MORPHOLOGICAL AND CHEMICAL CHARACTERIZATION OF HYPERFLOWERING IN MICROPROPAGATED STRAWBERRY PLANTS (CV. GORELLA)
Comparison of hyperflowering and normal clones indicated that the rhythms of leaf and runner production and, consequently, their number, as well as the area and petioles length of mature leaves were identical in both plant types. Similarly, cytokinin levels within xylem sap and phloem exudate collected from leaves during the vegetative phase of the plants were unaffected by the number of subcultures. Measurements of cytokinin levels during the reproductive phase are in progress. In conclusion, discrimination between normal and hyperflowering plants is feasible only after the examination of the reproductive structures. The increased number of flowers per inflorescnece, resulting partly from an enhanced ramification of the cyme, is the only valid criterion to detect hyperflowering plants.