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The effects of long days on the flowering of spray carnations

Acta Horticulturae (51): 225-235

The effects of long days on the flowering of spray carnations

Studies were carried out on the cvs Sam's Pride, Scarlet Miniqueen and Royalette. When most of the shoots had 7-9 expanded pairs of leaves incandescent illumination at 20 W/m2 was given for 2, 3 or 4 weeks during the night, starting on 14 February. The 4-week treatment gave the best results, inducing flowering 23, 18 and 17 days earlier, respectively, for the 3 cvs compared with the non-illuminated control.

Accession: 000538204

Related references

Yonemura, K.; Ohishi, K.; Osuga, M., 1981: Effect of planting time and long day treatment on the growth and flowering of spray carnations. Spray carnations planted in a greenhouse in February, April or June required the shortest time from pinching to flowering compared with those planted in August or October, which required the longest time. Planting in April or June led to cut flowe...

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