دراسة التغيرات النسيجية لثمار البندورة (الطماطم)‎ عند مراحل قطاف مختلفة

Abstract EN

The study was carried out in Fairuzah region–Homs Governorate by planting two cultivars of processing tomato Lycopersicum esculentum cv.

Turkish Oula cultivar and American Star cultivar.

The experimental plots were irrigated by using drip irrigation system (GR).

The objective of this research is to study the impact of maturity stage at harvest three stages on some attributed processing of tomato fruit even natural properties such as fruit texture or chemical properties such as : pH, TSS, Ca+2, Fe+2 and Vitamin C Results showed that the third stage of maturity showed significantly increasing in the fruit content of Fe+2 for both Variety compared the first stage and the second by 6.6 % and 12.4 % respectively.

The third stage has the same beaver for TSS content of fruit and the increasing percent were 11.9 % and 18.5 % for the first and the second maturity stage respectively The first stage showed increasing in the pH, Ca+2 and The fruit hardness compared to the second and the third stage by 2.9 % for pH, 10.4 % for Ca+2 and 8.9 % for the hardness for the second stage and the previous percents for the third stage were 5.47 %, 20.45 % and 14.66 respectively.

Each of fruit diameters by 7.44-12.67 % for both the first and the second maturity stage respectively.

TSS by the fruit content of Fe+2 by 12.4-6.6 % for both the first and the second maturity stage respectively, fruit weight by 34.6-19.69 % for both the first and the second maturity stage respectively.

On the other hand, the second maturity stage showed the highest content of Vitamin C in fruit comparing to the third stage 17.5 % and the first stage 24.9 % .with comparing the tomato variety, the Oula Varity showed high quality for TSS, vitamin C content and Fe+2 percent but the Star showed high quality for pH and Ca+2.