Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56, 251-254
Published online 2014-11-14

The effect of chlormequat and paclobutrazol treatment on safflower (Carthamus tinctorius L.) growth and flowering

Jiří Uher

Ústav zelinářství a květinářství, Mendelova zemědělská a lesnická univerzita v Brně, Valtická 337, 691 44 Lednice, Česká republika

The responses of six safflower varieties (Carthamus tinctorius L.) to chlormequat and paclobutrazol treatments were monitored. Although a chlormequat application did not bring about any significant differences in flowering or morphological traits, plants treated with paclobutrazol were shorter and had a higher number of flower heads. However, contrary to expectations, treatment by paclobutrazol also made flowering earlier. This does not appear to support the idea that safflower is a typical long-day plant, progressing to floral induction and stem elongation after vernalization in the winter at the leaf-rosette stage).


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