Morphological and physiological characters affecting flower drop and fruit set of tomatoes at high temperatures
✍ Scribed by A. Levy; H. D. Rabinowitch; N. Kedar
- Book ID
- 104617853
- Publisher
- Springer
- Year
- 1978
- Tongue
- English
- Weight
- 546 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0014-2336
No coin nor oath required. For personal study only.
✦ Synopsis
Seven tomato cultivars and lines were studied under high temperature conditions. Fruit set varied between 77.3% in the heat tolerant cv. Hotset, 62% in cv. Gamad and 16.3% in the most sensitive cv. Hosen-Eilon. The characters contributing to low fruit set were bud drop, splitting of the antheridial cone, style exsertion and reduction of the quantity and/or functionality of the gametes. Employing the above characters as criteria for selection, fruit set of an Fa line, phenotypically similar to the sensitive parent, was improved to 63.1%. Improved fruit set, 87.6%, was also obtained in an Fi hybrid between 'Hotset' and 'Gamad'. The importance is discussed of various easily recognizable flower components contributing to satisfactory fruit set under high temperatures and their possible use in breeding is elaborated.