Abstract
1. The parents involved in the gene analysis of weight per locule in tomato hybrids were Danmark (Lycopersicon esculentum Mill.), Red Currant (L. pimpinellifolium Mill.), and Johannisfeuer (L. esculentum Mill.). These were crossed in all possible combinations, and the P1, B1 to P1, F1, F2, B1 to P2, and P2 populations for each cross were included in the study. 2. A method of determining the contribution of each additional gene to weight per locule is illustrated for a hybrid in which the parents are differentiated by three pairs of genes. It can be applied to those cases in which the parents are differentiated by any number of pairs of genes. 3. The use of the expansion of the binomial for the following purposes is illustrated: To determine the number of different phenotypic classes, the proportion of each phenotype expected in the population, the scale appropriate for measuring the environmental variability of each theoretical genotype on the basis of the hypothesis advanced, and the theoretical means of the genotype. 4. The data for the Danmark x Johannisfeuer hybrid are most logically interpreted on the basis that the parents are differentiated by two or three major gene pairs; and the data for the Danmark x Red Currant hybrid, on the basis that the parents are differentiated by polygenes (ten or more pairs of genes). 5. As would be expected from a study of the Danmark x Johannisfeuer and the Danmark x Red Currant hybrids, the parents of the Johannisfeuer x Red Currant hybrid were found to be differentiated by a large number of minor gene pairs, and both types of genes, those individually having major effects and those individually having minor effects, were found to be segregating in the hybrid populations. Only a few (probably two or three) major pairs of genes were segregating in the hybrid populations of the Johannisfeuer x Red Currant cross.
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Claims 7
Claim · model-written summary
A method was illustrated for estimating each additional gene contribution to weight per locule.
- Taxon
- Tomato
Solanum lycopersicumt0 - Outcome
- contribution of each additional gene to weight per loculee0
- Value
- three pairs of genese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A method of determining the contribution of each additional gene to weight per locule is illustrated for a hybrid in which the parents are differentiated by three pairs of genes.”
t0“Tomato Hybrids”
Claim · model-written summary
Binomial expansion was illustrated for theoretical phenotype classes, proportions, variability scales and genotype means.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- number of different phenotypic classese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of the expansion of the binomial for the following purposes is illustrated: To determine the number of different phenotypic classes, the proportion of each phenotype expected in the population, the scale appropriate for measuring the environmental variability of each theoretical genotype on the basis of the hypothesis advanced, and the theoretical means of the genotype.”
t0“Tomato Hybrids”
Claim · model-written summary
Danmark and Johannisfeuer differ by two or three major gene pairs for weight per locule.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- Danmark x Johannisfeuere0
- Outcome
- parents are differentiatede0
- Value
- two or three major gene pairse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Danmark x Johannisfeuer hybrid are most logically interpreted on the basis that the parents are differentiated by two or three major gene pairs”
t0“Tomato Hybrids”
Claim · model-written summary
Danmark and Red Currant differ by at least ten pairs of polygenes.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- Danmark x Red Currante0
- Outcome
- parents are differentiated by polygenese0
- Value
- ten or more pairs of genese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Danmark x Red Currant hybrid, on the basis that the parents are differentiated by polygenes (ten or more pairs of genes).”
t0“Tomato Hybrids”
Claim · model-written summary
Johannisfeuer and Red Currant differ by many minor gene pairs.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- Johannisfeuer x Red Currante0
- Outcome
- differentiated by a large number of minor gene pairse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the parents of the Johannisfeuer x Red Currant hybrid were found to be differentiated by a large number of minor gene pairs”
t0“Tomato Hybrids”
Claim · model-written summary
Major- and minor-effect genes both segregated in the Johannisfeuer × Red Currant hybrid populations.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- segregating in the hybrid populationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both types of genes, those individually having major effects and those individually having minor effects, were found to be segregating in the hybrid populations”
t0“Tomato Hybrids”
Claim · model-written summary
Only about two or three major gene pairs segregated in Johannisfeuer × Red Currant hybrid populations.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- Johannisfeuer x Red Currante0
- Outcome
- major pairs of genes were segregatinge0
- Value
- two or threee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only a few (probably two or three) major pairs of genes were segregating in the hybrid populations of the Johannisfeuer x Red Currant cross.”
t0“Tomato Hybrids”