Role of Sucrose in Bud Development and Vase Life of Cut Liatris spicata (L.) Willd.

Abstract

<jats:p>Sucrose addition to the vase solution improved the postharvest qualities of cut liatris by increasing the length of inflorescences showing color and by prolonging the vase life of the spikes. The main effect of sucrose was on the development and opening of the flower heads with minimal effect on their longevity. Pulsing with concentrations of sucrose ≥10% for 20 hours prolonged the vase life of the spikes. Responses of spikes to the pulsed treatment varied greatly due to the differences in their degree of leafiness, thus limiting its commercial application. A continuous supply of 2.5% or 5% sucrose in the vase solution allowed most of the flower heads on the spikes to develop and doubled the vase life of the spikes.</jats:p>

Influence of Variation in Plant Characteristics Caused by Bulb Weight on Inflorescence and Individual Flower Longevity of Asiatic Hybrid Lilies after Harvest

“…The constant longevity of individual flowers within inflorescences which was observed (Fig. 2B) has also been observed in Liatris (Han, 1992), Gladiolus (Yamane et al, 1993), and Freesia (Spikman, 1989). In Freesia individual flower longevity remained constant even when sucrose was supplied (Spikman, 1989).…”

“…In Freesia individual flower longevity remained constant even when sucrose was supplied (Spikman, 1989). Liatris individual flower heads required sucrose for complete opening, after which longevity was not further influenced by the amount of sucrose supplied (Han, 1992). In both cases, an artificial sugar supply increased the number of floral buds opening and, therefore, longevity of the inflorescence.…”

“…3). As floral bud opening often is mediated by sugar supply (Han, 1992;Spikman, 1989) failure of bud opening could be due to carbohydrate depletion, that can be expected to occur with a large increase in number of buds per inflorescence as within 'Bright Beauty' and 'Orlito'. Also differences in carbohydrate status among cultivars can be expected, that could explain the relatively low number of floral buds that reach anthesis within 'Harmony'.…”

Regulation of flower pigmentation and growth: Multiple signaling pathways control anthocyanin synthesis in expanding petals

“…The use of sugars to promote flower development and pigmentation is common practice, and most pulsing and holding solutions applied to cut flowers include sucrose (Suc) ( Halevy and Mayak 1981). Increased Suc concentration enhanced petal growth and pigmentation in detached flowers of Eustoma grandiflorum ( Kawabata et al 1995), Hyacinthus orientalis ( Hosokawa et al 1996), Liatris spicata ( Han 1992) and rose ( Kuiper et al 1991). Several studies have shown that sugar level increases during petal development to a maximum at the stage of rapid cell expansion ( Tsukaya et al 1991; Bieleski 1993; Clement et al 1996).…”

Effects of sugars on the growth and chlorophyll content in excised tulip stem in the presence of Indole-3-acetic acid

“…It is well known that sugars prevent senescence of cut flowers and vegetables. Sucrose improved the postharvest life of cut flowers of Limonium (Doi and Reid, 1995), Liatris (Han, 1992), Eustoma grandiflorum (Cho et al, 2001), and many other species. Sucrose supply increased longevity and inhibited chlorophyll degradation of broccoli (Brassica oleracea) branchlets (Irving and Joyce, 1995).…”