Izsējas normas ietekme uz ārstniecības kliņģerīšu (Calendula officinalis L.) ziedu diametru | Influence of sowing rate on calendula (Calendula officinalis L.) flowers’ diameter
2014
Sausserde , R., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture. Inst. of Agrobiotechnology
Calendula (Calendula officinalis L.) is an annual plant and belongs to the Asteraceae family. It is a medicinal plant and its flowers are used as important ingredient of pharmaceutical, cosmetic and food production. The aim of this study was to evaluate influence of sowing rate on flowers diameter of calendula. The trial was carried out in the Research and Study Farm „Vecauce” during 2014. Six calendula cultivars ‘Cream Beauty’, ‘Greenheart’, ‘Indian Prince’, ‘Pink Surprise’, ‘Radio’ and ‘Santana’ were sown using three sowing rates: 6 kg haE-1, 9 kg haE-1 and 12 kg haE-1. Flowers’ diameter was measured during flowering period. During investigation period, there were noted that flower size decreases (except cultivar ‘Radio’) increasing sowing rate. The biggest flowers were obtained using sowing rate 6 kg haE-1. The biggest flowers were noted for cultivars ‘Greenheart’ (8.2 cm), ‘Cream Beauty’ (7.0 cm) and ‘Santana’ (7.0 cm) using sowing rate 6 kg haE-1, but cultivar ‘Radio’ has biggest flowers when sowing rate 9 kg haE-1 was used. Cultivar ‘Indian Prince’ sown at the sowing rate 12 kg haE-1 produced the smallest flowers (4.8 cm). According to the obtained data, flower size of calendula was significantly (p is less than 0.05) influenced by the used sowing rate (by 13%), as well as selected cultivar (by 78%). The interaction of both factors affected flower size at about 5%.
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