Abstract
The Increase of tomato production can be done through the improvement of superior genotypes that have high production components even though they are planted in the lowlands. Information on components inheritance of tomato production in the lowlands is very important to determine the effective selection method for the development of lowland tomatoes. This study aimed to study the pattern of components inheritance of tomato products in the lowlands. This study used an analysis of six generations, namely P1, P2, F1/F1R, BCP1, BCP2, and F2 through a joint scaling test. The results showed that the characters of fruit length, fruit diameter, fruit size, weight per fruit, fruits number per plant were controlled by many genes, and there were no maternal effects. Gene action for fruit length character was duplicate epistasis and additive dominance, for fruit diameter characters were additive dominance and complementary epistasis, duplicate epistasis and additive dominance for fruit size characters, duplicate epistasis for per fruit weight, several fruits per plant and fruit weight per plant.
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