Ali Izzo1*, A.M. Murie 2 Ali Hmdan2, and Wafaa Zahde 1
1Scientific Agricultural Research Center of Tartous, Tartous, Syria.
2 General commission for scientific Agricultural Research (GCSAR), Damascus, Syria.
(*Corresponding author: Ali Izzo; E-Mail: izzo198899@gmail.com).
Received: 17/ 02/ 2025 Accepted: 8/ 05/ 2025
Abstract
The research was conducted at Al-Jammasah station – Agricultural Research Center in Tartous- Syria, during (2021-2022) seasons in order to estimate relative, superior and standard heterosis for yield and some other traits of tomato in twenty-eight hybrids produced by half-diallel crossing method of eight lines. Randomized complete block design with three replications were used. Most hybrids were characterized by high significant heterosis values for all studied traits compared to mid parents, better parents and standard hybrid for all studied traits. Heterosis reached (39.39, 39.39, 33.33) % for plant yield, (57.15, 39.89, 75.04) % for the number of flowers per cluster, (88.64, 62.75, 93.02) % for the number of fruits per cluster, (6.62, -, 13.47) % for fruit length, (28.00, 25.00, 43.33) % for number of locules per fruit, (16.13, -, -) % for pericarp thickness, and (27.13, 25.76, 15.70) % for firmness, compared to mid parents, better parent and standard hybrid, respectively. Based on the results of the study, the hybrids (Na10×Na25 – Na12×Na24 – Na6×Na25) could be considered as promising hybrids for yield and fruit quality traits to continue working on.
Keywords: Tomato, Heterosis, yield.
Full paper in Arabic: pdf