Dynamics of the flavonoids content in some tomato cultivars from North-East Romania

Abstract

The aims of the present work were to determine effects of salt stress on the flavonoids content in some tomato cultivars, to find the differeces of salt response in these cultivars. The impact of excess soil salinity on crop productivity is sometimes disastrous which results, in the identification and design of new genotypes of plants tolerant to osmotic stress conditions. Flavonoids, the most common group of polyphenolic compounds that are found ubiquitously in plants. The biological material was represented by local tomatoes populations collected from areas with saline soils from Moldavia region and compared with commercial type salt-tolerant tomato. The bifactorial experience was conducted in a pots experiment in randomized blocks with four repetitions. Ten tomato genotypes studied were subjected to salt stress for a period of 30 days is constantly wetted with saline solution to a concentration of 100 mM and 200 mM. Determination of flavonoids content of leaves was done by the spectrophotometric method. The results show that seven genotypes maintain a high level of flavonoids in the exposure of the two different solutions concentration compared to untreated.