Increases in ethylene and carbon dioxide production by Tulipa gesneriana L. ‘Prominence’ after completion of the cold-requirement |
| |
Authors: | TA Prince RC Herner AA De Hertogh |
| |
Institution: | 1. Department of Horticulture, Michigan State University, East Lansing, Michigan 48824 U.S.A.;2. Department of Horticultural Science, North Carolina State University, Raleigh, North Carolina 27650 U.S.A. |
| |
Abstract: | Bulbs of Tulipa gesneriana L. ‘Prominence’ were either specially pre-cooled at 5 ± 0.5°C or held at 17 ± 0.5°C in a flow-through system equipped for atmospheric sampling. Bulbs at 17°C had low CO2 and C2H4 production rates until January when they began to increase. An initial peak of C2H4 production occurred during the 2nd week of pre-cooling, followed by a major increase after 12 weeks. In addition, bulbs were specially pre-cooled for periods of 2–16 weeks (2-week increments). The bulbs were then transferred to 17 ± 0.5°C, where initial periods of special pre-cooling of greater than 12 weeks resulted in a dramatic increase in respiration rate over bulbs cooled for less than 12 weeks. These increases in C2H4 and CO2 liberation appeared to be related to completion of the bulb cold-requirement. However, no surge of shoot elongation occurred after 12 weeks of pre-cooling and transfer to 17°C. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|