with two alleles necessary for expression of a high order of resistance.
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Claims 9
Claim · model-written summary
General combining ability variance for yield was of a high order in the Setaria population.
- Taxon
- S. sphacelata
Setaria sphacelatae0 - Outcome
- general combining ability variance for yielde1
- Direction
- high ordere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The progeny of a 7 x 7 diallel cross between plants randomly selected from a segregating tetraploid setaria population (S. sphacelata var. sevicea and var. splendida) was studied”
e1“Genetic analysis indicated a high order of general combining ability variance for yield in the population”
Claim · model-written summary
Yield showed a strong positive genetic correlation between seasons.
- Taxon
- S. sphacelataSetaria sphacelatae0
- Material
- segregating tetraploid setaria populatione0
- Outcome
- genetic correlation between seasons for yielde2
- Direction
- strong positivee2
- Value
- rg = 0.72-1.26e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The progeny of a 7 x 7 diallel cross between plants randomly selected from a segregating tetraploid setaria population (S. sphacelata var. sevicea and var. splendida) was studied”
e2“strong positive genetic correlation between seasons for yield (rg = 0.72-1.26)”
Claim · model-written summary
Variance estimates from analysis of variance and from parent-offspring regression were comparable.
- Taxon
- S. sphacelataSetaria sphacelatae0
- Outcome
- Variance estimatese3
- Direction
- comparablee3
- Comparator
- parent offspring regressione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The progeny of a 7 x 7 diallel cross between plants randomly selected from a segregating tetraploid setaria population (S. sphacelata var. sevicea and var. splendida) was studied”
e3“Variance estimates derived from analysis of variance and parent offspring regression were comparable”
Claim · model-written summary
Genetic variance for days to flower and flower head number was strongly and consistently additive.
- Taxon
- S. sphacelataSetaria sphacelatae0
- Outcome
- days to flower and flower head numbere4
- Qualifier
- strongly and consistently additivee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The progeny of a 7 x 7 diallel cross between plants randomly selected from a segregating tetraploid setaria population (S. sphacelata var. sevicea and var. splendida) was studied”
e4“Genetic variance was strongly and consistently additive for days to flower and flower head number”
Claim · model-written summary
Genetic correlations between seasons and years for days to flower were positive and indicated that genetic differences in flowering were not strongly confounded by environmental effects.
- Taxon
- S. sphacelataSetaria sphacelatae0
- Material
- segregating tetraploid setaria populatione0
- Outcome
- genetic correlations between seasons and years for days to flowere5
- Direction
- Positivee5
- Value
- rg = 0.31-1.09e5
- Qualifier
- not strongly confounded by environmental effectse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The progeny of a 7 x 7 diallel cross between plants randomly selected from a segregating tetraploid setaria population (S. sphacelata var. sevicea and var. splendida) was studied”
e5“Positive genetic correlations between seasons and years for days to flower (rg = 0.31-1.09) indicated that genetic differences in flowering were not strongly confounded by environmental effects”
Claim · model-written summary
Dry matter yield was genetically correlated with flower head number and hence earliness to flower.
- Taxon
- S. sphacelataSetaria sphacelatae0
- Material
- segregating tetraploid setaria populatione0
- Outcome
- Dry matter yielde6
- Direction
- genetically correlatede6
- Value
- rg = 0.79-1.16e6
- Qualifier
- flower head number and hence earliness to flowere6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The progeny of a 7 x 7 diallel cross between plants randomly selected from a segregating tetraploid setaria population (S. sphacelata var. sevicea and var. splendida) was studied”
e6“Dry matter yield was genetically correlated with flower head number and hence earliness to flower (rg = 0.79-1.16)”
Claim · model-written summary
Days to flower was genetically correlated with flower head length.
- Taxon
- S. sphacelataSetaria sphacelatae0
- Material
- segregating tetraploid setaria populatione0
- Outcome
- Days to flowere7
- Direction
- genetically correlatede7
- Value
- rg = 0.71-0.91e7
- Qualifier
- flower head lengthe7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The progeny of a 7 x 7 diallel cross between plants randomly selected from a segregating tetraploid setaria population (S. sphacelata var. sevicea and var. splendida) was studied”
e7“Days to flower was genetically correlated with flower head length (rg = 0.71-0.91)”
Claim · model-written summary
Resistance to Pyricularia grisea was under genetic control in the Setaria progeny.
- Taxon
- S. sphacelataSetaria sphacelatae0
- Interactor
- Pyricularia grisea
Pyricularia griseae7pathogen - Outcome
- Resistancee7
- Qualifier
- under genetic controle7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The progeny of a 7 x 7 diallel cross between plants randomly selected from a segregating tetraploid setaria population (S. sphacelata var. sevicea and var. splendida) was studied”
e7“Resistance to the pathogen Pyricularia grisea was shown to be under genetic control”
Claim · model-written summary
Resistance may be controlled by a gene with tetrasomic inheritance requiring two alleles for a high order of resistance.
- Taxon
- S. sphacelataSetaria sphacelatae0
- Gene
- a gene exhibiting tetrasomic inheritancee7
- Outcome
- resistancee7
- Qualifier
- two alleles necessary for expression of a high order of resistancee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The progeny of a 7 x 7 diallel cross between plants randomly selected from a segregating tetraploid setaria population (S. sphacelata var. sevicea and var. splendida) was studied”
e7“The data suggested that resistance may be controlled by a gene exhibiting tetrasomic inheritance with two alleles necessary for expression of a high order of resistance”