THE EFFECT OF BORIC ACID APPLICATION ON ECOPHYSIOLOGICAL CHARACTERISTICS OF SAFFLOWER VARIETIES (Carthamus tinctorius L.)

Abstract

In this study, different concentrations (0. 5, 10, 15 mM) of boric acid were applied on three varieties of safflower (Balct, Dincer, Remzibey), and germination rate, root-stem length. root-stem fresh and dry weight, root-stem biomass. seed vigor index, boric acid tolerance index and chlorophyll a, b and changes in total chlorophyll content were investigated. It was determined that a high boric acid concentration causes a decrease in the ecophysiological parameters examined in the safflower varieties. It was determined that the total chlorophyll content decreased in the Balct and Remzibey varieties. According to the results, the most sensitive variety against boron is Remzibey, and the most tolerant variety is Balct. The Dincer variety is closer to the Balct variety in terms of its boron tolerance.