Floral initiation under continuous light in <italic>Pharbitis nil</italic>, a typical short-day plant

Abstract

Seedling-cuttings of Pharbitis nil, a typical short-day plant, initiated floral buds under continuous light of 2200–2400 lux at 24–26°C. When cultured under poor-nutritional conditions, the node bearing the first floral bud was as low as the 4th one. A close relation between floral initiation under continuous light and retarded vegetative growth was observed.