Responses of Alstroemeria ‘Regina’ to temperature treatments prior to flower-inducing temperatures

Healy, Will; Wilkins, H. F.

doi:10.1016/0304-4238(82)90120-0

Cited by 13 publications

(14 citation statements)

References 9 publications

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“…Wilkins et al (1980) also reported that the optimum temperature for growth of storage roots was at a low temperature of 15C and that, at 20 and 25C, root growth was fibrous with only a few enlarged storage roots, possibly due to high respiration rates. It has been proposed (Healy and Wilkins, 1982b;Wilkins et al, 1980) that specific plant growth substances such as gibberillins may begin to accumulate in the plants and become conjugated with the stored C. Once a critical pool of metabolites and growth regulators has accumulated, flowering can occur. Future experiments must be directed at evaluating specifically how root zone C status controls flowering in a variety of greenhouse conditions.…”

Section: Discussionmentioning

confidence: 99%

“…Alstroemeria is an important greenhouse flower crop because of consumer interest, excellent vase life, high wholesale value, high productivity in greenhouses, and low energy requirements for production during winter (Blom and Piott, 1990;Healy and Wilkins, 1982b). Research on Alstroemeria has focused on promoting earlier winter and spring flowering (Healy and Wilkins, 1986a;Healy et al, 1982;Heins and Wilkins, 1976;Lin and Molnar, 1983) and extending harvest during warm growing conditions such as those experienced in the summer (Blom and Piott, 1990;Bridgen and Bartok, 1990;Lin, 1984Lin, , 1985.…”

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confidence: 99%

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Net Carbon Dioxide Exchange Rates and Predicted Growth Patterns in Alstroemeria `Jacqueline' at Varying Irradiances, Carbon Dioxide Concentrations, and Air Temperatures

Leonardos¹,

Tsujita²,

Grodzinski³

1994

jashs

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The influence of irradiance, CO2 concentration, and air temperature on leaf and whole-plant net C exchange rate (NCER) of Alstroemeria `Jacqueline' was studied. At ambient CO2, leaf net photosynthesis was maximum at irradiances above 600 μmol·m-2·s-1 photosynthetically active radiation (PAR), while whole-plant NCER required 1200 μmol·m-2·s-1 PAR to be saturated. Leaf and whole-plant NCERs were doubled under CO2 enrichment of 1500 to 2000 μl CO2/liter. Leaf and whole-plant NCERs declined as temperature increased from 20 to 35C. Whereas the optimum temperature range for leaf net photosynthesis was 17 to 23C, whole-plant NCER, even at high light and high CO2, declined above 12C. Dark respiration of leaves and whole plants increased with a Q10 of ≈2 at 15 to 35C. In an analysis of day effects, irradiance, CO2 concentration, and temperature contributed 58%, 23%, and 14%, respectively, to the total variation in NCER explained by a second-order polynomial model (R2 = 0.85). Interactions among the factors accounted for 4% of the variation in day C assimilation. The potential whole-plant growth rates during varying greenhouse day and night temperature regimes were predicted for short- and long-day scenarios. The data are discussed with the view of designing experiments to test the importance of C gain in supporting flowering and high yield during routine harvest of Alstroemeria plants under commercial greenhouse conditions.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Net Carbon Dioxide Exchange Rates and Predicted Growth Patterns in Alstroemeria `Jacqueline' at Varying Irradiances, Carbon Dioxide Concentrations, and Air Temperatures

Leonardos¹,

Tsujita²,

Grodzinski³

1994

jashs

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“…A decrease in days to flower of Alstroemeria 'Regina' follow ing a 5°C treatment for 4 to 6 weeks was demonstrated by our re search group (5,22). Vonk Noordegraaf (19) presented data showing that total shoot production was stimulated by air temper atures above 13°, but percentage of shoots that flowered de creased.…”

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confidence: 55%

The Interaction of Temperature on Flowering of Alstroemeria ‘Regina’1

Healy

Wilkins

1982

J. Amer. Soc. Hort. Sci.

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When Alstroemeria ‘Regina’ plants were programmed to flower after 6 or 8 weeks at 5°C treatments, flowering was hastened by forcing plants at 18° vs. 13° greenhouse night air temperature. However, the 18° forcing temperature reduced flower production, flowers per shoot and shoot grade when compared to 13° forcing temperatures. Due to the decrease in flower production observed at 18° forcing temperature, a 13° temperature is recommended. When plants were grown for 16 weeks at 13°, an inductive temperature, or for 16 weeks at 21°, a non-inductive temperature, prior to the 5° inductive treatments, the 13° pretreatment without a 5° treatment was as effective as 8 weeks at 5° following the initial 21° pretreatment when forced at 18°. Thus, the cold requirement can be fulfilled either at 5° for a short period of time (6 to 8 weeks) or at 13° over an extended time span (16 weeks). Total shoot production during the flowering span decreased as the duration of the 5° treatment increased.

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“…Different cut flowers respond in different ways to the duration of cool storage and to temperature. For instance, carnation buds can be stored for 16-24 weeks at 0-1°C and Alstroemeria for 5 days at 1.7°C and 30 days at 0°C (Halevy & Mayak 1981;Healy & Wilkins 1986;Nowak & Rudnicki 1990;Mengüç & Zencirkiran 1996).…”

Section: H02067; Published 8 August 2003 Received 4 September 2002; Amentioning

confidence: 99%

Cold storage ofAlstroemeria pelegrina’ Ostara‘

Zencirkiran¹,

Mengüç

2003

New Zealand Journal of Crop and Horticultural Science

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In this study, cut flowers of Alstroemeria 'Ostara' were harvested at three harvest maturities (tight bud, first bud showing colour, fully open flowers) and stored at 0-0.5°C for 0, 15, 30, and 45 days. The flowers harvested at different harvest maturities responded differently according to storage duration. The flowers at different harvest maturities could be stored for 45 days, however, the stems that were harvested with fully open flowers had a shorter vase life after 45 days of storage (5 days) compared to flowers harvested in bud or at a stage when the buds were first showing colour (9 days).

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Responses of Alstroemeria ‘Regina’ to temperature treatments prior to flower-inducing temperatures

Cited by 13 publications

References 9 publications

Net Carbon Dioxide Exchange Rates and Predicted Growth Patterns in Alstroemeria `Jacqueline' at Varying Irradiances, Carbon Dioxide Concentrations, and Air Temperatures

Net Carbon Dioxide Exchange Rates and Predicted Growth Patterns in Alstroemeria `Jacqueline' at Varying Irradiances, Carbon Dioxide Concentrations, and Air Temperatures

The Interaction of Temperature on Flowering of Alstroemeria ‘Regina’1

Cold storage ofAlstroemeria pelegrina’ Ostara‘

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