R: Rice resistance to bloodworms (univariate form)

rice {asreml} | R Documentation

## Rice resistance to bloodworms (univariate form)

### Description

An investigation of the tolerance of rice varieties to attack by the larvae of bloodworms. The experiment commenced with the transplanting of rice seedlings into trays. Each tray contained a total of 32 seedlings and the trays were paired so that a control tray (no bloodworms) and a treated tray (bloodworms added) were grown in a controlled environment room for the duration of the experiment. After this, rice plants were carefully extracted, the root system washed and root area determined for the tray using an image analysis system. Two pairs of trays, each pair corresponding to a different variety, were included in each run. A new batch of bloodworm larvae was used for each run. A total of 44 varieties was investigated with 3 replicates of each. The variety concurrence was such that: 8 varieties occurred with only one other variety, 22 with two other varieties and the remaining 14 with three different varieties.

### Usage

    rice

### Format

A data frame with 6 columns and 264 rows:

- Pair: Pair ID, factor with 132 levels

- rootwt: Root weight

- Run: Run, factor with 66 levels

- sqrtroot: Square root of `rootwt`

- Tmt: Treatment, factor with 2 levels (Control and Exposed)

- Variety: Variety name, factor with 44 levels

[Package asreml version 4.2.0.480 Index]