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Stock and snapdragon as influenced by greenhouse covering materials and supplemental light

Dansereau, B. (Laval University, Quebec, Canada.) ; Zhang, Y ; Gagnon, S ; Xu, H.L

HortScience, 1998-07, Vol.33 (4), p.668-671 [Periódico revisado por pares]

Alexandria, VA: American Society for Horticultural Science

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Título:
Stock and snapdragon as influenced by greenhouse covering materials and supplemental light
Autor: Dansereau, B. (Laval University, Quebec, Canada.) ; Zhang, Y ; Gagnon, S ; Xu, H.L
Assuntos: Agronomy. Soil science and plant productions ; ANTIRRHINUM ; ANTIRRHINUM MAJUS ; Biological and medical sciences ; CALIDAD ; CULTIVO PROTEGIDO ; CULTURE SOUS ABRI ; FILM PLASTIQUE ; FLORACION ; FLORAISON ; FLOWERING ; FOTOSINTESIS ; Fundamental and applied biological sciences. Psychology ; General agronomy. Plant production ; GLASS ; GREENHOUSES ; GROWTH RATE ; HERBACEOUS ORNAMENTALS ; INDICE DE CRECIMIENTO ; INVERNADEROS ; LIGHT ; LIGHT INTENSITY ; LIGHT REGIMES ; LUMIERE ; LUZ ; MATTHIOLA ; MATTHIOLA INCANA ; PELICULA PLASTICA ; PHOTOSYNTHESE ; PHOTOSYNTHESIS ; PLANTAS HERBACEAS ORNAMENTALES ; PLANTE ORNEMENTALE HERBACEE ; PLASTIC FILM ; POLIETILENO ; POLYETHYLENE ; PROTECTED CULTIVATION ; QUALITE ; QUALITY ; REGIME LUMINEUX ; REGIMENES DE LUZ ; SERRE ; Soilless cultures. Protected cultivation ; SUPPLEMENTARY LIGHT ; TAUX DE CROISSANCE ; VERRE ; VIDRIO
É parte de: HortScience, 1998-07, Vol.33 (4), p.668-671
Notas: 1999002892
F01
Descrição: We examined effects of single-layer glass and double-layer antifog polyethylene films on growth and flowering of stock (Matthiola incana L.) and snapdragon (Antirrhinum majalis L.) in a 3-year period. Stock produced more buds/spike with shorter but thicker stems under single-layer glass and under antifog 3-year polyethylene, and showed higher photosynthetic capacity (P(C)) under single-layer glass than under other covers regardless of light regimes. Similarly, growth and flowering of snapdragon were significantly better under single-layer glass than in polyethylene houses. A supplemental light of 60 micromole(.)m-2(.)s-1 accelerated flowering by 20 to 25 days, improved flower quality, and eliminated differences in plant growth and quality of snapdragon between covering treatments. The P(C) of stock was lower under all polyethylene covers than under single-layer glass. Among the three antifog polyethylene films, a slightly higher P(C) was measured for plants under antifog 3-year polyethylene. However, there was no difference among covering treatments in the net photosynthetic rate (P(N)) at low light level (canopy level). Supplemental lighting reduced P(C) of stock leaves, especially under single-layer glass, and diminished differences in P(C) among covering treatments. Dry mass was more influenced by larger leaf area caused by higher leaf temperature than by P(N). Overall, antifog 3-year polyethylene was good covering material when both plant quality and energy saving were considered
Editor: Alexandria, VA: American Society for Horticultural Science
Idioma: Inglês

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Stock and snapdragon as influenced by greenhouse covering materials and supplemental light

Dansereau, B. (Laval University, Quebec, Canada.) ; Zhang, Y ; Gagnon, S ; Xu, H.L

Alexandria, VA: American Society for Horticultural Science

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