Relationship between cell number, cell size and fruit size of seeded fruits of tomato (Lycopersicon esculentumMill.), and those induced parthenocarpically by the application of plant growth regulators
✍ Scribed by S. Bünger-Kibler; F. Bangerth
- Publisher
- Springer Netherlands
- Year
- 1982-1983
- Tongue
- English
- Weight
- 502 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0167-6903
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✦ Synopsis
Application of GA,, IAA or 4-CPA to tomato ovaries induced the development of parthenocarpic fruit, which showed different growth rates. In the pericarp cell division and cell enlargement was affected differentially . GA,-induced fruits had considerably less but larger cells than seeded control fruits, IAA treatment resulted in the same number of cells but these were smaller and 4-CPA treatment induced fruits with about 20% more cells. Reduction in cell number had a similar effect on final fruit size as diminution of cell size . A reduction in the number of cell division centres (area around vascular bundles) as well as changes in the degree of endoploidy are possible reasons for the observed reductions in cell numbers. Hormonal causes for the different number and size of pericarp cells after the various treatments are discussed .