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Yi-Lu Jiang, Yuan-Yin Liao, Tzong-Shyan Lin, Ching-Lung Lee, Chung-Ruey Yen, and Wen-Ju Yang

the next fall ( Jiang et al., 2011 ). Regardless of daylength, extreme temperatures in summer may restrict the flowering of pitaya ( Nerd et al., 2002 ). Light intensity may affect the nutritional status of shoots and thus influence the number of

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Mary Hockenberry Meyer and Diane M. Narem

intermittent mist (5 s mist every 8 min) and 600-W high-pressure sodium lighting (Gavita, Vancouver, WA; GE Lighting, Cleveland, OH) with a 16-h daylength. For treatment 2, germination mix cold, after seed placement, the trays were lightly covered with clear, 6

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Katrine Heinsvig Kjaer and Carl-Otto Ottosen

photosynthesis and forecasted solar irradiance; thus, the light breaks were not identical between nights. The overall result was a light pattern that was very irregular. Plants are adapted to sense daylength to schedule developmental events to coincide with

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Karen K. Tanino and Ruojing Wang

have a distinct cultivar-dependent response. Depending on the cultivar, Darrow (1936) and Heide (1977) found higher flower bud numbers with progressively lower temperature under increasingly longer daylengths. In most cultivars, the lower field

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Fumiko Ishizuna and Nobuhiro Tsutsumi

Node 14 of Plant 6 in Table 1 did not develop further ( Fig. 3C ), whereas the flower bud on Node 14 of Plant 5 reached blooming ( Table 1 ). Flower bud formation of sacred lotus is independent of daylength. During the growing season from spring to

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Andrea Stuemky and Mark E. Uchanski

cultivars of strawberry only flower and bear fruit during specific times of the year as a result of corresponding daylength. This phenomenon is referred to as the photoperiod response. However, certain strawberry cultivars produce flowers and fruit

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M. L. Albrecht and D. M. Crockett

Heuchera cultivars were studied to examine the influence of photoperiod and refrigerated storage on vegetative and reproductive growth. As daylength increased from 9 to 15 hours, using day extension, petiole length and leaf area increased. Daylength during the forcing period appears to have minimal influence on reproductive growth. Forcing under 15-m daylength reduced the time to inflorescence emergence and delayed the time to anthesis of first floret and inflorescence maturity in comparison to natural daylengths or short days. Cold storage (4°C) for 14 weeks resulted in quicker inflorescence emergence than no storage or 10 weeks of storage.

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Michael J. Willett, Lisa Neven, and Charles E. Miller

is paralleled by diapause in the CM population, triggered by shorter daylengths in late summer ( Riedl, 1983 ). CM diapause is perhaps one of the most studied in the Torticidae. Dickson (1949) first demonstrated that larvae entered “a state of

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Timothy Coolong and Mark A. Williams

Onions are grown throughout the United States using multiple production systems in a range of climates. Onions are typically divided into short-day, intermediate-day, and long-day types; with bulbing occurring in response to daylengths greater than

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Gordon J. Lightbourn, John R. Stommel, and Robert J. Griesbach

significant effect on pigmentation, further experiments were conducted at 23 °C day and 18 °C night for improved plant growth and health. Anthocyanin pigmentation was evaluated under four different light conditions: short daylength, low light intensity (10 h