Research on the Technological and Morpho-Anatomic Particularities on Forcing Bulbs of Iris Reticulata

Abstract Iris reticulata is one of the most appreciated flower species, being found in both field crops and greenhouse cultures. Our research has as a major objective the study of the influence of particularities of thermic regime from cold period upon the quality of the bulbs flowering. For planting we used bulbs distributed in three equal batches, for each batch, differentiating the period of cold necessary for the rooting of the bulbs. The cold period was provided in three variants: in the refrigerator (5°C), in a shade which climate similar to the outside (5°C), in the cellar (10°C). The introduction of bulbs planted in the greenhouse for forcing was performed for each of the three batches after 4, 6 and 8 weeks of cold storage. The microscopic preparations show that on begin of cold period all the floral elements are formed inside in the bulb. The best quality of the bulbs flowering was obtained on the variants which cold period occurred on the shade, at °5 C temperature.