Abstract
Tomato fruit firmness is a polygenetic trait and depends on firmness components pericarp thickness, firmness of epidermis and firmness of flash. The accumulation of favourable traits ratio for each component (towards the increase of expression) the fruit firmness can be increased. This paper deals with aspects of increasing fruit firmness by increasing firmness of epidermis and thickness of pericarp. By using genotypes with rin (ripening inhibitor) gene, we were able to accomplish great firmness of fruits, especially firmness of flash. The expression of these traits cause the asynchronization of maturing process so the fruits do not over mature or soften. Genetic effects have been evaluated by researching the average values of fruit firmness in six diallel parent lines (D-150, S-49, S-35, H-52, Kg-z and SP-109) and progeny (P1, P2, F1, F2, BC1 and BC2) by applying additive dominant model with three and six parameters (Mather and Jinks, 1982). Mean values of fruit firmness for parents and progeny were significantly different. Firmness of fruits is a trait influenced first of all by additive gene since they were found in all researched combinations. Epystatic gene effect was important in inheriting process for all three two-gene interactions. The stabile duplicate type of epystsase was found, which in this case reduces the unfavourable effects of dominant genes of parents with soft fruits. .
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Claims 7
Claim · model-written summary
Fruit firmness was described as polygenic and dependent on pericarp, epidermis and flesh firmness.
- Taxon
- Tomato
Solanum lycopersicume0 - Outcome
- fruit firmnesse0
- Qualifier
- pericarp thickness, firmness of epidermis and firmness of flashe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato fruit firmness is a polygenetic trait and depends on firmness components pericarp thickness, firmness of epidermis and firmness of flash.”
Claim · model-written summary
Genotypes with rin produced high fruit firmness, especially flesh firmness.
Not reportedTaxon
Verbatim
e0“By using genotypes with rin (ripening inhibitor) gene, we were able to accomplish great firmness of fruits, especially firmness of flash.”
Claim · model-written summary
Expression of these traits disrupted maturation synchrony, preventing overripening and softening.
Not reportedTaxon
Verbatim
e0“The expression of these traits cause the asynchronization of maturing process so the fruits do not over mature or soften.”
Claim · model-written summary
Parent and progeny mean fruit firmness differed significantly.
Not reportedTaxon
Verbatim
e0“Mean values of fruit firmness for parents and progeny were significantly different.”
Claim · model-written summary
Additive genes were the main influence on fruit firmness across combinations.
Not reportedTaxon
Verbatim
e0“Firmness of fruits is a trait influenced first of all by additive gene since they were found in all researched combinations.”
Claim · model-written summary
Epistatic gene effects were important in inheritance of all three two-gene interactions.
Not reportedTaxon
Verbatim
e0“Epystatic gene effect was important in inheriting process for all three two-gene interactions.”
Claim · model-written summary
Stable duplicate epistasis reduced adverse dominant gene effects from soft-fruited parents.
- Outcome
- unfavourable effects of dominant genese0
- Direction
- reducese0
- Qualifier
- stabile duplicate type of epystsasee0
Not reportedTaxon
Verbatim
e0“The stabile duplicate type of epystsase was found, which in this case reduces the unfavourable effects of dominant genes of parents with soft fruits.”