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2°C until Stage base plate Beijer BULB DEVELOPMENT carpels centre completion of flower described Development I.S.D. diagrams Dissection of Narcissus Dry bulbs earlier early flowering early Pc stage exposed FISHERIES AND FOOD flower complete flower development flower formation flower initiation forcing G tulips Growers growth H.W.T. damage Hot Water Treatment identified Immediately after lifting initials of three inner petals Internal Stages iodine knife Laboratory late June later stages layer Majesty's Stationery Office ment microscope MINISTRY OF AGRICULTURE Narcissus and Tulip Narcissus Stage needle normal old flower stem onwards outer petals Perianth photographs Plant Pre-cooling push back reached Stage Pc removed roots leaving scales season September severely damaged spathe Stage G Stage Pc narcissus stages of development stages of preparation stamens Stanford Street TECHNICAL BULLETIN technique temperatures three inner three leaves tips tissue transverse Tulip Bulbs Tulip Stage usually visible warm storage Water Treatment H.W.T. weeks