THE EFFECT OF BORIC ACID APPLICATION ONECOPHYSIOLOGICAL CHARACTERISTICS OFSAFFLOWER VARIETIES {CARTHAMUS TINCTORIUS L.)

摘要

In this study, different concentrations (0, 5, 10, 15 mM) o f boric acid were applied on three varieties o f safflower (Balci, Dinner, Remzibey), and germina-tion 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 deter-mined that the total chlorophyll content decreased in the Balci and Remzibey varieties. According to the results, the most sensitive variety against boron is Remzibey, and the most tolerant variety is Balci. The Dinner variety is closer to the Balci variety in terms o f its boron tolerance.