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calla lilies are reported to be a day-neutral plant ( Naor et al., 2005 ), in both the spring and the fall, most of the plants flowered when the daylength was 11 to 12 h. These daylength conditions were encountered nearer the beginning of the experiment

Most plants can be classified into one of three categories according to their photoperiodic responses: LDPs, short-day plants (SDPs), and day-neutral plants ( Thomas and Vince-Prue, 1997 ). Flowering of LDPs is promoted when the night length is

establish a rapid-cycling protocol as well as define a physiological baseline for later genetic studies or evaluation of transgene effects. The Hawaii-4 genotype has been described as a day-neutral plant, producing flowers under all photoperiods ( Oosumi et

-Assal et al., 2003 ). Most CRY2 mutants were developed in photoperiodic (e.g., Arabidopsis ) species ( Lin, 2000 ); therefore, it is not known whether CRY2 also influences flowering in day-neutral plants such as impatiens. Edema or intumescences have

, in the present study, photoperiod is more important than light spectra for flowering of this campanula species, although it is listed as a day-neutral plant rather than a LDP ( Whitman and Runkle, 2017 ). Despite no visible flower buds on plants in

response of B radiation. Not surprisingly, we observed reductions in height of vegetable transplants grown under B 25 R 95 SL that did not contain FR and/or G radiation ( Fig. 2D–F ). Considering all three species are categorized as day-neutral plants, and

-neutral strawberry growers located where early establishment is essential for good first-year production. Establishing plants in the fall could provide day-neutral plants with an earlier start on fruiting the following year, and perhaps higher total yield. Although