Begonia pot plant quality scores (for 2 varieties and 3 transport chains), during 5 weeks in simulated shelf-life conditions (temperature, light and irrigation). Quality scores were originally made on an ordinal scale from 1 to 10 (highest quality). However, only categories 2 to 9 were used, so these were re-coded to scale from 1 to 8. In addition to overall quality scores, a range of plant physiological characteristics were also observed.
A data frame with 720 observations on the following variables.
pot plant identifier; 1 to 144.
location in growing compartment; 1 to 48.
week number in simulated shelf-life; 1 to 5.
temperature in compartment;
light level in compartment;
Comm (commercial) or
irrigation in compartment;
Cont (control) or
quality score; 1 to 8.
count of dropped flowers.
count of dropped coloured buds.
count of dropped green buds.
count of damaged flowers.
count of single flowers.
count of double flowers.
count of yellow leaves.
Parsons NR, Edmondson RN, Gilmour SG. A generalized estimating equation method for fitting autocorrelated ordinal score data with an application in horticultural research. Journal of the Royal Statistical Society C 2006; 55:507-524.