EFFECT OF RHIZOME LOW TEMPERATURE TREATMENTS ON STEM LENGTH, NUMBER OF LEAVES AND CYMES PER INFLORESCENCE OF GENERATIVE STEMS OF ALSTROEMERIA. FIRST RESULTS
Low temperature treatments of rhizome before planting are referred to increase early flower production in Sanremo area (Italy). In this paper some morphological aspects of stems were determined to show eventual effects depending on rhizome low temperature treatments. Plants of 'Appelbloesem' and 'Regina' were propagated during summer in a greenhouse (test) or in a growth chamber at 10°C. Data about length of the stems, number of leaves and cymes per inflorescence were collected during the flowering period (late winter-early summer). Effect on the stem length and on the number of cymes varied depending on the specific propagation procedure and the cultivar. On the contrary the number of leaves decreased during the flowering period in both cvs. in any treatment. The earliest stems produced by the chilled plants showed the highest number of leaves; in 'Appelbloesem' the earliest stems on the test plants were more leafed than the ones of the chilled plants of the same harvesting period.
Cervelli, C. and Zizzo, G.V. (1992). EFFECT OF RHIZOME LOW TEMPERATURE TREATMENTS ON STEM LENGTH, NUMBER OF LEAVES AND CYMES PER INFLORESCENCE OF GENERATIVE STEMS OF ALSTROEMERIA. FIRST RESULTS. Acta Hortic. 325, 217-222