begonia {repolr}

Begonia Pot Plant Quality Scores

Description

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 Quality scores were originally made on an ordinal scale from 1 to 10 (highest quality).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.

Usage

data(begonia)

Format

A data frame with 720 observations on the following variables.

Pot

pot plant identifier; 1 to 144.

Plot

location in growing compartment; 1 to 48.

Week

week number in simulated shelf-life; 1 to 5.

Temp

temperature in compartment; 16C or 21C.

Light

light level in compartment; High or Low.

Chain

transport chain; Cold, Comm (commercial) or Optm (optimum).

Irrig

irrigation in compartment; Cont (control) or Fluct (fluctuating).

Variety

variety; Balli or Batik.

Qual

quality score; 1 to 8.

FDrop

count of dropped flowers.

CBDrop

count of dropped coloured buds.

GBDrop

count of dropped green buds.

FDam

count of damaged flowers.

FSing

count of single flowers.

FDoub

count of double flowers.

LYell

count of yellow leaves.

Source

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.

Examples

data(begonia)
head(begonia)