Daily Light Integral, Prevernalization Photoperiod, and Vernalization Temperature and Duration Control Flowering of Easter Cactus

Rohwer, Charles; Heins, Royal D.

doi:10.21273/hortsci.42.7.1596

Cited by 8 publications

(5 citation statements)

References 21 publications

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“…The authors divided the flowering responses of regal geraniums into three categories: 1) DLI responsive, i.e., increasing DLI decreases time to flower, 2) time-responsive (which are also affected by DLI), and 3) nonresponsive to DLI, time, or both, i.e., require vernalization temperatures <15.5°C. Rohwer and Heins (2007) Herbaceous perennials. In a study on yarrow (Achillea millefolium), gaura (Gaura lindheimeri), and lavender (Lavendula angustifolia), DLI treatments ranging from 5 to 20 mol • m -2 • d -1 had little effect on timing of flowering.…”

Section: Discussionmentioning

confidence: 99%

Daily Light Integral: A Research Review and High-resolution Maps of the United States

Faust

Logan

2018

horts

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The National Renewable Energy Laboratory developed the National Solar Radiation Database to provide accessible solar radiation data to the research community for various uses. Previously, we created a series of monthly daily light integral (DLI) maps to provide a tool for horticulturists to estimate the potential growth and flowering responses for various plants throughout the year. The original DLI maps were based on solar radiation data from 239 sites recorded from 1961 to 1990. The DLI maps presented in this article were created from an updated database that included data from 1998 to 2009. This database provides higher resolution data modeled from satellite images of cloud cover. The data are presented in pixels with each pixel representing 100 km2 of land across the lower 48 United States and Hawaii, whereas the Alaska data are 1600 km2 pixels. The database provided global horizontal irradiance data that were converted to DLI (mol·m−2·d−1) using the conversion factor of 0.007265 mol (400–700 nm)·Wh−1 (400–2700 nm), which assumes that 45% of the solar radiation is in the photosynthetically active radiation (PAR, 400–700 nm) region and 4.48 μmol·J−1 is the conversion from radiometric to quantum units. The updated DLI maps provide more geographically precise data reflecting recent weather patterns. We present a comprehensive review of recent research exploring the growth and flowering responses of horticultural crops to DLI.

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Section: Discussionmentioning

confidence: 99%

Daily Light Integral: A Research Review and High-resolution Maps of the United States

Faust

Logan

2018

horts

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“…Since most species have not been tested for cold adaptations, absence of data does not necessarily indicate absence of traits. However, since cold climates arose after major radiations in seed plants, presence data (based on Krug, 1991; De la Rosa et al, 2000; Kawamata et al, 2002; Wilson et al, 2002; Karlson et al, 2004; Streck and Schuh, 2005; Lopez and Runkle, 2006; Fausey and Cameron, 2007; Kalberer et al, 2007; Mewes and Pank, 2007; Rohwer and Heins, 2007; Svendsen et al, 2007; Padhye and Cameron, 2008, 2009; Pietsch et al, 2009; Zlesak and Anderson, 2009; Biasi et al, 2010; Byard et al, 2010; Ghelardini et al, 2010; Kaymak and Guvenc, 2010; Kubota et al, 2010; Lenahan et al, 2010; Rantasen and Palonen, 2010; Caffarra et al, 2011; Cave et al, 2011; Charrier et al, 2011; Dogramaci et al, 2011; Lin et al, 2011; Adhikari et al, 2012; Andreini et al, 2012; Bilavcik et al, 2012; Diaz-Riquelme et al, 2012; Nishitani et al, 2012; Sanchez-Perez et al, 2012; Whitman and Runkle, 2012; Alessandro et al, 2013; Guzy-Wrobelska et al, 2013; Jones et al, 2013; Mojtahedi et al, 2013) indicates multiple origins of cold adaptive traits across the phylogeny.…”

Section: Phenotypic Correlations and The Phylogenetic Distribution Ofmentioning

confidence: 99%

Adaptation to seasonality and the winter freeze

Preston¹,

Sandve²

2013

Front. Plant Sci.

126

136

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Flowering plants initially diversified during the Mesozoic era at least 140 million years ago in regions of the world where temperate seasonal environments were not encountered. Since then several cooling events resulted in the contraction of warm and wet environments and the establishment of novel temperate zones in both hemispheres. In response, less than half of modern angiosperm families have members that evolved specific adaptations to cold seasonal climates, including cold acclimation, freezing tolerance, endodormancy, and vernalization responsiveness. Despite compelling evidence for multiple independent origins, the level of genetic constraint on the evolution of adaptations to seasonal cold is not well understood. However, the recent increase in molecular genetic studies examining the response of model and crop species to seasonal cold offers new insight into the evolutionary lability of these traits. This insight has major implications for our understanding of complex trait evolution, and the potential role of local adaptation in response to past and future climate change. In this review, we discuss the biochemical, morphological, and developmental basis of adaptations to seasonal cold, and synthesize recent literature on the genetic basis of these traits in a phylogenomic context. We find evidence for multiple genetic links between distinct physiological responses to cold, possibly reinforcing the coordinated expression of these traits. Furthermore, repeated recruitment of the same or similar ancestral pathways suggests that land plants might be somewhat pre-adapted to dealing with temperature stress, perhaps making inducible cold traits relatively easy to evolve.

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“…Numerous studies have shown the importance of providing inductive photoperiods to increase the flowering percentage in ornamental crops (Currey and Erwin, 2010;Karlsson and Werner, 2002;Mattson and Erwin, 2003;Rohwer and Heins, 2007;Runkle et al, 1999;Warner, 2010). For example, Currey and Erwin (2010) reported that Kalanchoe spp.…”

Section: Discussionmentioning

confidence: 99%

“…(Kalanchoe glaucescens, Kalanchoe manginii, and Kalanchoe uniflora) was 12 h, whereas shorter periods resulted in plants flowering in less time and with fewer nodes below the terminal inflorescence as well as increased flower number. Time to flower and number of nodes below the first open flower are reduced when plants are grown under the appropriate photoperiod, which is species-specific (Currey and Erwin, 2010; Karlsson and Werner, 2002;Mattson and Erwin, 2003;Rohwer and Heins, 2007;Warner, 2010).…”

mentioning

confidence: 99%

Photoperiod and Temperature Influence Flowering Responses and Morphology of Tecoma stans

Torres¹,

López²

2011

horts

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Tecoma stans (L. Juss. Kunth) ‘Mayan Gold’ is a tropical flowering plant that was selected as a potential new greenhouse crop for its physical appearance and drought and heat tolerance. The objective of this study was to quantify how temperature during the finishing stage and photoperiod during propagation and finishing stages influence growth, flowering, and quality. In Expt. 1, plants were propagated from seed under four photoperiods (9, 12, 14, or 16 h) for 35 days. Under long-day (LD) photoperiods (14 h or greater), seedlings were 3.0 to 3.7 cm taller than those propagated under 9-h photoperiods. During the finishing stage, days to first open flower, shoot dry mass, and number of nodes below the terminal inflorescence were reduced when plants were grown under LD photoperiods. In addition, number of open flowers and branches increased under LD photoperiods. Few plants developed visible buds when grown under short-day (SD) photoperiods (12 h or less). In Expt. 2, plants were forced at average daily temperatures of 19, 20, or 22 °C after transplant. Time to first open flower was reduced by 7 days as temperature increased. Inversely, number of visible buds increased by 57 as temperature increased from 19 to 22 °C. Under the experimental conditions tested, the most rapid, complete, and uniform flowering of Tecoma occurred when plants were propagated and finished under LD photoperiods and forced at 22 °C.

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Daily Light Integral, Prevernalization Photoperiod, and Vernalization Temperature and Duration Control Flowering of Easter Cactus

Cited by 8 publications

References 21 publications

Daily Light Integral: A Research Review and High-resolution Maps of the United States

Daily Light Integral: A Research Review and High-resolution Maps of the United States

Adaptation to seasonality and the winter freeze

Photoperiod and Temperature Influence Flowering Responses and Morphology of Tecoma stans

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