ISHS Acta Horticulturae 541: IV International Symposium on New Floricultural Crops
SAUSSUREA PULCHELLA AS A NEW CUT FLOWER |
| Authors: | N. Yamasaki, T. Nishiuchi |
| Keywords: | Native plant, New cut flower, Elite line, Open field cultivation, Facultative short day plants |
| Abstract:
Saussurea pulchella(Compositae) is a biennial wild plant native to Japan. Some elite selfed lines, flowering in a year from seeds, having deeper flower color, producing a higher number of inflorescences with shorter peduncles, were selected. The optimal temperature for seed germination was 15°C. When the seeds were sown from February to May the plants flowered in the same year, although seeds sown from July to September produced rosettes and the plants flowered in the next year. Plants from seeds sown in March or April, planted at a density of 446/a with 0.5 kg/a of N-P-K, pinched above the 6th node in August, flowered in October with a higher number of high quality cut flowers in the field. Bolting from rosette plants from seeds sown in October was enhanced under LD conditions in both heated (min.10°C) and non-heated greenhouses, but flowering of the plants was delayed under LD conditions. The results suggest that flowering of S.pulchella can be controlled by photoperiod. | |
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