Search Results

You are looking at 31 - 40 of 73 items for :

  • "light quantity" x
  • Refine by Access: All x
Clear All
Free access

Sonali R. Padhye and Arthur C. Cameron

regulation of flowering of Coreopsis grandiflora ‘Sunray’ by vernalization, photoperiod and light quantity Mich. State Univ East Lansing PhD Diss. Shedron, K.G. Weiler, T.C. 1982 Regulation of growth and flowering in

Free access

Kelly M. Stanton, Sally S. Weeks, Michael N. Dana, and Michael V. Mickelbart

Light quantity and timing are often variable in urban and suburban landscapes ( Kjelgren, 1995 ). Buildings often cast shadows to the north (in the northern hemisphere) and east and west sides of buildings provide only morning or afternoon sun

Free access

Jiffinvir Khosa, Robyn Lee, Srishti Joshi, Martin Shaw, John McCallum, and Richard Macknight

therefore especially important when studying different growth phases of onion. Control of light quantity and quality are critical to manage onion growth and development in controlled environments ( Brewster, 2008 ). Under controlled environments, fluorescent

Full access

Zhengnan Yan, Dongxian He, Genhua Niu, Qing Zhou, and Yinghua Qu

DLI, which may indicate that light quantity had bigger effects than light quality in lettuce production. This was probably due to the light amounts received by leaves and there were no remarkable differences found in P n among treatments at lower DLIs

Open access

Humberto Aguirre-Becerra, Juan Fernando García-Trejo, Cristina Vázquez-Hernández, Aurora Mariana Alvarado, Ana Angélica Feregrino-Pérez, Luis Miguel Contreras-Medina, and Ramón G. Guevara-Gonzalez

a 30-minute interval simulating sunset and sunrise. The light quantity provided by the LEDs was calculated using Eq. [1] and Eq. [2] , where the photon energy (E photon ) was calculated according to the light dominant wavelength (λ) and

Free access

Eva María Almansa, Antonio Espín, Rosa María Chica, and María Teresa Lao

received. A significant correlation between auxin concentration and TDW produced has been found. T 2 characterized for the lowest PAR :NIR, B:R, B:FR, and R:FR provides adequate light quantity and quality for all cultivars within the parameters RDW, TDW

Free access

Veronica L. Justen, Jerry D. Cohen, Gary Gardner, and Vincent A. Fritz

based on their spectral properties ( Fig. 1 ). Light quantities reflected by mulches were measured using an Apogee Model Spec-ultraviolet/photosynthetically active radiation spectroradiometer with a reflectance probe attachment (Apogee Instruments, Inc

Open access

Juan Carlos Díaz-Pérez, Kelly St. John, Mohammad Yamin Kabir, J. Alberto Alvarado-Chávez, Ania M. Cutiño-Jiménez, Jesús Bautista, Gunawati Gunawan, and Savithri U. Nambeesan

transpirational properties of the fruit epidermis were not influenced by the colored nets. These results suggest that light quantity rather than light quality (as modified by colored shade nets) influenced the rate of fruit water loss in bell pepper. Fruit

Open access

Eric T. Wolske, Bruce E. Branham, and Kevin J. Wolz

systems: the overstory and the understory. In the understory, the greatest competition comes from changes in light quantity and light quality ( Malézieux et al., 2009 ). In natural ecosystems, the understory is inhabited by plants that are shade tolerant

Free access

Aparna Gazula, Matthew D. Kleinhenz, Joseph C. Scheerens, and Peter P. Ling

.L. 1990 Interaction between light quality and light quantity in the photoregulation of anthocyanin production Plant Physiol. 92 1191 1195 Mazza, G. Miniati, E. 1993 Anthocyanins in fruits, vegetables, and grains