Photosynthetica 2003, 41(3):443-447 | DOI: 10.1023/B:PHOT.0000015469.80667.44

Variation in Photosynthetic Characteristics and Leaf Area Contributes to Spathiphyllum Cultivar Differences in Biomass Production

Qibing Wang1, Jianjun Chen1
1 IFAS, Mid-Florida Research and Education Center and Department of Environmental Horticulture, University of Florida, Apopka, USA

Three genetically related Spathiphyllum cultivars, Claudia, Double Take, and Petite with similar initial sizes and biomass, were grown in a shaded greenhouse and fertilized with a constant supply of nitrogen at 200 g m-3 using an ebb-and-flow fertigation system. Seven months later, Claudia and Double Take had plant sizes and biomasses significantly greater than Petite. Stomatal conductances of Claudia and Double Take were 30 % greater, thus net photosynthetic rates (PN) were significantly higher than in Petite. In addition, the leaf areas (LA) of Claudia and Double Take were 60 % larger than of Petite. Since PN was expressed per leaf surface area, the greater the LA was, the more CO2 was fixed. Thus, the differences in plant size and biomass production of Claudia and Double Take compared to Petite are attributed to high PN and increased LA.

Additional key words: biomass; chlorophyll content; intercellular CO2 concentration; leaf area and thickness; net photosynthetic rate; ornamental foliage plants; peace lily; stomatal conductance; water-use efficiency

Published: September 1, 2003  Show citation

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Wang, Q., & Chen, J. (2003). Variation in Photosynthetic Characteristics and Leaf Area Contributes to Spathiphyllum Cultivar Differences in Biomass Production. Photosynthetica, 41(3), 443-447. doi: 10.1023/B:PHOT.0000015469.80667.44
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