Bulb quality and traumatic acid influence bulblet formation from scaling micropropagated Lilium species and hybrids

MARINANGELI PABLO; NÉSTOR CURVETTO

HORTSCIENCE

American Society for Horticultural Science

Lugar: Alexandria; Año: 1997 vol. 32 p. 739 - 741

0018-5345

Scaling is a common commercial technique to propagate Lilium. The present research work evaluated the impact of genotype, traumatic acid (TA) and initial bulb quality on bulblet production by scaling propagation. Genotype used were: L. longiflorum Thunb. ‘Snow Queen’, L. lancifolium Thunb., one Oriental hybrid (L. x ‘Stargazer’) and four Asiatic hybrids (L. x ‘Enchantment’, L. x ‘Connecticut King’, L. x ‘Sunray’, L. x ‘Cote d’Azur’). The genotypes showed a wide variability in the number (1.1-2.6 bulblets per scale) and biomass (83-295 mg per bulblet) of bulblet production. The same variability was exhibited after treatment with TA, which produced an increase of 20 to 40 % in the number of bulblets per scale and also a significant increase in their fresh mass (20-60%). Using poor quality L. x ‘Cote d’Azur’ bulbs adversely affected the biomass and number of bulblets produced on the scales, and this effect was not overcome with TA treatment. Chemical name used: 10(E) dodeca-1,12-dicarboxylic acid (traumatic acid).