The Influence of Some Organic Medium Compounds on Multiplication of Gerbera in Vitro

Clonal Propagation of Ziziphus spina-christi by Shoot Tip Culture: I. Improved Inorganic and Organic Media Constituents for in vitro Shoot Multiplication

“…The 1X vitamins in this study resulted in an increase in shoot length and number of nodes which indicates the necessity of vitamin supplement in the Cidir culture media. This recommendation supports many previous investigations like Murashige (1974); Soozek and Hempel (1988); and Idris (1994). It is worthy to note that lack of modified White's organics or lower concentrations (0.5X) in the media significantly increased both the number and length of the lateral branches.…”

“…A similar observation was reported by Zhang and Stolts (1989) working on the propagation of Euphorbia fulgares, but due to the effect of another vitamin (inositol). The same effect of inositol was reported on tissue culture of Gerbera plant (Soozek and Hempel, 1988).…”

Effect of Vitamins on <i>In Vitro</i> Organogenesis of Plant

“…Also, Soczek and Hempel [39] studied the shoot multiplication of three Gerbera cultivars in the presence and absence of thiamine, pyridoxine, nicotinic acid and other compounds. It was concluded that reducing the concentration, to half or quarter of the Murashige et al [40] medium, or removing the vitamins, did not have any significance on growth over three passages (each 4 weeks), except in the case of one cultivar requiring nicotinic acid [39].…”

Effects of excess and deficient boron and niacin on the ultrastructure of root cells in Daucus carota cv. Nantes

“…A concentration of 32.4 μM nicotinic acid induced 76% embryogenesis (Barwale et al, 1986). It was concluded that reducing the concentration to half or quarter of the Murashige et al (1974) medium, or removing the vitamins, did not have any significant effect on growth over 3 passages (each 4 weeks), except in the case of 1 cultivar requiring nicotinic acid (Soczek & Hempel, 1988). It has previously been shown that B deficiency inhibits growth of the plant apex, which consequently results in a relatively weak apical dominance, and a subsequent sprouting of lateral buds.…”