The Performances of Some Tomato Pure Lines under Cold Stress in the Vegetative and Generative Stage

Authors : Akın TEPE, Volkan GÖZEN, Aylin KABAŞ, Volkan TOPÇU, Orçun ÇINAR

Pages : 56-62

Doi:10.16882/hortis.1122901

View : 15 | Download : 10

Publication Date : 2022-06-13

Article Type : Research Paper

Abstract :Especially, in tomatoes occur due to low temperature stress serious yield and quality decreases in greenhouse conditions. For successful tomato cultivation under the cold stress, cultivars performances are extremely important both vegetative and reproductive growth stage. In this study, 20 tomato pure lines and 3 commercial cultivars insert ignore into journalissuearticles values(Cigdem F1, Anit F1 and Bestona F1); and also Solanum hirsutum insert ignore into journalissuearticles values(LA 1777); known as tolerant genotypes were evaluated at vegetative and reproductive stage. The studies were conducted under both the cold stress in growth chamber and the optimal temperature condition insert ignore into journalissuearticles values(control); in the greenhouse. They were evaluated by measuring malondialdehyde insert ignore into journalissuearticles values(MDA);, electrolyte leakage insert ignore into journalissuearticles values(EL); and dry matter yield insert ignore into journalissuearticles values(DM); at vegetative stage. The results showed that EL rate and MDA content increased while DM decreased under the cold stress when compared with leaves of plants grown at optimal temperature. In reproductive stage, pollen viability and pollen germination were evaluated under both cold stress and control conditions for all genotypes. All the sensitive genotypes exhibited low pollen viability and pollen germination. Consequently, three pure lines were identified with low-temperature tolerant in vegetative and reproductive growth stage.
Keywords : Cold stress, Electrolyte leakage, Malondialdehyde, Pollen germination, Tomato