Effects of Different Shading Treatments on the Photosynthetic Properties of 4 Kinds of Ophiopogon japonicus
With Liriope spicata, L. graminifolia, L. muscari var.variegata and L.spicata var.prolifera as experimental material, the effects of different shading degrees on the photosynthetic properties of 4 kinds of Ophiopogon japonicus have been studied after 90 d of treatment with dif-ferent shading levels, in order to provide theoretical basis for selecting suitable Ophiopogon japonicus for different lighting environments in gar-dens.The results showed that proper shading could promote the synthesis of photosynthetic pigments.The chlorophyll content of L. spicata and L. graminifolia were the maximum under 25％ shading, and the contents were 2.38 and 2.10 mg/g respectively. The chlorophyll content of L. muscari var. variegata and L.spicata var. prolifera were the maximum under 50％ shading, and the contents were 1.22 and 1.81 mg/g, respec-tively. The maximum net photosynthetic rate of L. spicata was 11.13μmol/(m2·s) under 25％ shading.The maximum net photosynthetic rate of L. graminifolia, L. muscari var. Variegata and L.spicata var. prolifera were 6.15, 6.82 and 8.01μmol/(m2·s) under 50％ shading respective-ly. All factors considered, the optimal shading degree of Liriope spicata was 25％ shading.The optimal shading degree of L.graminifolia was be-tween 25％-50％ shading. The optimal shading degree of L. muscari var.variegata and L.spicata var.prolifera were 50％ shading.
万方数据
维普
