ISHS Acta Horticulturae 454: III International Symposium on New Floricultural Crops
STORAGE AND FORCING TEMPERATURES AFFECT INFLORESCENCE INITIATION, FLOWERING AND FLORET BLAST OF LACHENALIA ALOIDES 'PEARSONII' |
| Authors: | Mark S. Roh, A. Grassotti, L. Guglieri |
| Abstract:
The effect of bulb storage and forcing temperature on inflorescence initiation, flowering, and inflorescence blast (floret blast) of L. aloides Engl., 'Pearsonii' was investigated. Shoot apices of bulbs stored at 25°C became reproductive in 90 days, while bulbs stored at 15°C remained vegetative for 150 days. When forced in September, all plants flowered in 72 days regardless of bulb storage temperatures. However, when forced in July, less than 60% of plants flowered in 205–214 days. When bulbs were stored at 15°C before potting followed by forcing at 23°C, flowering was delayed and 5% of plants flowered. The delay in flowering and low flowering percentage resulted from floret blast. The floret blast is attributed to pre-mature development of floral organs, such as outer and inner perianth as well as stigma and anthers when plants were subjected to high temperatures. | |
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