GENETICS AND PHYSIOLOGY OF PARTHENOCARPY IN TOMATO

Parthenocarpic tomatoes (Lycpersicon esculentum Mill.) cv.
Severlanin was significantly higher in early yield and percentage fruit set under cold weather conditions than other genotypes evaluated; viz, Floradade, Peto 86, UCX 78 W 29 and VF 145-B-7879.

Genetic studies were conducted on parents, F₁, F₂ and backcross (BC) plants of the crosses Severlanin x UC 82 and Severianin x VF 145-B-7879 and their reciprocals.
Characters studied were percentage fruit set and percentage parthenocarpic fruits produced under cold weather conditions.
Both characters were found to be controlled by a single recessive gene which is basically the gene responsible for parthenocarpy.

Gibberellins (GAs) content of flower ovaries was nearly 3 times in cv.
Severianin as in cvs UC 82 or VF 145-B-7879. No notable differences were observed between F₁ plants and their seeded parents or between reciprocal hybrids.
These results were in accordance with the genetic studies and pointed to the importance of a high GAs content in flower ovaries for parthenocarpic fruit set in tomatoes.

II International Symposium on Processing Tomatoes, XXII IHC

A.A. Hassan, M.M. Marghany, W.L. Sims

https://doi.org/10.17660/ActaHortic.1987.200.16