Abstract
This study was conducted to assess the influence of gibberellic acid (GA3) and arbuscular mycorrhizal fungi (AMF) on the flowering and quality of Zantedeschia albomaculata (Hook.) Baill ‘Albomaculata’ plants. Before planting, the rhizomes were soaked in water or an aqueous solution of GA3 at a concentration of 150 mg dm−3 for 30 min. A mixture of AMF was applied to the rhizomes a week after planting. The AMF treatment increased the yield of inflorescences of the ‘Albomaculata’ cultivar by 100%. AMF and GA3 had a favourable effect on the quality of inflorescences, expressed by the length of peduncles, whereas AMF individually positively affected the length of the spathes. AMF and GA3 had no effect on the level of macroelements in calla lily leaves, with the exception of calcium (Ca). The leaves of mycorrhized plants had a high content of sodium (Na) and micronutrients, except for iron (Fe). The results of the study showed that GA3 could be replaced by mycorrhizal inoculation when applied to Zantedeschia plants.
Highlights
Calla lilies—Zantedeschia—are African plants of the Araceae family
Even though the flower yield can be increased with the application of gibberellic acid (GA3) [1,2,3,4,5,6], the risk of contamination via fertilizer solution, such as Pectobacterium carotovorum subsp. carotovorum [7], a pathogen bacteria associated with soft rot, is high and could seriously limit the production
This study was conducted to assess the influence of gibberellic acid (GA3) and arbuscular mycorrhizal fungi (AMF) on the flowering and quality of Zantedeschia albomaculata (Hook.) Baill
Summary
Calla lilies—Zantedeschia—are African plants of the Araceae family. They are mostly grown for cut flowers and they rank thirteenth in the flower trade in The Netherlands. Due to unsatisfactory flower harvests mainly because of the high prices of rhizomes produced abroad, Calla lilies are not so popular among Polish producers. Carotovorum [7], a pathogen bacteria associated with soft rot, is high and could seriously limit the production. According to Matysiak [8], arbuscular mycorrhizal fungi (AMF) stimulates flowering, because it produces growth regulators, including gibberellin. AMF are in symbiotic relationships with most wild and cultivated terrestrial plants except species belonging to the Brassicaceae and Chenopodiaceae families [9]. Mycorrhizal fungi facilitate the uptake of micro- and macronutrients in exchange for photosynthetic products [9]
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