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

Year 2016, Volume: 2 Issue: 1, 15 - 22, 01.01.2016

Nadejda Mihnea Vasile Botnari Galina Lupascu

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

References

• Avdeev Iu I (1982). Tomato selection. Chisinau: Science, 284 pp.
• Baculina VA et al. (1982). Guidance on the testing of vegetable and root crops (1982) Moscow, Kolos,444 pp.
• Bakulina VA (1970). To the study of some agronomic characters of tomato fruits. Moscow, 12 pp
• Blashiuk IP (1983). Assessment of combining ability of tomato lines with genetic markers// Genetic and methodological aspects of the breeding of plants and animals. Kiev, Scientific thought, p.8-10.
• Dospehov BA (1979). Methods of Field Experience, Moscow, 416 pp.
• Ershova VD (1978). Cultivation of tomatoes in open field, Chisinau, 279 pp. (http://faostat.fao.org/), Food and Agriculture Organisation of the United Nations, 2009
• Ivackin AP (1979). Determination of the heat resistance of the vegetable crops on the growth response of seedlings after heating them at high temperatures. Guidelines, Leningrad, 9 pp.
• Juchenco AA (1988). Adaptive potential of crop plants: Ecological basis, Chisinau, Science, 767 pp.
• Juchenco AA (2005). Genetic nature of adaptive potential of cultivated plants. Identification and selection of plant gene pool. Sankt-Petersburg, p.36-101.
• Kilchevsckiy AV (1984). Assessment of general and specific adaptive ability of genotypes. Ecological genetics of plants and animals. Chisinau, p.44-45.
• Kilchevsckiy AV (1987). The main features of plant adaptive selection. Ecological genetics of plants and animals. Chisinau: Science, p.8-9.
• Kilchevsckiy AV and Hotileva LV (1997). Ecological plant selection. Minsk, 372 pp.
• Kuzeomensckiy AV (2004). Selection-genetic studies of mutant forms of the tomato. Harkov, 391 pp..
• Lapton VG (1981). Strategy of selection of grain crops for resistance. Genetic resources and plant selection for resistance to diseases, pets and abiotic factors. Materials of EUKARPIA L.’s 9-th Congress, p.49-64.
• Lupashku GA, Rotaru LI, Gavzer SI, Mihnea NI and Rotaru FV (2008). Features of interaction of tomato genotypes with species of genius Fusarium in different temperature conditions. Bio-ecology problems and their solution (Rzhavitinskoe second reading), Proceedings of the International Science Conference. Saransk, p.49-50.
• Mihnea NI, Graty MI and Graty BG (2002). Results of tomato selection for resistance to environmental stress. Harkov, p.106-108.
• Mihnea NI (2008). Phenotypic variability of valuable characters of tomato fruit. Current problems of plant genetics, plant physiology and plant improvement. Proceedings of the National Conference, Chisinau, p.567-573.
• Pivovarov VF (2003). Prospects of development of the priorities in the selection and seed growing of vegetable crops in the new economical conditions. International Scientific Conference. Priorities in selection and seed growing of agricultural plants in the 21st century. Moscow, p.65-81.
• Pivovarov VF, Dobrutskaya EG and Turdikulov BT (1990) Problems of ecological selection of vegetable crops// Intensive horticulture. Gorky, p.57-63.
• Guidelines for the conduct of tests for distinctness, uniformity and stability. TG/44/7, UPOV, 1992. Smirnova VS, Garanko IB (1990), Guidelines. Diagnosis of cold resistance of cultured tomato. Leningrad, p.24.
• Iurlova EV (2006). Assessment of tomato for resistance to unregulated abiotic factors. Jurnal of agricultural sciences :27-36.