Tomatois a self-pollinated fruit berry which is botanically known as Lycopersicon esculentum (Foolad MR,2007).
Tomato is cultivatingworldwide and second in rank after potato (Khattak et al., 2007). It is belongs to the family solanaceae and thecultivation of tomato begins from Maxico and south America (Jenkins, 1948). Tomatois a tropical crop, it withstands to high temperature but cannot tolerate tofrost (Hartz TK & Miyao G, 1997).
According to (MNFSR, 2015-16) report thearea in Pakistan for both Rabi and Kharif tomato cultivation was 62536 hectareswith production of 587111 tons. In KPK tomatoes were grown on 13591 hectaresand the production was 129964. Tomato is a cheapest source ofvitamins and minerals. Tomatofruit contain enough Vitamin A and C and contains 93.8g water, 1.2g protein,4.8g carbohydrate, 0.
5mg carotene (Nkansah GO et al., 2003). Physiological mature tomatoes have higher vitamin Acontent than fully mature tomatoes, but red tomatoes contain lycopene, ananti-oxidant that may contribute to protection against carcinogenic substances.Maturation of tomato is due to chlorophyll degradation as well as synthesis oflycopene and other carotenoids (Fraser D etal.
, 1994). Three factors that affect the quality of tomato towardsconsumers are physical appearance (colour, size, shape, defects, and decay),firmness, and taste. Tomato breeding required meaningful efforts for improving yield,fruit size, appearance of fruit (without defects and appealing colour), diseaseresistant, including firmness offruit and shelf life for export and import (Colombani VS et al., 2001).
For fresh market the tomato flavour, appearance, colour, andhandling are considerable characteristics while viscosity and solids importantfor processing industry. In breeding program the agronomic aspects are very importantwhich enabled the industry for genuine production of tomato under differentclimatic and environmental conditions (Schuch W & Bird C, 1994).