Click on “Download PDF” for the PDF version or on the title for the HTML version.

If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.

The Leaf Growth Model and Influencing Factors in Phalaenopsis

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  2011 Louisville, Kentucky, August 7-10, 2011  1110454.(doi:10.13031/2013.37190)
Authors:   Chiachung Chen
Keywords:   Growth equation; nonlinear regression; Phalaenopsis

In order to evaluate the factors affecting the growth characteristics of Phalaenopsis leaves, the leaf-length growth patterns of two Phalaenopsis varieties, the red-flower Phalaenopsis clones LB9506 and LB9508, were measured under different environment conditions, day temperature and light intensity, and fertilizer rates. The fitting-agreement of three nonlinear growth equations was compared for evaluating leaf-length data for the two varieties. The parameters of the adequate equation then were further studied. The results indicated that the logistic equation was the best equation for describing the relationship between leaf-length and culture days. The parameters of this equation could be interpreted biologically. Environmental conditions and fertilizer rates had a significant effect on the maximal leaf-length for the two varieties. The growth rate of one variety, LB9506, was influenced significantly by day temperature and light intensity. However, the growth rate of other variety. LB9508, was not affected. The plant growth data were fitted with the nonlinear growth equations and then the parameters were analyzed. This method was useful in studying the factors affecting the Phalaenopsis leaf growth characteristics.

(Download PDF)    (Export to EndNotes)