The Influence of Substrate, of the Planted Bulb Diameter and of Interaction Substrate x Planted Bulb Diameter upon the Number of Bulbs/Plant in Polyanthes tuberosa
Abstract
Polianthes tuberosa (Tuberose) is originally from Mexico and is the best known and cultivated species of the genus Polianthes (Sonea et al., l979; Şelaru, 2007). In order to support tuberose lovers and growers, for leisure or economic purposes (Cantor and Pop, 2008), Polianthes tuberosa (tuberose) was introduced in the collection of flower species of the Fruit Research Station Cluj, and was monitored over several years of growth. The study monitored morphological and decorative characters, productivity, technological and behaviour characteristics of the species and its use. In terms of multiplication of tuberose, number of bulbs per plant is a determining factor. The rate of multiplication of the species depends directly on the number of trained replacement bulbs. The bifactorial experiment focused on the influence of the culture substrate and the diameter of planted bulbs on the number of bulbs per plant, and therefore plant productivity. Based on the resulted data it can be concluded that the two experimental factors significantly influenced the average number of formed replacement bulbs/ plant.
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