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Propagation of bulbs by twin-scaling


, : Propagation of bulbs by twin-scaling. Garden, UK 108(10): 402-405

The method of preparing twin-scales (pieces of two adjacent scales joined by a more-or-less triangular piece of basal plate) is described and illustrated. After incubation in polyethylene bags at 15-22 degrees C for 12-16 weeks, twin scales and their bulbils are planted in sterilized compost. The bulbs should reach flowering size in 3-4 years. A Narcissus bulb with a 10 cm circumference should yield 32 twin-scales plus 8 central chips, and 70% of these should form a bulbil.

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Related references

Klingaman, G.L.; Henderson, T., 1994: Propagation of amaryllis bulbs by twin scaling. Hortscience 29(7): 736

Lumsden, D.V.ctor; Stuart, N.W., 1941: Propagation of Easter lilies hastened by scaling the bulbs. This reports exptl. work on propagation of Lilium longiflorum by scaling. The greenhouse method involves the removing of scales of bulbs in Aug. and Sept., placing them in rows in flats of sand in an upright position so the upper half is exposed....

Hanks G.R., 1986: The effect of temperature and duration of incubation on twin scale propagation of narcissus and other bulbs. The effect of tmeperature (13-24.degree. C) and duration (8-16 weeks) of incubation during twin-scale propagation was examined in a range of Narcissus cultivars and in Hippeastrum hybridum, Hyacinthus orientalis and Nerine sarniensis. In Narcissus...

Rees, A.; Hanks, G., 1980: The twin-scaling technique for narcissus propagation. Acta Horticulturae: (109) 211-216

Hanks, G.R.; Jones, S.K., 1986: Notes on the propagation of Narcissus by twin-scaling. The history of the twin-scaling technique is briefly discussed and the methods of bulb preparation for twin-scaling, cutting twin-scales, incubating twin- scales and growing the bulbils are described. Although the technique is described with refer...

Ault, J.R., 1995: In vitro propagation of Eucomis autumnalis, E. comosa, and E. zambesiaca by twin-scaling. Shoots formed in vitro from twin-scale explants of E. autumnalis, E. comosa and E. zambesiaca cultured on MS basal medium containing 0.0, 4.4, 11.1 or 22.2 micro M BA plus 0.0 or 5.4 micro M NAA. In all 3 species, shoot proliferation was obtained...

Tombolato, A.F.C.; Azevedo, C.; Nagai, V., 1994: Effects of auxin treatments on in vivo propagation of Hippeastrum hybridum hort. by twin scaling. Bulbs of cultivars Intokazi and Red Lion were divided longitudinally into 16 wedges and then cut again so that each cutting consisted of 2 scales attached to a portion of basal plate. The twin scales were treated with 1000 p.p.m. benomyl for 5 min...

Hanks G.R., 1985: Factors affecting yields of adventitious bulbils during propagation of narcissus by the twin scaling technique. Twin-scale productivity is highly variable, and an assessment of between-bulb differences in twin-scale productivity revealed only weak between-bulb effects, partly due to seasonal effects or to the inclusion of atypical bulbs. Differences in the...

Hanks G.R.; Shaik G.; Jones S.K., 1986: Bulbil production in narcissus the effect of temperature and duration of storage on bulb unit development and subsequent propagation by twin scaling. The growth of bulb components and carbohydrate content of Narcissus bulbs was followed during storage at 5-30.degree. C, and the productivity of twin-scale propagules cut from bulbs after these storage treatments was studied. Growth of daughter bu...

Rogers, R.; Leeuven, P.-Van, 1992: The protection of wild bulbs and the propagation of specialty bulbs in Turkey. Acta Horticulturae 2(325): 821-829