Abstract:Background. The need for continuous breeding practice to develop new varieties of Calendula officinalisL. is induced by the accumulation of low-grade morphotypes in the already existing cultivars as a result of crosspollination.Materials and methods. Seeds selected from high-yielding biotypes of cv. ‘Kalta’ were treated with various mutagens for 18 hours, using 1000 seeds for each option. The mutation rate in the M1 generation and seed quality were determined, and plant viability was assessed under field condi… Show more
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