Morphological Evaluation of some Tomato Somaclones Variation under Field Conditions

The current study was carried out at the Department of Genetics, Faculty of Agriculture, Tanta University, Egypt.   The Experiment was carried out at a private farm, Kafr El-Sheikh, Egypt, during 2010 and  2015  seasons which including producing somaclones, greenhouse evaluation and  field experiment evaluation. Field evaluation experiment was conducted during 2015 season. Four tomato varieties, Super StrainB , Castle Rock, AdvantageII, and Edkawy were used in this study. Ten somaclones has been driven from each variety. Yield and yield components, quality and some physiological characteristics were evaluated for all tomato genotypes . The results showed highly significant differences among somaclones and their original cultivar in all studied traits. Generally, SE10 somaclone driven from Edkawy  gave the highest values of plant height, number of leaves and number of clusters, while the highest values of  number of branches /plant  were produced by SE1 driven from the same variety. The highest values of number of fruit/plant and total yield /plant as well as fruit firmness and fruit weight were recorded by  SA6 driven from Advantage II variety. The highest values of chlorophyll content was produced by SS5 driven from Super StrainB. Somaclone SA2 driven from Advantage II variety had the largest size. Somaclone SC7 driven from Castle Rock showed the highest mean of TSS%.