Tomato Varieties with High Indices of Productivity and Resistance to Environmental Factors

Abstract

In this paper, the results of the complex evaluation of valuable morphobiological and agronomic characteristics of tomato varieties, created at the Institute of Genetics and Plant Physiology of the Academy of Sciences are presented. In order to demonstrate the variability of agronomic characters and to specify the value of analyzed genotypes, their comparative evaluation was carried out by some of biological parameters: yield, production rate, average fruit weight, vegetation period, pericarp thickness, resistance to heat and cold stress. The varieties Jubiliar 60/20, Prestij, Elvira, Mihaela, Milenium and Tomiş have determinate growth and are distinguished by plant height, precocity, yield and production. Also, these varieties differ by the important fruit characters as well as mass (large and medium), shape (round, flat-round and cylindrical), the number of lodge (2-3 and above), pericarp thickness (medium and large) and mesocarp thickness (medium, large and extra large). The evaluated varieties manifest increased productivity and good taste properties. The results identify the genotypes that combine precocity, high productivity and resistance to environmental factors. These can serve as initial material for breeding

Keywords

• tomato, breeding, resistance, cold, draught

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