EFFECTS OF DURATIONS OF 32 °C AND 20 °C POSTHARVEST BULB TREATMENTS ON EARLY FORCING OF IDEAL IRIS
- 30 June 1981
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Plant Science
- Vol. 61 (3) , 647-652
- https://doi.org/10.4141/cjps81-089
Abstract
The effect of the duration of an initial 32 °C and a subsequent 20 °C storage treatment on the performance of greenhouse-forced Ideal iris was investigated. Bulbs from several size categories and from several harvest dates were used with the goal of finding an optimal set of postharvest storage conditions for early forcing. Flowering percentage increased and the length of time required for glasshouse forcing decreased with longer storage (up to 5 wk) at 32 °C. With increasing duration of storage at 20 °C (up to 6 wk) the time required for glasshouse forcing decreased, whereas flowering percentage was influenced only slightly. A near optimal combination for early forcing of 10–11 cm circumference bulbs harvested after 1 Aug., was 4 wk of storage at 32 °C followed by 2 wk at 20 °C and 6 wk at 10 °C. The Dutch treatment for early forcing was unsatisfactory for use with Washington-grown bulbs.This publication has 1 reference indexed in Scilit:
- Relationships between Bulb Size, Apex Size and Flowering in Bulbous Iris cv. IdealPhysiologia Plantarum, 1979